leaking cometic gaskets...
leaking cometic gaskets... well guys i have a decision to make here.. i bought a used (2000 mile) shortblock (02 model ls1) to install in my 98..i got a set of headstuds and used cometic gaskets with it..i am currently having my heads refreshed and am going to assemble very very soon..my problem is i cant make up my mind about the head gaskets..i have the used cometics and they look to be in good shape..just a little film peeling off here and there and right around where the cylinder holes are. its not bad at all..i have been reading and reading about nightmares regarding cometic gaskets not sealing correctly..i DONT want to take off the heads once they are in the car.. i was going to order some new ones from napa but cant decide if they will like the 100 shot or not..i had no issues with my stockers until my rod bearing decided to take a dump. i paid nothing for these gaskets as they seller was kind enough to give them to me with my motor purchase..just dont want the damn things to leak..talk me in or out of it..
thanks matt
thanks matt
Originally Posted by C5Corvette
That's how I read what he is asking and it is not a good idea!
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There is nothing wrong with Cometics, they only leak if you don't do a good job of prepping the block and heads. I have zero issues with mine and they are awesome gaskets especially for high compression, boost, and nitrous. They are re-usable, but I don't think I would do it either, especially when they were mated with a different set of heads originally. Fel Pro's are also great gasket's and much cheaper. Either way, I would replace them IMO..
Dan
Dan
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hey man dont use the 1041 i just put them on my ls2 gto and had both of them blow out near the bottom steam took out both side of the gasket near the bottom head bolts i was PISSED had to do this ..i called felpro they have yet to get back to me,i put the stockers back on yes used ones i wipped them off run a bead of gasket sealer copper type and let dry and stuck them back on..i didnt have any idea what else to use of where to get the new stock ones tryed dealer...local one they are lost...i had heard of guys reusing gaskets i always made fun of them ,i have built lots of motors through the years so i thought what the hey..the car runs great and sounds awesome..needs better tune but damn head gaskets are fine..oh get this when the first gaasket blew it took out my radiator freakin plastic tanks..my car came with theree peices stck together gaskets and a single gasket wont work i would at the very least get GM gaskets if you dont trust your used ones..my car had 6000 miles when i did this and the seal looked good around the gaskets..just my thoughts,RC
The peeling your seeing is most likley the .001" layer of viton that is the main sealer on these gaskets. If it is coming off, do not use them. Teh other gaskets listed, like the fel-pros are for big bore's. 4.125" to be exact. You could use them, but compression will suffer a touch over using the correct gasket. I've also heard just as much bad things on them as the cometics. I'd look into the Mr gasket .043"s or just get some stockers.
