Page updated on 04-26-2018

head design and compression = gas mileage

06-23-2008, 04:22 PM
basically waht head design has the bet fuel mileage. i kno the HF got great mileage. 8 vavles and long gears and light weight car.

the VX also got great mileage. VTEC-E and slightly shorter gears. now from what i undeerstand that VTEC-E is 16 vavles.

so what kinda head design makes for the best gas mileage?

also i've been researching that higher compression ratios result in a better thermal efficiency and fuel efficiency up to a certain point.

how tru is this?

Steven Folchi

06-24-2008, 12:12 PM
there are way too many things that play a role in gas mileage to narrow it down to head design.. as far as compression, the higher the compression the higher the octane you need to use to prevent detonation.

Add your comment to this topic!