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exhaust manifold studs

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manofaus

Post subject: exhaust manifold studs

Posted: Wed Mar 29, 2006 11:53 pm

848cc

Joined: Wed Jun 29, 2005 6:06 pm
Posts: 296
Location: Newcastle

on the gti manifold the studs at the bottom have broken off. I can replace them with some grade 8 studs. Should I use stainless studs? I was thinking of using just grade 8 studs and making up some brass hex nuts, but twice as long then usual nuts. Or should I just stick with the grade 8 studs and steel nuts.....?

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drmini in aust

Post subject:

Posted: Thu Mar 30, 2006 5:55 am

religious status

Joined: Fri Mar 19, 2004 6:19 pm
Posts: 39751
Location: near Baulkham Hills, NSW

Stainless is weaker. Trust me I've seen enough busted ones fixing outboard motors...

I'd stick with grade 8. :wink:

_________________
DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. :mrgreen:

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awdmoke

Post subject:

Posted: Thu Mar 30, 2006 10:40 am

1360cc

Joined: Thu Feb 03, 2005 1:41 pm
Posts: 12311
Location: Rockingham - Collie WA

Stainless also expands more with heat
- not a good result on exhaust manifolds

Go the brass/high tensile option!

_________________
Too many cars, and too little time.

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