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Registered
Join Date: Oct 2003
Location: Palm Beach Gardens, FL
Posts: 280
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HP Output of an 8.5:1 CR
Does anyone know what would happen if one were to install Mahle Pistons with an 8.5:1 CR instead of the "normal" stock 9.3:1 CR? Apparently the 1979 Porsche 911SC came with 8.5:1 CR, and yet they seem to be plenty fast when they're with me (1983 911SC) on the track.
1. Would that make for a SLOW car?
2. Can the heads be milled a little to increase the CR?
3. How much could be milled before the valves hit the pistons?
Thanks guys..............Andras
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1983 911SC Chocolate Kiss (Smokey Quartz Metallic)
1991 VFR750F
1982 VF750S
Miata (wife's)
Audi A6 Quattro (family)
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