Tappet Trouble

Ongoing battle with the Guzzi's tappets.

The L/H exh tappet was noisy and having worked out I'd not done them for
over a year thought it might be a good idea.

The Guzzi tappets are simple screw and locknut and all were within
tolerance except the L/H exh which felt very 'gritty' when I was winding
it out. Removing it I found a few turns of the thread damaged as well as
the nut.

Imagine my surprise when I discovered the M8 1.0 threaded locknut was
over £5 from Guzzi and the tappet adjuster itself was just shy of £10.
Fortunately the fine threaded nut was only 20p from Namricks round the
corner (it's a 13mm spanner rather than 11mm as was but the early models
had 13mm so isn't a problem). I still had to buy a replacement adjuster.

Problem is it goes out of adjustment very quickly (2 miles) and the
threads in the rocker itself feel sloppy.

Getting a replacement rocker is going to be tricky (even secondhand,
unless JB has one?) and Friday is the only day I can work on it and I'm
on the 06.25 ferry Saturday.

I'm thinking of Loctite - what say the panel?

--
Simon

sweller wrote:
> Ongoing battle with the Guzzi's tappets.
>
> The L/H exh tappet was noisy and having worked out I'd not done them for
> over a year thought it might be a good idea.
>
> The Guzzi tappets are simple screw and locknut and all were within
> tolerance except the L/H exh which felt very 'gritty' when I was winding
> it out. Removing it I found a few turns of the thread damaged as well as
> the nut.
>
> Imagine my surprise when I discovered the M8 1.0 threaded locknut was
> over £5 from Guzzi and the tappet adjuster itself was just shy of £10.
> Fortunately the fine threaded nut was only 20p from Namricks round the
> corner (it's a 13mm spanner rather than 11mm as was but the early models
> had 13mm so isn't a problem). I still had to buy a replacement adjuster.
>
> Problem is it goes out of adjustment very quickly (2 miles) and the
> threads in the rocker itself feel sloppy.
>
> Getting a replacement rocker is going to be tricky (even secondhand,
> unless JB has one?) and Friday is the only day I can work on it and I'm
> on the 06.25 ferry Saturday.
>
> I'm thinking of Loctite - what say the panel?

Drill out the duff threads, fill with chemical metal AKA JB Weld,
& tap to original thread size. YKIMS.

Let us know if it works, I've never tried it on such an application.

Having thought about it a bit more, couldn't you do the same thing
except fill the hole with brazing metal or just steel welding rod?

The adjusters and nuts for my ZG1000 are extremely hard, and are
supposed to be torqued to 18 ft-lbs, so hopefully the Namricks nut
is of similar spec to the original Guzzi one.

--
'01 SV650S '99 EX250-F13 '98 ZG1000-A13
OMF #7

"sweller" <sweller@mztech.fsnet.co.uk> wrote in message
news:xn0f8tmb61unigj000@news.individual.net...
> Ongoing battle with the Guzzi's tappets.
>
> The L/H exh tappet was noisy and having worked out I'd not done them for
> over a year thought it might be a good idea.
>
> The Guzzi tappets are simple screw and locknut and all were within
> tolerance except the L/H exh which felt very 'gritty' when I was winding
> it out. Removing it I found a few turns of the thread damaged as well as
> the nut.
>
> Imagine my surprise when I discovered the M8 1.0 threaded locknut was
> over £5 from Guzzi and the tappet adjuster itself was just shy of £10.
> Fortunately the fine threaded nut was only 20p from Namricks round the
> corner (it's a 13mm spanner rather than 11mm as was but the early models
> had 13mm so isn't a problem). I still had to buy a replacement adjuster.
>
> Problem is it goes out of adjustment very quickly (2 miles) and the
> threads in the rocker itself feel sloppy.
>
> Getting a replacement rocker is going to be tricky (even secondhand,
> unless JB has one?) and Friday is the only day I can work on it and I'm
> on the 06.25 ferry Saturday.
>
> I'm thinking of Loctite - what say the panel?

If you're eventually going to get a new rocker, use Loc-Tite's "Stud-loc"
and it'll never move again. You WILL have to buy a new rocker and adjuster
though or hit the parts with a gas axe to break the bond.

Nothing ELSE but Stud-loc will go even halfway to seeing it work for a
decent time period.

Thread-loc CERTAINLY won't, nor will Loc-tite 240 or 242. IIRC the number is
270 (ish) for Stud-loc

--
Beav

VN 750
Zed 1000
OMF# 19

Mark Olson wrote:

> Drill out the duff threads, fill with chemical metal AKA JB Weld,
> & tap to original thread size. YKIMS.
>
> Let us know if it works, I've never tried it on such an application.

I'm unhappy to do such a bodge on stressed engine internals and the price
of a fine pitch tap probably won't be too different to a new rocker.

> The adjusters and nuts for my ZG1000 are extremely hard, and are
> supposed to be torqued to 18 ft-lbs, so hopefully the Namricks nut
> is of similar spec to the original Guzzi one.

