Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

Turbo Gaskets

 
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    924Board.org Forum Index -> Posts Rescued From the Old Board
View previous topic :: View next topic  
Author Message
Guest  






PostPosted: Sun Jul 01, 2001 11:00 pm    Post subject: Reply with quote

From: Paradigmatical
Email: paradigmatical@hotmail.com
Date: 01 Jul 2001
Time: 23:00:29

Hey all,
Last month I noticed the horrible sound of an exhaust leak and hoping it was a simple weld job needed, dropped my '81 931 off at the local shop. Unfortunately it was the gasket and bolts at the connection between the turbo and the front pipe. Still not a big deal, just get the parts and put them on. That done, the mechanic noticed that the sound had not gone away. Further inspection revealed that the gasket and bolts between the turbo and the manifold had also gone. The bad news is that my grease monkey is no expert on old Porsche's and feels it would take him two days to drop the engine to get at the gasket and doesn't have the bay time to devote to me. So now the car is sitting in the driveway just looking pretty (half it's job anyway, right?). I've gone through the Hanes and the tech section here and was wondering if anyone had some advice on this repair. Is it easier to remove the turbo than drop the engine out, or is there an even better way of replacing this one simple gasket? Somebody please tell me I don't have to scout out a new mechanic and pay for two days' labour. Thanks in advance for any help.

Back to top
Guest  






PostPosted: Mon Jul 02, 2001 4:56 am    Post subject: Reply with quote

From: Anthony
Email: anthys@hotmail.com
Date: 02 Jul 2001
Time: 04:56:09

Hi There

I have this problem also, actually I have a stud bolt missing where the turbo bolts to the manifold, but all the gaskets are going to be replaced when the turbo comes off, I am taking it to a specialist turbo/race car preparation place and he says he can do the whole thing in 1day.

I understand it is a nightmare job to do yourself and from past experience, lesser mechanics have taken upto 3 days to do this, however from what I have seen of this guy I think he can do what he says (his reputation is such that you have to book a month in advance).

I know this may not help you directly, but in my opinion you are as well to take it to a specialist if your not 100% confident, normal run of the mill mechanics don't have the expertise to deal with this kind of thing easily. If you were in the UK I could put you in touch.

Anthony

Back to top
Guest  






PostPosted: Mon Jul 02, 2001 9:28 pm    Post subject: Reply with quote

From: Paradigmatical
Email: paradigmatical@hotmail.com
Date: 02 Jul 2001
Time: 21:28:53

What about just replacing the bolts and not the gasket or sealing ring?

Back to top
Guest  






PostPosted: Tue Jul 03, 2001 4:31 am    Post subject: Reply with quote

From: Anthony
Email: anthys@hotmail.com
Date: 03 Jul 2001
Time: 04:31:49

It is in fact only the stud bolt that is missing from mine. However, depending on your circumstances, providing the thread is OK it is just very awkward to get to depending on which bolt is missing. I had mine replaced twice by lesser garages and they both failed within 2 weeks. It is imperative that you use proper porsche bolts, they are expensive but they are specifically designed for this purpose.
The reason i'm having mine removed is as the bolt has gone it has burned away the gasket (check yours also), it was no point replacing the bolt without replacing the gasket also, so i'm going all out whilst its off and bought a turbo gasket set to replace everything in one go, also having the oil pipes checked as there is a small leak around the turbo.

HTH
Anthony

Back to top
Guest  






PostPosted: Tue Jul 03, 2001 3:16 pm    Post subject: Reply with quote

From: dave2
Email: david.c.russell@lmco.com
Date: 03 Jul 2001
Time: 15:16:27

Try replacing the bolts, the gaskets may be ok. You can get buy without the very expensive Porsche bolts. Make sure that you use stainless bolts, and the real key to making them stay tight is to re-torque after 1000 miles. Even with the Porsche bolts, they stretch because of the very high heat in the turbo area. After 1000 miles, most of the stretch is gone, and re-torqueing them will bring them up tight. My aftermarket bolts have been in place for 15 years with no problems.

Back to top
Guest  






PostPosted: Tue Jul 03, 2001 5:36 pm    Post subject: Reply with quote

From: Paradigmatical
Email: paradigmatical@hotmail.com
Date: 03 Jul 2001
Time: 17:36:59

Hey there,
What do I need for aftermarket bolts (length, thread, etc.). I've pretty much decided that I can't sink the money into taking everything apart for another couple of months (all my good driving time!) anyway, so if the thing is going to sit there until then I might as well spend a couple of bucks on no-name bolts and give it a shot. Assuming of course that I'm not going to damage anything. Both bolts are gone, so it's very probable that the gasket is as well though. Thanks for the help.

Back to top
Guest  






PostPosted: Wed Jul 04, 2001 5:59 pm    Post subject: Reply with quote

From: Colin I
Email: colin@cingram.demon.co.uk
Date: 04 Jul 2001
Time: 17:59:51

you can get at the turbo to manifold bolts , but it's extremely awkward. some people actually remove the head with the turbo attached if the bolts are "frozen". this means taking exhaust and front X member off to access the turbo mountings ....!

On mine , one of the bolts had been sheared by a previous mechanic, and we had to get the remnants spark eroded out!( about 70 UK pounds / $100)

the Porsche bolts are 25 UK pounds ( $34 ) each - we race ours, so decided it'd be best to use official parts. as the turbo gets incredibly hot under this use . the gasket was around 15 uk pounds ( $20) and had burnt out due to the single bolt snapping.

we also changed all the other exhaust fixings & fittings ( studs, nuts, gaskets) for the whole front end of the exhaust - the cost was eye watering, but makes everything much easier to dismantle. I wouldn't do it on a road car though..

regards,

colin

Back to top
Guest  






PostPosted: Sun Jul 15, 2001 8:40 pm    Post subject: Reply with quote

From: john H
Email: a924carrera_gt@hotmail.com
Date: 15 Jul 2001
Time: 20:40:41

I wouldn't recommend the Porsche bolt - I used to replcae mine with these but about 10 years ago I put in type 316 Stainless steel bolts - they lasted longer than th ePorsche units and it they dropped out it cost about $2.00 to replace the bolt versus the $70 in New Zealand for the Porsche unit. My last set of Stainless have been in for about 10 years and are being replaced now a tthe same time the exhaust gaskets are being replaced - I've pulle dthe motor to do this as one of the studs on the head had sheared - dopey mechanic tried tightening it up thinking it would cure the exhaust leak.

Back to top
Display posts from previous:   
This forum is locked: you cannot post, reply to, or edit topics.   This topic is locked: you cannot edit posts or make replies.    924Board.org Forum Index -> Posts Rescued From the Old Board All times are GMT + 10 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group