Racingjunk Forums - View Single Post - Running A 671Blower On A Eng. That Already Has 12.5:1 compre

03-03-2009, 02:46 PM

#2

bjuice

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Join Date: Apr 2003

Location: Greenville s.c.

Posts: 3,236

8mm or 13.9/14mm drive pulleys ?

also IMO you are on the high side of the static compression .i think i would ask myself how much final compression would i want to make then back into the pulleys..after you figure this i can give you some pulley ratio's etc...

here is a formula to determine final compression ratios from BDS

Final compression Ratio (FCR)=[(boost /14.7)+1]xCR
Boost = Max blower boost
14.7= psi @ sea level
CR= engine compression ratio

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