18 ft/lb is pretty much the standard torque for an M8 nut.

--
Simon

sweller <sweller@mztech.fsnet.co.uk> wrote:

> I'm thinking of Loctite - what say the panel?

Is there room to put a second nut on, to act as a locknut?

--
BMW K1100LT 750SS CB400F CD250 SL125
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
BOF#30 WUSS#5 The bells, the bells.....

sweller wrote:
> Mark Olson wrote:
>
>> Drill out the duff threads, fill with chemical metal AKA JB Weld,
>> & tap to original thread size. YKIMS.
>>
>> Let us know if it works, I've never tried it on such an application.
>
> I'm unhappy to do such a bodge on stressed engine internals and the price
> of a fine pitch tap probably won't be too different to a new rocker.
>
>
>> The adjusters and nuts for my ZG1000 are extremely hard, and are
>> supposed to be torqued to 18 ft-lbs, so hopefully the Namricks nut
>> is of similar spec to the original Guzzi one.
>
> 18 ft/lb is pretty much the standard torque for an M8 nut.

<south pacific mode>
Tappet, tappet, tappet, tappet torque
Torque about things you can't undo
<\spm>

--
Mike H

"sweller" <sweller@mztech.fsnet.co.uk> wrote in message
news:xn0f8tmb61unigj000@news.individual.net...
> Ongoing battle with the Guzzi's tappets.
>
> The L/H exh tappet was noisy and having worked out I'd not done them for
> over a year thought it might be a good idea.
>
> The Guzzi tappets are simple screw and locknut and all were within
> tolerance except the L/H exh which felt very 'gritty' when I was winding
> it out. Removing it I found a few turns of the thread damaged as well as
> the nut.
>
> Imagine my surprise when I discovered the M8 1.0 threaded locknut was
> over £5 from Guzzi and the tappet adjuster itself was just shy of £10.
> Fortunately the fine threaded nut was only 20p from Namricks round the
> corner (it's a 13mm spanner rather than 11mm as was but the early models
> had 13mm so isn't a problem). I still had to buy a replacement adjuster.
>
> Problem is it goes out of adjustment very quickly (2 miles) and the
> threads in the rocker itself feel sloppy.
>
> Getting a replacement rocker is going to be tricky (even secondhand,
> unless JB has one?) and Friday is the only day I can work on it and I'm
> on the 06.25 ferry Saturday.
>
I've got one. Email with a postal addy and I'll get it down to the post
office today.
jmbyrne_AT_greenyonder.co.uk (changing the colour to blue obviously)

JB

In message <xn0f8tmb61unigj000@news.individual.net>, sweller
<sweller@mztech.fsnet.co.uk> writes
>Ongoing battle with the Guzzi's tappets.
>I'm thinking of Loctite - what say the panel?
>

Valve seats?
--
Gyp
Change to dotcom to reply

JB wrote:
> "sweller" <sweller@mztech.fsnet.co.uk> wrote in message
> news:xn0f8tmb61unigj000@news.individual.net...
>>
>> Getting a replacement rocker is going to be tricky (even secondhand,
>> unless JB has one?) and Friday is the only day I can work on it and
>> I'm on the 06.25 ferry Saturday.
>>
> I've got one. Email with a postal addy and I'll get it down to the
> post office today.
> jmbyrne_AT_greenyonder.co.uk (changing the colour to blue obviously)
>

Are there some splendid people here or what, eh?

--
Si - XV535

MikeH wrote:
> sweller wrote:
> >
> > 18 ft/lb is pretty much the standard torque for an M8 nut.
>
> <south pacific mode>
> Tappet, tappet, tappet, tappet torque
> Torque about things you can't undo
> <\spm>

I read your posts and sometimes have to really wonder what's occurring
inside your head.

--
Chris

CT wrote:
> MikeH wrote:
>> sweller wrote:
>>> 18 ft/lb is pretty much the standard torque for an M8 nut.
>> <south pacific mode>
>> Tappet, tappet, tappet, tappet torque
>> Torque about things you can't undo
>> <\spm>
>
> I read your posts and sometimes have to really wonder what's occurring
> inside your head.

*You* wonder?

Try being on this side of it.

--
Mike H

"sweller" <sweller@mztech.fsnet.co.uk> wrote in message
news:xn0f8u7s726px5i000@news.individual.net...
> Mark Olson wrote:
>
>> Drill out the duff threads, fill with chemical metal AKA JB Weld,
>> & tap to original thread size. YKIMS.
>>
>> Let us know if it works, I've never tried it on such an application.
>
> I'm unhappy to do such a bodge on stressed engine internals and the price
> of a fine pitch tap probably won't be too different to a new rocker.

It might well be worth having a chat with a local engineering firm, or maybe
a decent local bike-shop, about helicoiling.

