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#1 |
Senior Member
Join Date: Jan 2002
Location: calgary,Alberta,Canada
Posts: 387
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Gasket questions
Can anyone tell me...
On the new style gaskets that have an O-ring built into them do you need to use silicon or what is recommended? The gasket I am refering to is the thermostat housing. Also I feel a little foolish asking this one but, on the exhaust manifolds I seem to remember always having the "flat side" of the gasket towards the head. However, I was told by a parts guy at a local parts store that it was the other way around with the flat side away from the head. It doesn't seem right for some reason. It has been a while and if the parts guy wasn't so sure about it, I am sure it wouldn't have come up. Can someone set me straight. ![]() Thanks Curt
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1972 CHEYENNE SUPER SWB BLACK. 402 BB, TH400, AIR, TILT, TACH, BUCKETS, CRUISE, AM/FM, 8 TRACK. My build thread: http://67-72chevytrucks.com/vboard/s...=1#post7120181 |
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#2 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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rubber O ring is all you need, no additional sealing meathods are needed.
I always installed manifold gaskets metal side out to the manifold. |
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#3 |
Chevy Nuttttt
Join Date: Sep 2004
Location: Santa Maria Ca.
Posts: 568
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unless the housing is warped. wich does happen. if it is put a D.A. disk on a piece of glass and sand away.
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67' Chev swb step side 69' SS elky 03' Chev ext cab 4X4 hey who lernt me to spell ![]() ![]() |
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#4 |
blood type; Retumbo
Join Date: Jan 2004
Location: next to my reloading bench
Posts: 10,269
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I do not like the O ring gaskets for anything involving coolant. the hot-cold thermal cycles will cause it to leak sooner than a good paper type gasket. even better yet Felpro has a therm gasket made of some kind of rubber over a plastic core. I dont know the # but they are around $8 IIRC.
as for the exhaust, DO NOT USE the run of the mill gaskets. go to the dealer & ask for exh gaskets for a '97 Chevy P30 step van with the 5.7 VIN R. it is a multiple layer stainless steel unit that will NEVER leak. these are not too spendy, but more than the leaky ones.
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Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card |
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#5 |
Registered User
![]() Join Date: Feb 2001
Location: East Central, MO
Posts: 11,336
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I run the ole regular metallic gaskets with the little ears on my headers and havent had a leak since the early 90's. I put the silver side out. about 7 bucks.
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#6 | |
20' Daredevil (Ret)
![]() Join Date: May 2003
Location: Jefferson State
Posts: 13,647
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Quote:
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- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
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