87 octane?

**colonels17** · 08-17-2011, 09:25 AM

stock BUSA motor. my timing is set at 38. i have ran 110 octane and went 9.20's, switched to 87 and ran 8.90's. im only worried about engine damage? Can i run 87 with the timing set at 38?

**Marion Ford** · 08-17-2011, 12:02 PM

87 is fine on a drag bike. Still runs ok with 13-1. You may pick up some mph with just a little less timing

**colonels17** · 08-17-2011, 01:05 PM

Thanks again Marion!

**2bking1320** · 08-17-2011, 01:35 PM

I want some of that gas ! There has to be more to this story !

**riceburner** · 08-17-2011, 01:45 PM

87 octane burns and has more potential energy than the higher octane fuel that resists detonation by not burning.

**2bking1320** · 08-17-2011, 04:01 PM

Does it burn to fast or why do you have to use C 16 or equelivent in a turboed motor ? Or do I just think this ?

**riceburner** · 08-17-2011, 04:34 PM

the high octane ratings are used to deter detonation

**Marion Ford** · 08-17-2011, 04:47 PM

Just look at the crazy #s you can get with the ox. fuels. You will see most of the bigest gains come from the lowest octane #s, as long as it dont detonate.

**riceburner** · 08-17-2011, 05:09 PM

Octane level in U4 is in the mid 80's

**2bking1320** · 08-17-2011, 08:23 PM

So...In a Stage II Velocity kit with water injection / JE Turbo pistons / good head and 22lbs of boost in your opinion what is the fuel you'd use ??????? HayabusaEdited by: 2bking1320

Thread: 87 octane?

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