Used it myself, in fact, I bought a kit not too far back as it really does
work. Helicoils are not happy about being unscrewed and screwed up again to
many times though, but for tappet adjusters I'd have thought it just the
jobby as you never really actually back the thread right out each time you
adjust.

JMH2PW.
--
Greybeard

FLHTCUI UK-07 Mk II
Trumpet Trophy 1200 new one coming soon!
Garmin Zumo 550, To get me home!

ukrm@foxtails[dot]co[dot]uk

On 18 Jul 2007 07:59:21 GMT, "CT" <me@christrollen.co.uk> wrote:

>MikeH wrote:
>> sweller wrote:
>> >
>> > 18 ft/lb is pretty much the standard torque for an M8 nut.
>>
>> <south pacific mode>
>> Tappet, tappet, tappet, tappet torque
>> Torque about things you can't undo
>> <\spm>
>
>I read your posts and sometimes have to really wonder what's occurring
>inside your head.

He's not right, is he.

Long may it continue.
--
Champ
I don't know, but I been told, you never slow down, you never get old
ZX10R | GPz750turbo | GSX-R600 (race)
neal at champ dot org dot uk

On 17 Jul 2007 22:17:41 GMT, "sweller" <sweller@mztech.fsnet.co.uk>
wrote:

>Imagine my surprise when I discovered the M8 1.0 threaded locknut was
>over £5 from Guzzi and the tappet adjuster itself was just shy of £10.

Try cam followers at over £25 each (I think that's inc. VAT). I
suddenly made an engineering decision that slightly pitted followers
didn't matter that much.

--
-Pip

"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message
news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com...
> On 17 Jul 2007 22:17:41 GMT, "sweller" <sweller@mztech.fsnet.co.uk>
> wrote:
>
>>Imagine my surprise when I discovered the M8 1.0 threaded locknut was
>>over £5 from Guzzi and the tappet adjuster itself was just shy of £10.
>
> Try cam followers at over £25 each (I think that's inc. VAT). I
> suddenly made an engineering decision that slightly pitted followers
> didn't matter that much.
>
And fitting a set of oversized followers is a **beeeetch**! If I _ever_ have
to do that reaming job again I quit. The sodding jig to hold the crankcase
aligned in the mill took me about 7 hours to build FFS.

JB

On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:

>
>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message
>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com.. .
>> Try cam followers at over £25 each (I think that's inc. VAT). I
>> suddenly made an engineering decision that slightly pitted followers
>> didn't matter that much.
>>
>And fitting a set of oversized followers is a **beeeetch**! If I _ever_ have
>to do that reaming job again I quit. The sodding jig to hold the crankcase
>aligned in the mill took me about 7 hours to build FFS.

Yep, I've found that I spend more time making up fixtrues than
actually doing the bodge^h job itself.

--
-Pip

Using the patented Mavis Beacon "Hunt&Peck" Technique, Pip Luscher
<pips.computer@spammers.foad.ntlworld.co.uk> typed
>On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:
>
>>
>>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message
>>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. ..
>>> Try cam followers at over £25 each (I think that's inc. VAT). I
>>> suddenly made an engineering decision that slightly pitted followers
>>> didn't matter that much.
>>>
>>And fitting a set of oversized followers is a **beeeetch**! If I _ever_ have
>>to do that reaming job again I quit. The sodding jig to hold the crankcase
>>aligned in the mill took me about 7 hours to build FFS.
>
>Yep, I've found that I spend more time making up fixtrues than
>actually doing the bodge^h job itself.

Oh yes.

And *every time* I get tempted into a short cut, I regret it. Large.

--
Wicked Uncle Nigel - "He's hopeless, but he's honest"

WS* GHPOTHUF#24 APOSTLE#14 DLC#1 COFF#20 BOTAFOT#150 HYPO#0(KoTL) IbW#41
SBS#39 OMF#6 Enfield 500 Curry House Racer "The Basmati Rice Burner",
Honda GL1000K2 (Falling apart) Kawasaki ZN1300 Voyager "Oh, Oh, It's so big"
Suzuki TS250 "The Africa Single" Honda ST1100 wiv trailer Norton 850 Commando

"Wicked Uncle Nigel" <wun@wicked-uncle-nigel.me.uk> wrote in message
news:yWqj2yDm+onGJA05@rcav8r.demon.co.uk...
> Using the patented Mavis Beacon "Hunt&Peck" Technique, Pip Luscher
> <pips.computer@spammers.foad.ntlworld.co.uk> typed
>>On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:
>>
>>>
>>>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in
>>>message
>>>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com ...
>>>> Try cam followers at over £25 each (I think that's inc. VAT). I
>>>> suddenly made an engineering decision that slightly pitted followers
>>>> didn't matter that much.
>>>>
>>>And fitting a set of oversized followers is a **beeeetch**! If I _ever_
>>>have
>>>to do that reaming job again I quit. The sodding jig to hold the
>>>crankcase
>>>aligned in the mill took me about 7 hours to build FFS.
>>
>>Yep, I've found that I spend more time making up fixtrues than
>>actually doing the bodge^h job itself.
>
> Oh yes.
>
> And *every time* I get tempted into a short cut, I regret it. Large.
>
Indeed. Usually at my own expense too.

