cylinder heads whats it worth?
Turbo Mini Forums

i got my supercharger suck through set up running recently and its all going to be removed again this week to spray bulkhead and rest of engine bay and sort out a few minor niggles,

so i was wondering how much power can be released from the standard minispeed turbo head (soduim + double springs) via porting the inlet and exhaust,

i was going to ask turbophil or benross if they could do the work and stamp there mark on it,

(and yes i dont intend on using the decom plate anymore so was going to see about opening up the chambers)

For reference - with STD head my car made 169 nanas at 20psi. It now makes around 175 with 16psi.

Problem is that it can't be directly compared as a few other things have changed inc the capacity, turbo and intercooler.

CR was about the same and the cam wasnt changed.

In the 13's at last!.. Just

so 169 with standard and 175 with modded? and whatwork was done?

it must have made some improvement?

Make the thing breath. The N/A head was choked to death! Imagine what it does to a Turbo engine.

Its all about making it easier fot the gas flow to get in and out as fast as possible.

Own the day

If you are going to do it, get your car on a rolling road before hand then you can put it on the same rollers after the work and judge the gaines for yourself.

In the 13's at last!.. Just