Exhaust TECH Mufflers, Headers and Pipes Issues

          
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Old 09-13-2002, 09:51 PM
jimn jimn is offline
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I have a set of repro D-port exhaust manifolds that I want to put on my 67 goat. I would prefer to use studs instead of bolts to mount the manifolds to the heads. Does anyone know of a source for grade 8 studs for this application?
Thanks - Jim

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Old 09-13-2002, 09:51 PM
jimn jimn is offline
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I have a set of repro D-port exhaust manifolds that I want to put on my 67 goat. I would prefer to use studs instead of bolts to mount the manifolds to the heads. Does anyone know of a source for grade 8 studs for this application?
Thanks - Jim

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Old 09-14-2002, 10:57 AM
mike nixon mike nixon is offline
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try a local parts store if they don't have them they should be able to order them.

why do you want grade 8 for exhaust?

it would seem to me that the heat would eventually take the temper out of them anyway.

just curious, mike

[ September 14, 2002, 10:58 AM: Message edited by: mike nixon ]

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Old 09-15-2002, 11:23 AM
jimn jimn is offline
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Mike -
I tried a parts store with no success, but you're right. I should try another place. As far as the grade 8 goes, I think you can safely torque them more than untempered fasteners. I don't know what alloy grade 8 fasteners are typically made from, but in my experience with heat treating tool steels, temperatures well over 1200 degrees are required to aneal tempered steels. What this all means is if this highly technical metalurgical theory is bull-sh--, I can resort to the truth and say "couldn't hurt".

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Old 09-15-2002, 01:11 PM
mike nixon mike nixon is offline
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if the parts store doesn't do you any good try a machine shop or a farm implement dealer. either of these should be able to order what you want.

mike

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so many pontiacs, so little time..................


moderator is a glorified word for an unappreciated prick..................


"Only two things are infinite, the universe and human stupidity, and I'm not sure about the
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"There is no such thing as a good tax."

"We contend that for a nation to tax itself into prosperity is like a man standing in a bucket and trying to lift himself up by the handle."

- Winston Churchill
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Old 09-15-2002, 09:57 PM
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David Jones David Jones is offline
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The torque spec on the RA manifolds is only 35lbs. I think where the grade 8's will come in handy is 5 years from now when you need to take them out. Should be less likely to break. David

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Old 09-15-2002, 10:16 PM
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Robert Williams Robert Williams is offline
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Don't forget the Anti-Seize!

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Old 09-16-2002, 09:12 AM
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2nd on the anti-seize. I like the way it gets on your fingers at the worst possible times. Makes starting a bolt with your hand wedged up in some impossible location a challenge. David

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