Originally Posted by
Rogeyboy
This thread makes for some interesting reading!
Rob - i c your point about driveability and response, whats the use of 300bhp/300lbsft if you don't see it until top revs, a nice even spread of power and torque lower down would imo make a quicker car on the road.
Exactly mate, have a dig on here for D4_RST and have a look at his power graph. I would confidently say a good 200bhp rst would be faster in 90% of the driving situations you would ever come across compared to his switch on/off 300bhp.
Would a cam or ported head make it boost earlier?
Maybe when the heads off, if i go for porting, i could get it skimmed to raise cr abit?
This will have a few opinionated replies i think mate. IMO a standard cam will give you the lowest spool up time, you are making more power off boost therefore more exhaust gasses... which means a faster/sooner spooling turbo. Im sure this isn't true for ALL after market cams. A mild head would probably help too, but the larger the valves and ports the lower the gas velocity, and the less power you will make at low rpm and off boost.
To give you an idea, my car (before rebuild) was standard CR and stock bottom end, stock cam, stock head etc, with the obligatory scorpion exhaust and GRS front mount intercooler on mfi, with a stage 2 turbo this made 185 bhp @17.5 psi of boost, and whats more important 205lb.ft! with efi and a mild cam i think this figure would have been closer to 200bhp at the same boost. You may be better off with a stage 2 t3 for that power mate. We could always swap turbo's lol
Rob,