What is the highest compression ratio for E85?
What is the highest compression ratio for E85?
According to Wusz, even given the cooling effect of E85, his recommendation would be to limit the static compression ratio to 13:1 on a 4.00-inch bore small block and slightly lower in a larger bore engine like a big block Chevy.
Is higher compression better for E85?
This means if you were to run E85 in an 11:1 or 12:1 compression engine, E85’s higher octane would prevent detonation, which would allow you to run this higher compression ratio and take more advantage of the reduced Btu heat output by squeezing the existing air and fuel a little harder to make more power.
What is the highest compression ratio for 100 octane?
It has an octane rating (AKI) of 100 and can be used in engines with compression ratios up to 12 to 1 (with hardened valve seats).
Does E85 make more power than 93?
With use of E85 ethanol and appropriate tuning, we saw a net gain of 64 WHP & 38 WTQ over 93 octane gasoline! The gains do not stop there either, E85 enables the limits to be pushed to levels typically only seen with race gas!
How much boost can you run on E85?
Even with the high 12.5:1 compression of the FA20 engine, E85 allowed us to increase the boost from 7.0psi to 9.5 psi with no detonation.
What is the compression ratio for 93 octane?
However, general guidelines would be that if you car has a high compression ratio, above 8.5:1 you should use 95, and if your car has a compression ratio below 8.5:1 you should use 93.
What octane is needed for 11.5 to 1 compression?
95 Octane
95 Octane. Gasoline with this octane number is known in Indonesia under the brands Pertamax Plus (produced by Pertamina), Super Extra (produced by Shell), and Primax (produced by Petronas). This type of gasoline is advisable for car engines with compression ratios of 11:1 to 12:1.
What octane is needed for 9.5 1 compression?
The standard recommendation for street engines running on pump gas has always been to shoot for a 9.0:1 to perhaps 9.5:1 compression ratio. This is in order for the engine to safely work with pump gas, which for much of the country, is limited to 91-octane.
Why do tuners run E85?
Faster Burning E85 fuel has a faster ignition time and flame propagation when compared to gasoline. This leads to higher cylinder pressure, as well as increased engine torque and power, gaining up to 20%. The increased exhaust gas flow allows turbos to spool quicker.
Why do street racers use E85?
E85 is popular in racing because the engine runs cooler with E85 than with gasoline. This is because Ethanol has over 1/3rd of oxygen by mass, which is higher than in oxygenated race fuels, where the levels are below 15% of oxygen by mass.
Does E85 wear out engine faster?
Improved Performance Flex-fuel vehicles don’t experience a loss in performance when using E85 fuel. In fact, some even generate increased torque and horsepower.