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#1
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New header gasket
While not entirely new the annealing appears to be and that would make these copper gaskets dead soft.
I have used SCE regular copper gaskets for years with success. While these are not cheap at 90+ $ (even the sbc ones are 60+) they are not going to blow out. The white Mr. Gasket ones always seem to blow out after awhile. Even the Mr. Gasket- Fel Pro Race gaskets do not seem to last forever. A lot of folks like Rem Flex too. I was going to buy some more regular copper SCE header gaskets for the new engine but I will risk another 50 bucks and try these out. https://www.summitracing.com/parts/sce-e28286 |
#2
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Once I started coating both sides of the Fel-pro exh gaskets with Antiseize I never blew another one out even thru full exh systems and the back pressure that they have.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#3
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Well, it looks like they are only in 1.875" size.
The standard ones I bought were a full 2" |
#4
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Your talking round port I guess?
Sorry I was referring to D port.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
#5
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I just use silicone
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
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#6
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This.
Save your money and just use high temp silicone sealer and no gaskets.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
The Following User Says Thank You to b-man For This Useful Post: | ||
#7
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Do you use copper?
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468/TKO600 Ford thru bolt equipped 64 Tempest Custom. Custom Nocturne Blue with black interior. |
#8
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
#9
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i like dow 333 i think is ill have to check its clear so not quite as noticeable, ultra copper high temp red, black it doesnt matter. if your flanges are close to flat it will seal up and you will be fine. just let it skin over a bit so the mess is minimum.
I do use steel dport gaskets on the manifold cars i own.
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1969 carousel red firebird 455, richmond 5 speed 1964 540 gto 1971 lemans sport convertible 1972 Maverick under slow construction |
#10
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The high dollar header manufacturers advise in their instructions to use high temp RTV.
I have a set I installed in 1988, D ports, and they are still on the engine, never leaked so far. The headers will probably rust through, before they leak at the heads. Any color you desire as long as it's high temp. Directly from Permatex: Quote:
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Brad Yost 1973 T/A (SOLD) 2005 GTO 1984 Grand Prix 100% Pontiacs in my driveway!!! What's in your driveway? If you don't take some of the RACETRACK home with you, Ya got cheated Last edited by Sirrotica; 06-25-2023 at 09:32 PM. |
#11
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Remflex hands down the best gaskets in my opinion
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#12
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The annealing process for copper is to heat it cherry red and quench in water. Would be hard, for an individual, to do with a header gasket.
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#13
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I used Ultra Copper (no gaskets), on SBC headers, on my daily driver with no failures. I never tried it on Pontiac. Would be tough to not make a mess it seems. I use Remflex for Pontiac. I use Ultra Copper on all header bolts as tread locker. Keeps them from loosening up.
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#14
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never had a header gasket failure using anything from the cheap white paper gaskets supplied with some headers, have hedman headers in use for 15+ years on a pontiac 400. & mr gasket graphite type gaskets on a 500+hp for 6+ years with lots of street miles & drag strip time on both engines.... but i use header bolts with serrations under the head to help lock & most important is to retorque after a few heat cycles then check/retighten 1-2 times per season. most headers require a little effort to check the bolts to keep them leak free unlike manifolds that are basically install & forget.
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#15
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Quote:
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#16
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Plus the 2” header opening match's the heads and header opening perfectly.
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#17
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Hey what ever works for you.
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#18
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Graphite-composite with steel core worked best for me. They de-couple the Header Flange heat from the head too.
Summit: https://www.summitracing.com/parts/r...+5dde8e04ccb6b O-Ports on ebay: https://www.ebay.com/itm/28531913007...Bk9SR-qQ9aWfYg |
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