Landracing Forum

Loring Timing Association (Maine) => Loring (AFB) land speed venue => Topic started by: Chris08Bus on May 02, 2014, 11:58:34 AM

Title: Racing Fuel
Post by: Chris08Bus on May 02, 2014, 11:58:34 AM

What are people running for race fuel on natually aspirated bikes with high-ish compression ratios?  I was looking at the VP website at both leaded and unleaded fuels.  Looks like a good choice for leaded would be MR12 or C12, and unleaded would be C10.  I ran some MR12 at the Harvest Event last year and it seemed to run really well but at $150/5 gallons, that's pretty pricey.  Hayabusa compression ratio (stock) is 13.1:1.

Title: Re: Racing Fuel
Post by: sabat on May 02, 2014, 01:19:52 PM

MR12 will make the most power, but you need to richen your tune for it- preferably on a dyno, or with your own wideband O2 sensor.

Title: Re: Racing Fuel
Post by: Roland6250 on May 03, 2014, 12:25:53 AM

MR12 delivered an extra 21hp on the dyno for me.

Title: Re: Racing Fuel
Post by: Chris08Bus on May 04, 2014, 07:34:24 AM

I plan on running Autotune with my PCV. Will that be enough or is it worth a visit to the dyno?