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How to get 300bhp at 1.0bar
Brother firkins asks: ...besides cam, turbo and intercooler [what
needs to be done] to get 300hp @ 1.0bar...
Funny you should ask. Got the math laying around home somewhere
that can get very close---if I can find it tonight I will post it. In
general terms you need the following:
Much larger turbo---something on the order of a turbo from a
930. k27++. Obviously, you need to match the intercooler to the turbo,
and have a cam reground. You also will [*if* you can reach 300bhp @
1.0bar with the I5] need mucho flow with header / exhaust; reconfigured
fuel delivery; and, the engine will be bored and stroked. Head work is
necessary as well.
300bhp @ 1.0bar is very difficult and expensive on the I5. On
the Porsche 6 you can get very high hp numbers at 1.0, but even that
requires a huge turbo / intercooler and stretching the motor's insides.
This is where we need to focus, I believe. At 1.0, compression
can be much higher [in fact will be much higher] without the scares that
we should now all have at 1.8+.
I will try to post specifics when I find the bore / stroke
numbers I have been playing with.
Bruce