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Higher Compression
I found a compression calculator that calculates the final compression ratio during in boost conditions. With a static compression ratio of 8:1 + 25#s of boost the actual compression ratio is 21.6:1 and at 30#s of boost it is 24.3:1.
With a static compression ratio of 9.5:1 + 19#s of boost the actual compression ratio is 21.8:1 and at 23#s of boost it is 24.4:1.
I am not really sure of the implications of this except that with the 9.5:1 compression ratio I would equal the 8:1 compression ratio with about 7#s less boost. I seems like I could keep a smaller turbo in the sweet spot and still make the same power as a bigger turbo and lower compression. That seems like a good thing to me.
Remember we are talking E85 fuel here.
Any comments?
Jeasen
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1989 TTA #798, A few mods. It still knocks when warm. Soon to become an alcoholic.
My Son's Car: 87 Turbo T, 204/214 cam, TE62, MSD 50's Chip by Eric @Turbo Tweak. Best ET 11.55 Best MPH 120.50 with a 2.10 60' with MT ET Streets. We are working on the 60' times.
2002 Dodge 2500 4X4. Yes, it has a Cummins.
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