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the effective comp of the 7.5 to 1 piston/rod setup will be some what offset by the later valve closing of the SC cams. This combination should work well together, but high octane gas is a must. I am rebuilding a 3.3 turbo motor with 3.4 RUF pistons and cylinders which have a 7.5 to 1 comp ratio, and will probably limit the boost to .8 or .9.
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Victor Toce
2000 Boxster S w/
Tequipment exhaust
1993 Spec Miata
87 911 turbo - sold
3.4 RUF pistons and cylinders
Euro CIS head
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