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beepbeep beepbeep is offline
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Join Date: Jun 2001
Location: Sweden
Posts: 5,565
Why such stratospheric revs? It all gets very expensive above 7500 RPM. If you need more power, you could try following combination:

6.5:1 C/R
Light JE pistons
H-beam rods
Cams that peak ~7000 RPM
GT3 crank/pump
Bigger turbo, more boost
Headwork,optimal headers

Yes, you would loose some off-boost toque but as long as you can keep it on boil, it will be fast.

Rod forces go up with square of RPM, so those last 500 RPM's demand very tricky parts. If power is needed, I would rather compensate with more boost and lowered C/R (to keep effective compression within reasonable levels).

It's usually TDC piston turn that loads the rods most, not the boost.
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Last edited by beepbeep; 11-27-2009 at 01:46 PM..
Old 11-27-2009, 01:43 PM
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