hey i built a b20v setup bored to 84.5mm because it was b20/v i used a cometic gasket because of the different dowel pin sizes. since i have used this gasket i have had a lot of head gasket issues. now before installing this gasket i had the head resurfaced and the block decked. the motor is fresh out the machine shop. the car overheats randomly its like i can't keep coolant in the car. the car doesnt smoke and there is no coolant in the oil or oil in the coolant. so if the gasket is still leaking then it is a very slow leak. I have arp head studs in the motor that are torqued correctly. do you think that the cometic gasket is the problem or do i have to pull the block and have it resurfaced again? if it's the gasket, what gasket should i use?

 

who did the decking of the block?do you have a blockguard installed?how do the spark plugs look?what model"mill size"hg did you use...

 

eisle's machine shop did my decking (i have never had an issue with their work), i'm running a block guard that i installed before my machine work, the spark plugs look fine, and the gasket thickness is .030.

 

i think sometimes the block guards can restrict coolant flow, my fried had a similar problem with a h22 he had to modify his blockgaurd i dont remember exactly what he did though sorry

 

Yes if the block guard is not pressed down the half inche or so it needs then it will. Make problems with temp and that makes steam and sometimes you don't see it. As in smoking

 

i think my friend drilled holes in his lol, not sure if thats ghetto but im remembering i think thats what he did

 

dang lol i'm not a rookie, yes i have the block guard pressed down.

 

hope you figure it out bro

 

me too...

 

I have had nothing but negative experiences with Cometic.