JB

Using the patented Mavis Beacon "Hunt&Peck" Technique, JB
<JB@Nospam.co.uk> typed
>
>"Wicked Uncle Nigel" <wun@wicked-uncle-nigel.me.uk> wrote in message
>news:yWqj2yDm+onGJA05@rcav8r.demon.co.uk...
>> Using the patented Mavis Beacon "Hunt&Peck" Technique, Pip Luscher
>> <pips.computer@spammers.foad.ntlworld.co.uk> typed
>>>On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:
>>>
>>>>
>>>>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in
>>>>message
>>>>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.co m...
>>>>> Try cam followers at over £25 each (I think that's inc. VAT). I
>>>>> suddenly made an engineering decision that slightly pitted followers
>>>>> didn't matter that much.
>>>>>
>>>>And fitting a set of oversized followers is a **beeeetch**! If I _ever_
>>>>have
>>>>to do that reaming job again I quit. The sodding jig to hold the
>>>>crankcase
>>>>aligned in the mill took me about 7 hours to build FFS.
>>>
>>>Yep, I've found that I spend more time making up fixtrues than
>>>actually doing the bodge^h job itself.
>>
>> Oh yes.
>>
>> And *every time* I get tempted into a short cut, I regret it. Large.
>>
>Indeed. Usually at my own expense too.

*Always* at mine.

BTW, Monday might be tricky. I'll call you in the morning.

--
Wicked Uncle Nigel - "He's hopeless, but he's honest"

WS* GHPOTHUF#24 APOSTLE#14 DLC#1 COFF#20 BOTAFOT#150 HYPO#0(KoTL) IbW#41
SBS#39 OMF#6 Enfield 500 Curry House Racer "The Basmati Rice Burner",
Honda GL1000K2 (Falling apart) Kawasaki ZN1300 Voyager "Oh, Oh, It's so big"
Suzuki TS250 "The Africa Single" Honda ST1100 wiv trailer Norton 850 Commando

On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher
<pips.computer@spammers.foad.ntlworld.co.uk> wrote:

>On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:
>
>>
>>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message
>>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. ..
>>> Try cam followers at over £25 each (I think that's inc. VAT). I
>>> suddenly made an engineering decision that slightly pitted followers
>>> didn't matter that much.
>>>
>>And fitting a set of oversized followers is a **beeeetch**! If I _ever_ have
>>to do that reaming job again I quit. The sodding jig to hold the crankcase
^^^
>>aligned in the mill took me about 7 hours to build FFS.
>
>Yep, I've found that I spend more time making up fixtrues than
^^^^^^^^
What a wonderful typo.

--
Statto
Daytona 955i SE in black
GT750 in disrepair

Statto <statto.nospam@ukrm.net> wrote:

> On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher
> <pips.computer@spammers.foad.ntlworld.co.uk> wrote:
>
> >On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:
> >
> >>
> >>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message
> >>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. ..
> >>> Try cam followers at over £25 each (I think that's inc. VAT). I
> >>> suddenly made an engineering decision that slightly pitted followers
> >>> didn't matter that much.
> >>>
> >>And fitting a set of oversized followers is a **beeeetch**! If I _ever_ have
> >>to do that reaming job again I quit. The sodding jig to hold the crankcase
> ^^^
> >>aligned in the mill took me about 7 hours to build FFS.
> >
> >Yep, I've found that I spend more time making up fixtrues than
> ^^^^^^^^
> What a wonderful typo.

I've been whooshed here, I think.

--
BMW K1100LT 750SS CB400F CD250 SL125
GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3
BOF#30 WUSS#5 The bells, the bells.....

"The Older Gentleman" <chateau.murray.takethisout@dsl.pipex.com> wrote
in message
news:1i1hl3h.x5otlq7y9jc9N%chateau.murray.takethis out@dsl.pipex.com
> Statto <statto.nospam@ukrm.net> wrote:
>
>> On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher
>> <pips.computer@spammers.foad.ntlworld.co.uk> wrote:
>>
>>> On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:
>>>
>>>>
>>>> "Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote
>>>> in message news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com...
>>>>> Try cam followers at over £25 each (I think that's inc. VAT). I
>>>>> suddenly made an engineering decision that slightly pitted
>>>>> followers didn't matter that much.
>>>>>
>>>> And fitting a set of oversized followers is a **beeeetch**! If I
>>>> _ever_ have to do that reaming job again I quit. The sodding jig
>>>> to hold the crankcase
>> ^^^
>>>> aligned in the mill took me about 7 hours to build FFS.
>>>
>>> Yep, I've found that I spend more time making up fixtrues than
>> ^^^^^^^^
>> What a wonderful typo.
>
> I've been whooshed here, I think.

