Quote:
Originally Posted by 3RotorRx7
Trying to decide on a compression ratio for a build on 2003 2.7 Boxster motor. I already have the top end ported by Hoffman Automotive Machine, and cams. Will be doing upgraded connecting rods, ARP bolts, and coated bearings. I see that the RSR motors are running 14.9:1. I will be running 109 unleaded race fuel. I will primarily be running it in FP autocross type events, and some track day sessions. Any advise would be appreciated.
Thanks,
Erik
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I assume your new cams have increased duration & lift so you have already lost some cylinder pressure from the stock 11 to 1. lnengineering.com makes pistons for this so I would get all your spec's together & call LN to see what they recommend.
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OE engine rebuilt,3.6 litre LN Engineering billet sleeves,triple row IMSB,LN rods. Deep sump oil pan with DT40 oil.
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