just wanted to know who has used them in a high hp-high boost hot-rod class car, with or without o-ringing the block,they are supposed to be garanteed not to leak up to 50 psi. Looking for alternatives to the unsealable sce cooper gasket and o-rings for a non honda motor.

 

THERE IS NO REPLACEMENT FOR STOCK ALL OTHERS DO NOT COMPARE HAVE A STOCK GASKET CUT TO YOUR BORE AT RS MACHINE 310-328-5514 OR GOLDEN EAGLE AT 909-592-4311 GOOD LUCK

 

We use Cometic MLS gaskets exclusively and have NEVER had one fail. Had to pull the head on the road twice for repairs and reused the same gasket and it sealed perfectly. We use them with o-rings and stepped deck blocks.

 

We tried to use them on our cars and had a lot of problems so we just chose not to use them. What works for us may not work for others. OEM has never let us down.

 

Cometic HP gaskets are the ****. I have also used stock ones with no problems. Anything over 30lbs of boost though, you'll probably push a little coolant with a stock one

 

i got a o-ringed head with a sce copper head gasket with 90mm bore , with halamar sealent

 

I got one for sell brand new still in the package. 84 mm bore for b-series vtec pm if intrested.

 

well as i said in the first post,it's a non- honda motor, its a mazda motor, i called cometic and they quoted me 3-4grand to make a custom mls gasket for me.... so screw that, i will have to get my copper sce gasket to seal. Anywone thats been succesfull in getting a copper gasket with o-rings to seal care to shre the recipe? o-ring in the block or head? copper or stainless o-ring? receiving groove or not? what kind of glue? Thanks,Dave

 

i have never hat a problem with the stock gasket upwards of 700hp and no o-ring