That's because you were viewing it with non-fixed width font

--
Tony
'04 XL1200C, '95 LS650
OMF#24

On Thu, 19 Jul 2007 07:19:37 +0100,
chateau.murray.takethisout@dsl.pipex.com (The Older Gentleman) wrote:

>Statto <statto.nospam@ukrm.net> wrote:
>
>> On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher
>> <pips.computer@spammers.foad.ntlworld.co.uk> wrote:
>>
>> >On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote:
>> >
>> >>
>> >>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message
>> >>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. ..
>> >>> Try cam followers at over £25 each (I think that's inc. VAT). I
>> >>> suddenly made an engineering decision that slightly pitted followers
>> >>> didn't matter that much.
>> >>>
>> >>And fitting a set of oversized followers is a **beeeetch**! If I _ever_ have
>> >>to do that reaming job again I quit. The sodding jig to hold the crankcase
>> ^^^
>> >>aligned in the mill took me about 7 hours to build FFS.
>> >
>> >Yep, I've found that I spend more time making up fixtrues than
>> ^^^^^^^^
>> What a wonderful typo.
>
>I've been whooshed here, I think.

"Fixtrue" and "jig"....

--
Statto
Daytona 955i SE in black
GT750 in disrepair

	#1
sweller	Tappet Trouble Ongoing battle with the Guzzi's tappets. The L/H exh tappet was noisy and having worked out I'd not done them for over a year thought it might be a good idea. The Guzzi tappets are simple screw and locknut and all were within tolerance except the L/H exh which felt very 'gritty' when I was winding it out. Removing it I found a few turns of the thread damaged as well as the nut. Imagine my surprise when I discovered the M8 1.0 threaded locknut was over £5 from Guzzi and the tappet adjuster itself was just shy of £10. Fortunately the fine threaded nut was only 20p from Namricks round the corner (it's a 13mm spanner rather than 11mm as was but the early models had 13mm so isn't a problem). I still had to buy a replacement adjuster. Problem is it goes out of adjustment very quickly (2 miles) and the threads in the rocker itself feel sloppy. Getting a replacement rocker is going to be tricky (even secondhand, unless JB has one?) and Friday is the only day I can work on it and I'm on the 06.25 ferry Saturday. I'm thinking of Loctite - what say the panel? -- Simon

	#2
Mark Olson	Re: Tappet Trouble sweller wrote: > Ongoing battle with the Guzzi's tappets. > > The L/H exh tappet was noisy and having worked out I'd not done them for > over a year thought it might be a good idea. > > The Guzzi tappets are simple screw and locknut and all were within > tolerance except the L/H exh which felt very 'gritty' when I was winding > it out. Removing it I found a few turns of the thread damaged as well as > the nut. > > Imagine my surprise when I discovered the M8 1.0 threaded locknut was > over £5 from Guzzi and the tappet adjuster itself was just shy of £10. > Fortunately the fine threaded nut was only 20p from Namricks round the > corner (it's a 13mm spanner rather than 11mm as was but the early models > had 13mm so isn't a problem). I still had to buy a replacement adjuster. > > Problem is it goes out of adjustment very quickly (2 miles) and the > threads in the rocker itself feel sloppy. > > Getting a replacement rocker is going to be tricky (even secondhand, > unless JB has one?) and Friday is the only day I can work on it and I'm > on the 06.25 ferry Saturday. > > I'm thinking of Loctite - what say the panel? Drill out the duff threads, fill with chemical metal AKA JB Weld, & tap to original thread size. YKIMS. Let us know if it works, I've never tried it on such an application. Having thought about it a bit more, couldn't you do the same thing except fill the hole with brazing metal or just steel welding rod? The adjusters and nuts for my ZG1000 are extremely hard, and are supposed to be torqued to 18 ft-lbs, so hopefully the Namricks nut is of similar spec to the original Guzzi one. -- '01 SV650S '99 EX250-F13 '98 ZG1000-A13 OMF #7

	#3
Beav	Re: Tappet Trouble "sweller" <sweller@mztech.fsnet.co.uk> wrote in message news:xn0f8tmb61unigj000@news.individual.net... > Ongoing battle with the Guzzi's tappets. > > The L/H exh tappet was noisy and having worked out I'd not done them for > over a year thought it might be a good idea. > > The Guzzi tappets are simple screw and locknut and all were within > tolerance except the L/H exh which felt very 'gritty' when I was winding > it out. Removing it I found a few turns of the thread damaged as well as > the nut. > > Imagine my surprise when I discovered the M8 1.0 threaded locknut was > over £5 from Guzzi and the tappet adjuster itself was just shy of £10. > Fortunately the fine threaded nut was only 20p from Namricks round the > corner (it's a 13mm spanner rather than 11mm as was but the early models > had 13mm so isn't a problem). I still had to buy a replacement adjuster. > > Problem is it goes out of adjustment very quickly (2 miles) and the > threads in the rocker itself feel sloppy. > > Getting a replacement rocker is going to be tricky (even secondhand, > unless JB has one?) and Friday is the only day I can work on it and I'm > on the 06.25 ferry Saturday. > > I'm thinking of Loctite - what say the panel? If you're eventually going to get a new rocker, use Loc-Tite's "Stud-loc" and it'll never move again. You WILL have to buy a new rocker and adjuster though or hit the parts with a gas axe to break the bond. Nothing ELSE but Stud-loc will go even halfway to seeing it work for a decent time period. Thread-loc CERTAINLY won't, nor will Loc-tite 240 or 242. IIRC the number is 270 (ish) for Stud-loc -- Beav VN 750 Zed 1000 OMF# 19

