hey guys, just after any ideas / help please....
I have an RB30DET with rb25det head.
fully built forged bottem end,
rb25det head , port , polish, 1mm over size valves, valve springs, head machined to fit bigger cams
cams tomei rb26 272 deg - 10mm lift inlet and exhaust machined to suit rb25 (tighe cams)
greddy genuine inlet plenum,
6boost merge collector exhaust manifold,
garrett gt4202r turbo, 48mm progate
100mm intercooler.
2 speed powerglide trans
had the car on the dyno the other night and made 242 rwkw on 15psi ..
power curve goes straight up to 240 and then goes straight across .....
making 500-550nm of torque
afr's 11.5-12.0,
stuffed around with cam timing and brought power on quicker and made 12rwkw more but
same thing happened.. will try get dyno print out
does any one have any idea on why ? been told should make 300- 350rwkw on that boost with the auto..
cheers
alex