I've been running the 0.009" single layer viton-coated steel head gasket for about 15 hours and then I started blowing side cover gaskets, losing power, and burning a little oil. It ended up being that my head gasket blew into the oil passage right next to the cylinder:
I've had this happen to the old head, in the same spot, but I caught it before it got bad like this.
This engine with the old head had 9.9:1 compression at 29* timing. Now with the new head it has 10.6:1 and 32* timing. It runs 87 and 89 octane and never detonates.
I was thinking about trying one of the copper head gaskets from NRR. I'm not sure what the advantage to an MLS gasket is unless you need to run a thicker gasket than stock for squish clearance or to lower compression. I do not need a thick gasket but I can mill the head more if necessary.
Is this a normal failure on a modified engine? Am I using the wrong head gasket? Is it possible the deck surface is warped?
I've had this happen to the old head, in the same spot, but I caught it before it got bad like this.
This engine with the old head had 9.9:1 compression at 29* timing. Now with the new head it has 10.6:1 and 32* timing. It runs 87 and 89 octane and never detonates.
I was thinking about trying one of the copper head gaskets from NRR. I'm not sure what the advantage to an MLS gasket is unless you need to run a thicker gasket than stock for squish clearance or to lower compression. I do not need a thick gasket but I can mill the head more if necessary.
Is this a normal failure on a modified engine? Am I using the wrong head gasket? Is it possible the deck surface is warped?