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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
5.5/3.7= 1.5

11.3 + 1.5= 12.8 C/R on boost.

This is near the very near of over the edge of what can be done on pump fuel.

An intercooler would help, twin plugs and the factory knock sensing helps.

You can have the piston tops machined to reduce compression to about 8.5/1 or J&E pistons can be had for a bit over $1k.

Getting the turbo pressure connection around the dist is a challenge if you were planning on using 930 exhaust.

Would be a cool project.

The early motors are known for leaking at the heads unless updated without turbo pressure.

SW or Protomotive might be able to do a chip for you. At a minimum you would need a RR-FPR.

IMO, it would be risky with the stock CR but you should check with a real expert.
Old 01-17-2010, 03:59 PM
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