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Gasoline re re re revisited
- Carm
- 10+ Years
- Posts: 1085
- Joined: Thu Aug 28, 2003 2:11 pm
- Zip Code: 21234
- Tractors Owned: 1947 FCub 1948 FCub (FrankenCub), 1949 C, 1952 SA, 1963 IH 3414 Backhoe Diesel, 1960 Oliver 880 Diesel, 1945 Mack EF Fire Truck
- Circle of Safety: Y
- Location: MD, Baltimore and Freeland
- Contact:
- dracer398
- 10+ Years
- Posts: 250
- Joined: Wed Nov 09, 2005 11:31 am
- Zip Code: 48706
- Location: Michigan-Bay City
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Gasoline re re re revisited
Carl,
You said it all!
The Cubs compression ratio I think I read somewhere is something like 6:1. The higher compression the more heat built up in the combustion chamber. When you have a high compression engine and try running low octane fuel, the heat from the compression prematurely ignites the fuel causing "preignition". A low compression engine can run on high octane fuel but not as efficently as it would with the recommended octane. High octane fuel could also make a low compression engine start hard.
Brian
You said it all!
The Cubs compression ratio I think I read somewhere is something like 6:1. The higher compression the more heat built up in the combustion chamber. When you have a high compression engine and try running low octane fuel, the heat from the compression prematurely ignites the fuel causing "preignition". A low compression engine can run on high octane fuel but not as efficently as it would with the recommended octane. High octane fuel could also make a low compression engine start hard.
Brian
1951 Farmall Cub, 1979 International 184 with a 1050A Loader (Thanks JP Tractor salvage), 1945 Farmall H, 1934 & 1935 F-12's
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