	#4
sweller	Re: Tappet Trouble Mark Olson wrote: > Drill out the duff threads, fill with chemical metal AKA JB Weld, > & tap to original thread size. YKIMS. > > Let us know if it works, I've never tried it on such an application. I'm unhappy to do such a bodge on stressed engine internals and the price of a fine pitch tap probably won't be too different to a new rocker. > The adjusters and nuts for my ZG1000 are extremely hard, and are > supposed to be torqued to 18 ft-lbs, so hopefully the Namricks nut > is of similar spec to the original Guzzi one. 18 ft/lb is pretty much the standard torque for an M8 nut. -- Simon

	#5
The Older Gentleman	Re: Tappet Trouble sweller <sweller@mztech.fsnet.co.uk> wrote: > I'm thinking of Loctite - what say the panel? Is there room to put a second nut on, to act as a locknut? -- BMW K1100LT 750SS CB400F CD250 SL125 GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3 BOF#30 WUSS#5 The bells, the bells.....

	#6
MikeH	Re: Tappet Trouble sweller wrote: > Mark Olson wrote: > >> Drill out the duff threads, fill with chemical metal AKA JB Weld, >> & tap to original thread size. YKIMS. >> >> Let us know if it works, I've never tried it on such an application. > > I'm unhappy to do such a bodge on stressed engine internals and the price > of a fine pitch tap probably won't be too different to a new rocker. > > >> The adjusters and nuts for my ZG1000 are extremely hard, and are >> supposed to be torqued to 18 ft-lbs, so hopefully the Namricks nut >> is of similar spec to the original Guzzi one. > > 18 ft/lb is pretty much the standard torque for an M8 nut. <south pacific mode> Tappet, tappet, tappet, tappet torque Torque about things you can't undo <\spm> -- Mike H

	#8
Gyp	Re: Tappet Trouble In message <xn0f8tmb61unigj000@news.individual.net>, sweller <sweller@mztech.fsnet.co.uk> writes >Ongoing battle with the Guzzi's tappets. >I'm thinking of Loctite - what say the panel? > Valve seats? -- Gyp Change to dotcom to reply

	#9
Mungo \Two Sheds\ Toadfoot	Re: Tappet Trouble JB wrote: > "sweller" <sweller@mztech.fsnet.co.uk> wrote in message > news:xn0f8tmb61unigj000@news.individual.net... >> >> Getting a replacement rocker is going to be tricky (even secondhand, >> unless JB has one?) and Friday is the only day I can work on it and >> I'm on the 06.25 ferry Saturday. >> > I've got one. Email with a postal addy and I'll get it down to the > post office today. > jmbyrne_AT_greenyonder.co.uk (changing the colour to blue obviously) > Are there some splendid people here or what, eh? -- Si - XV535

	#10
CT	Re: Tappet Trouble MikeH wrote: > sweller wrote: > > > > 18 ft/lb is pretty much the standard torque for an M8 nut. > > <south pacific mode> > Tappet, tappet, tappet, tappet torque > Torque about things you can't undo > <\spm> I read your posts and sometimes have to really wonder what's occurring inside your head. -- Chris

	#11
MikeH	Re: Tappet Trouble CT wrote: > MikeH wrote: >> sweller wrote: >>> 18 ft/lb is pretty much the standard torque for an M8 nut. >> <south pacific mode> >> Tappet, tappet, tappet, tappet torque >> Torque about things you can't undo >> <\spm> > > I read your posts and sometimes have to really wonder what's occurring > inside your head. You wonder? Try being on this side of it. -- Mike H

