Comp. ratios

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R Pope

Senior Airman
318
11
Mar 10, 2004
Why were the CR's different from left to right heads on V engines, particularly the Daimler-benz's? One side is 8.2, the other 8.3, or similar. The old Ford Flatheads had the crankshaft offset in the block, so the valves were at different angles making for CR changes, but an OHV engine would not have that excuse.
 
The sidemounted supercharger caused different length of the air ducting to the cylinder banks. So the flow losses at the longer side were compensated by a slightly higher CR.
cimmex
 

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