Originally Posted by
Karlos G
A stock RST is not 8.2:1 it's 8.5:1 and there is no problem running at 9.0:1 with forged pistons/rods, good mapping and 99RON fuel, plenty of big power cars running that sort of CR, Stu Collins and myself for example, I ran 30psi circa 280bhp and Stu makes another 100bhp on top of what I did
IMO the chances of a Cometic multi layer steel gasket failing if the block/head have been decked/skimed and is torqued down correctly are very low, you would need some serious heat to do that.
For the OP's target power of 300bhp I think it will be 100% spot on, will be a nice responsive engine with the right turbo
Also just to add... My current ZT build is 8.9:1 running a bar, 95ron fuel and there is still plenty of boost and advance to dial in when my new manifold is finished
Was thinkin of usin standard focus rs manifold with the frs gt25, I'm usin frs inlet, but unsure on management yet! Jus spoke to someone this morn to see If anythin can be shaved off the pistons to allow a thinner gasket! But gotta send them to them to see. proper head wrecker really! Dont wanna spend decent money an get shitty results!!
What management are you on Karlos? Is your c/r 9.0.1?
Cheers for the comments peeps, any help or advice is always appreciated!
