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Re: Increasing Compression
Quote:
Originally Posted by Dessertrunner
Okay some rough numbers.
3,318 Litre
6 Cyclinder
97 mm Bore
7.3928 Area of piston
Target compression Final Volume Difference MM to Shave
Current 10 55
11 50 5 0.680
12 46 9 1.247
13 43 13 1.726
14 40 16 2.137
15 37 18 2.493
I think there maybe mistakes so if so please yell.
Tony
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Tony yes there is a problem with those numbers. You are assuming that the combustion chamber is a cylinder, so that each 0.5mm shaved will result in a reduction of 3.7cc, but the chamber is not round, it is a flat sided oval, so the cut of 0.5mm of the chamber, won’t yield 3.7cc, it will be a lot less.
You would need to cc the chamber to see what volume that shaved 0.5mm would be.
Harvey.
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