Originally Posted by turboboss
Originally Posted by sas
Funny that,
Mine also went between 3 and 4 at the Daddy thrash!
I was pulling 7000rpm in top when it let go. it also blew into the oil way so dumped loads oil around the engine bay. Running 8.8:1 CR and 25psi boost.
Before I had to fit the Felpro I was running with a copper head gasket and sealing rings from Ferriday, that coped with 2bar+, however it had been reused 5 times so thought I better retire it.
Simon.
so do you rate the copper head gasket? i have to see ferriday about another de-comp plate but even that when between three and four, going through the gears i do hit the rev limiter with nitrous which is a big no no so i probably Contributed to the failure

You have to find the limit? dont you.
I do rate the copper head gasket but I have only used it in conjunction with 8 of his sealing rings (they are 3thou thick and get placed above and below the head gasket), this was to facilitate 2.5bar of boost with Nos!
I am going to get another when I rebuild.
I have/had the 1.2mm thick one but he does thicker.