	#12
Greybeard	Re: Tappet Trouble "sweller" <sweller@mztech.fsnet.co.uk> wrote in message news:xn0f8u7s726px5i000@news.individual.net... > Mark Olson wrote: > >> Drill out the duff threads, fill with chemical metal AKA JB Weld, >> & tap to original thread size. YKIMS. >> >> Let us know if it works, I've never tried it on such an application. > > I'm unhappy to do such a bodge on stressed engine internals and the price > of a fine pitch tap probably won't be too different to a new rocker. It might well be worth having a chat with a local engineering firm, or maybe a decent local bike-shop, about helicoiling. Used it myself, in fact, I bought a kit not too far back as it really does work. Helicoils are not happy about being unscrewed and screwed up again to many times though, but for tappet adjusters I'd have thought it just the jobby as you never really actually back the thread right out each time you adjust. JMH2PW. -- Greybeard FLHTCUI UK-07 Mk II Trumpet Trophy 1200 new one coming soon! Garmin Zumo 550, To get me home! ukrm@foxtails[dot]co[dot]uk

	#13
Champ	Re: Tappet Trouble On 18 Jul 2007 07:59:21 GMT, "CT" <me@christrollen.co.uk> wrote: >MikeH wrote: >> sweller wrote: >> > >> > 18 ft/lb is pretty much the standard torque for an M8 nut. >> >> <south pacific mode> >> Tappet, tappet, tappet, tappet torque >> Torque about things you can't undo >> <\spm> > >I read your posts and sometimes have to really wonder what's occurring >inside your head. He's not right, is he. Long may it continue. -- Champ I don't know, but I been told, you never slow down, you never get old ZX10R \| GPz750turbo \| GSX-R600 (race) neal at champ dot org dot uk

	#14
Pip Luscher	Re: Tappet Trouble On 17 Jul 2007 22:17:41 GMT, "sweller" <sweller@mztech.fsnet.co.uk> wrote: >Imagine my surprise when I discovered the M8 1.0 threaded locknut was >over £5 from Guzzi and the tappet adjuster itself was just shy of £10. Try cam followers at over £25 each (I think that's inc. VAT). I suddenly made an engineering decision that slightly pitted followers didn't matter that much. -- -Pip

	#15
JB	Re: Tappet Trouble "Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com... > On 17 Jul 2007 22:17:41 GMT, "sweller" <sweller@mztech.fsnet.co.uk> > wrote: > >>Imagine my surprise when I discovered the M8 1.0 threaded locknut was >>over £5 from Guzzi and the tappet adjuster itself was just shy of £10. > > Try cam followers at over £25 each (I think that's inc. VAT). I > suddenly made an engineering decision that slightly pitted followers > didn't matter that much. > And fitting a set of oversized followers is a beeeetch! If I _ever_ have to do that reaming job again I quit. The sodding jig to hold the crankcase aligned in the mill took me about 7 hours to build FFS. JB

	#16
Pip Luscher	Re: Tappet Trouble On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote: > >"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message >news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com.. . >> Try cam followers at over £25 each (I think that's inc. VAT). I >> suddenly made an engineering decision that slightly pitted followers >> didn't matter that much. >> >And fitting a set of oversized followers is a beeeetch! If I _ever_ have >to do that reaming job again I quit. The sodding jig to hold the crankcase >aligned in the mill took me about 7 hours to build FFS. Yep, I've found that I spend more time making up fixtrues than actually doing the bodge^h job itself. -- -Pip

	#17
Wicked Uncle Nigel	Re: Tappet Trouble Using the patented Mavis Beacon "Hunt&Peck" Technique, Pip Luscher <pips.computer@spammers.foad.ntlworld.co.uk> typed >On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote: > >> >>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message >>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. .. >>> Try cam followers at over £25 each (I think that's inc. VAT). I >>> suddenly made an engineering decision that slightly pitted followers >>> didn't matter that much. >>> >>And fitting a set of oversized followers is a beeeetch! If I _ever_ have >>to do that reaming job again I quit. The sodding jig to hold the crankcase >>aligned in the mill took me about 7 hours to build FFS. > >Yep, I've found that I spend more time making up fixtrues than >actually doing the bodge^h job itself. Oh yes. And every time I get tempted into a short cut, I regret it. Large. -- Wicked Uncle Nigel - "He's hopeless, but he's honest" WS* GHPOTHUF#24 APOSTLE#14 DLC#1 COFF#20 BOTAFOT#150 HYPO#0(KoTL) IbW#41 SBS#39 OMF#6 Enfield 500 Curry House Racer "The Basmati Rice Burner", Honda GL1000K2 (Falling apart) Kawasaki ZN1300 Voyager "Oh, Oh, It's so big" Suzuki TS250 "The Africa Single" Honda ST1100 wiv trailer Norton 850 Commando

	#18
JB	Re: Tappet Trouble "Wicked Uncle Nigel" <wun@wicked-uncle-nigel.me.uk> wrote in message news:yWqj2yDm+onGJA05@rcav8r.demon.co.uk... > Using the patented Mavis Beacon "Hunt&Peck" Technique, Pip Luscher > <pips.computer@spammers.foad.ntlworld.co.uk> typed >>On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote: >> >>> >>>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in >>>message >>>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com ... >>>> Try cam followers at over £25 each (I think that's inc. VAT). I >>>> suddenly made an engineering decision that slightly pitted followers >>>> didn't matter that much. >>>> >>>And fitting a set of oversized followers is a beeeetch! If I _ever_ >>>have >>>to do that reaming job again I quit. The sodding jig to hold the >>>crankcase >>>aligned in the mill took me about 7 hours to build FFS. >> >>Yep, I've found that I spend more time making up fixtrues than >>actually doing the bodge^h job itself. > > Oh yes. > > And every time I get tempted into a short cut, I regret it. Large. > Indeed. Usually at my own expense too. JB

