hot125mod said:also it would lean out the race fuel right? :whoa:
hot125mod said:ok i totally worded that wrong anyways like you said in your article Fuel terminology 1 "Octane boosters and alcohol can change the density of a fuel to a large degree", is that the same for ether like in u2
hot125mod said:Rich do you happen to have a distillation curve for U2 and does U2e have ethenol in it to give it the o2
Rich Rohrich said:- Throttle response (lower numbers = better response)
- Octane rating (higher numbers = higher octane)
- Piston crown cooling (higher numbers provide greater crown cooling via a hook in the end of the distillation curve)
So a fuel like FirePower 324 has :
3 = very sharp throttle response
2 = moderate octane rating
4 = minimal piston crown cooling
This makes it an excellent fuel for a high speed four-stroke like a YZF or CRF but not the best for a high strung two-stroke.
I'll follow up with much more detailed info when I get a chance.
bclapham said:i ran it in a 05rm250 with a stock topend and cylinder, and it detonated, not bad, but its the first time ive ever had detonation running a straight race fuel.
its not that i dislike detonation, since its always a good sign the jetting aint too far off.
Rich Rohrich said:Bruce - Were you running the SST pipe at that point?