Boost limit on Stock 08 Found!

[turbogpz]

I found the limit of an Stock 08 Turbo, non intercooled. The head lifted at 11.4 psi. The failure point was in the rear of cylinders 2 and 3, top side of head gasket. Would blow out rad overflow. NO damage to head, valves or pistons. A/F 11.5, VP C16 fuel, no timing retard, 2ndary injector RCC kit Full Pipe
Turn it down to 7psi, no leakage out rad overflow.... Studs stretching..

Cure will be, ARP Studs & nuts & washer kit, .080" spacer, Cometics MLS gasket,
APE adjustable gear.

 

[suzuki4life]

do you know there is no damage to the head?

 

[jakesoutlawperformance]

on my stock 05 turbo busa I had the same thing happen, I run it for a few weeks at 10# boost and it started puking water out of the overflow. Then when I ran it on 6# it didn't leak any more.................for a few weeks, then it started leaking on low boost only on a hard 1/4 mile run,then at half throttle as soon as the boost got over 3-4#, so then I put head studs and a .040 spacer with a cometic gasket and it lasted the whole summer and started again, I think because I didn't have my head and cylinder surface ground. Now with my new turbo motor (mtc pistons, 08 crank, crowers, etc.) it is doing just fine be sure and check your head and cylinder for warpage.