	#20
Statto	Re: Tappet Trouble On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher <pips.computer@spammers.foad.ntlworld.co.uk> wrote: >On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote: > >> >>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message >>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. .. >>> Try cam followers at over £25 each (I think that's inc. VAT). I >>> suddenly made an engineering decision that slightly pitted followers >>> didn't matter that much. >>> >>And fitting a set of oversized followers is a beeeetch! If I _ever_ have >>to do that reaming job again I quit. The sodding jig to hold the crankcase ^^^ >>aligned in the mill took me about 7 hours to build FFS. > >Yep, I've found that I spend more time making up fixtrues than ^^^^^^^^ What a wonderful typo. -- Statto Daytona 955i SE in black GT750 in disrepair

	#21
The Older Gentleman	Re: Tappet Trouble Statto <statto.nospam@ukrm.net> wrote: > On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher > <pips.computer@spammers.foad.ntlworld.co.uk> wrote: > > >On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote: > > > >> > >>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message > >>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. .. > >>> Try cam followers at over £25 each (I think that's inc. VAT). I > >>> suddenly made an engineering decision that slightly pitted followers > >>> didn't matter that much. > >>> > >>And fitting a set of oversized followers is a beeeetch! If I _ever_ have > >>to do that reaming job again I quit. The sodding jig to hold the crankcase > ^^^ > >>aligned in the mill took me about 7 hours to build FFS. > > > >Yep, I've found that I spend more time making up fixtrues than > ^^^^^^^^ > What a wonderful typo. I've been whooshed here, I think. -- BMW K1100LT 750SS CB400F CD250 SL125 GAGARPHOF#30 GHPOTHUF#1 BOTAFOT#60 ANORAK#06 YTC#3 BOF#30 WUSS#5 The bells, the bells.....

	#22
TMack	Re: Tappet Trouble "The Older Gentleman" <chateau.murray.takethisout@dsl.pipex.com> wrote in message news:1i1hl3h.x5otlq7y9jc9N%chateau.murray.takethis out@dsl.pipex.com > Statto <statto.nospam@ukrm.net> wrote: > >> On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher >> <pips.computer@spammers.foad.ntlworld.co.uk> wrote: >> >>> On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote: >>> >>>> >>>> "Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote >>>> in message news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com... >>>>> Try cam followers at over £25 each (I think that's inc. VAT). I >>>>> suddenly made an engineering decision that slightly pitted >>>>> followers didn't matter that much. >>>>> >>>> And fitting a set of oversized followers is a beeeetch! If I >>>> _ever_ have to do that reaming job again I quit. The sodding jig >>>> to hold the crankcase >> ^^^ >>>> aligned in the mill took me about 7 hours to build FFS. >>> >>> Yep, I've found that I spend more time making up fixtrues than >> ^^^^^^^^ >> What a wonderful typo. > > I've been whooshed here, I think. That's because you were viewing it with non-fixed width font -- Tony '04 XL1200C, '95 LS650 OMF#24

	#23
Statto	Re: Tappet Trouble On Thu, 19 Jul 2007 07:19:37 +0100, chateau.murray.takethisout@dsl.pipex.com (The Older Gentleman) wrote: >Statto <statto.nospam@ukrm.net> wrote: > >> On Wed, 18 Jul 2007 22:04:23 GMT, Pip Luscher >> <pips.computer@spammers.foad.ntlworld.co.uk> wrote: >> >> >On Wed, 18 Jul 2007 22:49:53 +0100, "JB" <JB@Nospam.co.uk> wrote: >> > >> >> >> >>"Pip Luscher" <pips.computer@spammers.foad.ntlworld.co.uk> wrote in message >> >>news:nj1t93lj30rs56jr6m58taq21cvnbbkrjc@4ax.com. .. >> >>> Try cam followers at over £25 each (I think that's inc. VAT). I >> >>> suddenly made an engineering decision that slightly pitted followers >> >>> didn't matter that much. >> >>> >> >>And fitting a set of oversized followers is a beeeetch! If I _ever_ have >> >>to do that reaming job again I quit. The sodding jig to hold the crankcase >> ^^^ >> >>aligned in the mill took me about 7 hours to build FFS. >> > >> >Yep, I've found that I spend more time making up fixtrues than >> ^^^^^^^^ >> What a wonderful typo. > >I've been whooshed here, I think. "Fixtrue" and "jig".... -- Statto Daytona 955i SE in black GT750 in disrepair