Date: Sat, 8 May 2004 17:21:29 +0200 From: "MH" <nomailnospamere.no> Subject: Re: Compression ratio w/turbo blowing ?
> If I understand correctly (fat chance) the quoted compression > ratio for a Saab motor would be the "mechanical" ratio. If this > is correct, what is the effective compression ratio when you have > 11 or more pounds of boost blowing ? (If I'm incorrect, please > correct me :) The compression ratio does not depend on the boost pressure, it is the ratio of the smallest and largest volume in one cylinder (piston at TDC and at BDC). see http://en.wikipedia.org/wiki/Compression_ratio Max boost pressure in a FPT 900 is 0,7 bar (over atmospheric pressure = 1 bar), at that pressure the waste gate will (or should) open. ------- MH '72 97 '77 96 '78 95 '79 96 '87 900T8
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