Thread: race fuel vs stock engine q

so Harp has just over 1 gallon of MR9 that I'm going to get from him on the cascade day on 27th. Anyone else have a gallon or two they can part with?

DK, that VP MR9 Harp has would work great in your application. Run it pure for good fun, or you can even cut it 50/50 with 92pump. Have fun.

Mmmmmm Eric said C-12 Thats Hot!!!

Quote: Originally Posted by Ed who? what should i use" edwho? "simple, mix 50% VP U4.2 and have fun" so is that a special mix? 1/2 race gas 1/2 fun...

The issue with matching fuel, engine requirement and tuning, always focuses on the burning air/fuel raising the cylinder pressure to its maximum point at the right time in the piston stroke (generally around 5 degrees after TDC) If max pressure occurs before the piston gets to the top, it attempts to stop the piston and engine damage will result. If max pressure occurs too late , it is basically chasing the piston down the bore and not giving...

Quote: Originally Posted by Ed who? typically you can run 50% VP U4.2 for street/trackday without major mapping concerns. On a 600, MR9 is very easy to run pure or even mixed again mapping will really help smooth out and the throttle response, but not necessary. Like Tyson says, be sure to get the RIGHT fuel...110 octane say VP C12 would make about 3-5 LESS HP than pump gas in say a R6...so ASK THOSE THAT KNOW....aka "hey eric, i have a...

Ex-lax before you go to bed on the 26th will work just as well. I have a gallon or two of VP MR9 leftover from last race weekend. I'll sell it to you for 1/2 price on the 27th assuming you're talking about the CT day at PIR on the 27th.

I hear that Ducati's work best with High Sulfur Diesel.....ED???

Quote: Originally Posted by Dirtbag The issue with matching fuel, engine requirement and tuning, always focuses on the burning air/fuel raising the cylinder pressure to its maximum point at the right time in the piston stroke (generally around 5 degrees after TDC) If max pressure occurs before the piston gets to the top, it attempts to stop the piston and engine damage will result. If max pressure occurs too late , it is basically chasing the...

Quote: Originally Posted by thedarkknight So can you just map your bike for race fuel? or is there soemthing that needs to be done specifically before you can run it without causing problems? Yes. No.