Topica Loopframe_Guzzi Archive


Subject: Re: exhaust probs

Author: Martin Cooke

Date: Jul 27, 2002, 11:15 AM

Post ID: 1710682322





 My suggestions, if you feel like experiementing.

1) locking nut. but this time undo the locking nut and tighten the outer
at
 each tank fill. takes 2 minutes.
i'm not there when my mate fills up.

 2) locking nut. try two gaskets. yeah it's a long shot.

thought of that. seems a bit desperate, but will prolly give it a go soon.
 
3) stock. to heck with it, go back to stock nuts. but this time at each
tank
 fill give them nuts a good tweak (har har) I found I was getting a good
1/4
 turn out of each one for the first half dozen tank fills. I would use the
hook wrench (*gasp*) when the motor was hot. now I have no problems.

i charged mate 40 quid (what they cost me) for the locking nuts. he's gonna
want to use em.
 
just a thought.



 From: Martin Cooke <cook-@virgin.net>
Reply-To: Loopfram-@topica.com
To: Loopfram-@topica.com
Subject: Re: exhaust probs
Date: Sat, 27 Jul 2002 11:18:11 +0100

when i do them up, they are tight. headers are fixed tight to head. when
he
 
 brings it back, headers are rattling about in the head but the nuts are
still tight. they have not moved. deformation/erosion of the gaskets has
created the gap.

cookie


----- Original Message -----
From: "Zerhackermann" <chopp-@hotmail.com>
To: <Loopfram-@topica.com>
Sent: Friday, July 26, 2002 8:44 PM
Subject: RE: exhaust probs


 In thinking about this I wondered...could it be that the nut *seems*
tight, but isn't really all the way in and the headers are bashing
slightly back and forth, hammering the seal? Perhaps thebottom couple
threads are buggered or carbon clogged? Maybe a dremel with wire brush
could help that?

-----Original Message-----
From: Martin Cooke [mailto:cook-@virgin.net]
Sent: Friday, July 26, 2002 9:44 AM
To: Loopfram-@topica.com
Subject: Re: exhaust probs


i've seen similar on my friends bike. i assume the gasket has
flattened,
 
 
 not the manifold nut come loose. don't see how it can tighten itself
up.
 
 
 
cookie


----- Original Message -----
From: "Kevin Graf" <kgr-@midwestpension.com>
To: <Loopfram-@topica.com>
Sent: Friday, July 26, 2002 3:12 PM
Subject: RE: exhaust probs


 Well, I think at one point we came to the conclusion that it would
helps seal, reduce vibration through the threads and make up for
wore
 
 
 
 threads to
a
 certain extent, and helps the nut stay put a bit longer.
My locking exhaust nuts still come loose. Even though the lock nut
is
 
 
 tight,
 the actual exhaust nut backs it's way out a hair enough for the
engine
 
 
 
 vibration to waste the gasket. The only real way to tell this is by
loosening the locknut. Then I can clearly see that the exhaust nut
decided to run away again. It's weird, I know, but I have been
careful
 
 
 
 to notice
if
 the exhaust nut comes loose with the lock nut while I'm loosening it
and
it
 doesn't. It does it all on it's own. I probably got some real wore
threads.
 I would suggest you try loosening the locknut to see where the
exhaust
 
 
 
 nut is at, if you haven't already...

Kev

-----Original Message-----
From: Martin Cooke [mailto:cook-@virgin.net]
Sent: Friday, July 26, 2002 9:18 AM
To: Loopfram-@topica.com
Subject: Re: exhaust probs


what's the RTV supposed to do?

cookie

ps i got the locking nuts on my own bike & i never have to touch
them
 
 
 
 or
the
 gaskets.


----- Original Message -----
From: "Kevin Graf" <kgr-@midwestpension.com>
To: <Loopfram-@topica.com>
Sent: Friday, July 26, 2002 12:59 PM
Subject: RE: exhaust probs


 If you got the frame clamps and the locking nuts(I got 'em too but
I'm
not
 
 quit sure if they were worth the $$)You can try some hi-temp RTV
on
 
 
 
 
 the threads (tip from the list!). The combination of these three
things seem
to
 make my gaskets last a bit longer.

Kev

-----Original Message-----
From: EldoMike [mailto:msse-@classicguzzi.com]
Sent: Friday, July 26, 2002 7:43 AM
To: Loopfram-@topica.com
Subject: Re: exhaust probs


Has it got the frame to exhaust pipe clamps?

Mike
www.classicguzzi.com

----- Original Message -----
From: "Martin Cooke" <cook-@virgin.net>
To: <Loopfram-@topica.com>
Sent: Friday, July 26, 2002 3:19 AM
Subject: exhaust probs


 to whoever wrote this (i've lost track):

"cookie I always thought exhaust if it pops letting off the
throttle
and
 
 
 intake air leak if it popped getting on the throtle? B."

an air leak at the exhaust manifold will pop on the over run. an
air
leak
 on
 the intake will just make it run weak in my experience.

now if anyone knows how to stop an eldo getting a loose joint at
the head/downpipe i'd like to know. got a friends bike doing
this
 
 
 
 
 
 all the
time.
 NOT the nut coming loose (it's the locknut type), it just eats
the
 
 
 
 gasket
 
 after a few miles, air gets in, backfires like crazy. i put new
gaskets
 in
 &
 it's fine for a while, then same thing.

it started happening when new mufflers were fitted with rear
balance
pipe
 
 removed. i think it may be to do with the pipes moving &
flattening
off
 
 the
 gaskets. however the exhaust assy doesn't appear to be moving
any
 
 
 
 
 
 more
than
 stock.

i must have put 6 sets of ex gaskets in that bike & i'm getting
fed up
now.
 
cookie


----- Original Message -----
From: "E. C. Bud Durdle" <bu-@olympus.net>
To: <Loopfram-@topica.com>
Sent: Friday, July 26, 2002 1:46 AM
Subject: Re: Digest for Loopfram-@topica.com, issue 861


On Wednesday 24 July 2002 10:16 pm, you wrote:
>I heard a little while ago that the popping could be from
looseness
at
 
 the
 >head/exhaust header joint, or somewhere close to that. Check
to
 
 
 
 
 
 >make
sure
 >the exhaust is tight up there, and/or has no leaks.

> I am working on a 74 Eldo I just picked up with Amal Carbs.
> When I
let
 
 off the throttle and am gearing down
it pops through the mufflers. I have played with the air screws
and it
has
 
 gotten better, but it is still
>there. I have checked the carb intake gaskets and they are
fine.
 
 
 
 Someone
 
 told me
this is a common problem with running amals on a Guzzi. Any
ideas
 
 
 
 
 
 

>
Date: Wed, 24 Jul 2002 09:05:15 +0100
From: "Martin Cooke" <mjco-@nildram.co.uk>
Subject: Re: carb & air filter question


almost certainly an air leak as matt has said

cookie

cookie I always thought exhaust if it pops letting off the
throttle
and
 
 
 intake air leak if it popped getting on the throtle? B.





Scotch - Because one doesn't solve the world's problems over white wine.


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