VP 4 stroke fuel
Posted January 13, 2003 - 11:45 AM
Posted January 13, 2003 - 12:22 PM
David, are racing at Lake Pleasant?
Posted January 13, 2003 - 01:22 PM
I've been looking at it recently and I did not see anything named specifically as "4 Stroke Fuel", but they do list C14 as a fuel for "4 stroke motorcycle racing".
I've got my bike into Piper Performance for valve work and Cliff recommended MS103. He says it is basically what they recommend to replace pump gas in the newer high compression 4-strokes. $4.89 a gallon. All my valves were pitted and he suggested to either introduce some lead into the fuel for better cushioning or to run the MS103 since it will burn much cleaner. Brenda (BikeDestroyer) has been running the MS103 for a little while but she says she went to a 50/50 blend with pump premium for better starting.
I'm going to see if I can get my bike jetted for the MS103 once I get it back. Not necessarily looking for more HP, just want to avoid the cost of valve replacements!
Posted January 13, 2003 - 01:27 PM
Posted January 13, 2003 - 04:29 PM
Posted January 13, 2003 - 05:03 PM
Yes, I have three children...my money is spent before I get it.
Posted January 13, 2003 - 05:09 PM
Posted January 13, 2003 - 05:38 PM
Posted January 14, 2003 - 04:38 AM
I plan to be at Lake Pleasant race, I've already registered. It is one of my favorite races, but it will be hard to race without a bike. Yamaha really has me by the balls right now. If I do get the bike in time, it'll probably be close to bone stock for the race.
Posted January 14, 2003 - 05:07 AM
Posted January 14, 2003 - 08:45 AM
In the long run I might not really be saving very much money, but there is also something to be said for keeping the motor in the best shape possible (I also don't use the cheapest motor oil I can find, either). And as Dwight suggests, a blend with pump gas might be the better alternative for performance and would not increase fuels costs all that much.
Posted January 14, 2003 - 08:57 AM
VP ultimate 4 is 96 octane, but the extra power increase comes from the fuel being oxygenated. It has oxygen in the fuel, yes this will lean out your jetting, and provide a very noticeable increase in hp. I did not have to change my jetting. I can slam on the gas with out the engine hesitating, like pump gas does, which can also be fixed with the BK mod. I have no idea about lead in the fuel, cushioning valves and what not. I dont think saving $ has anything to do with it. Its about making my WR more competitve while racing. I think running leaner will make the engine run hotter, and could shorten valve life. I only run it for races, and then go back to pump gas, which is fine for regular rides.
MXA did a nice article on fuels last year and may be on the web site, although I am not positive.
Funny how (mostly car stuff) octane boosters are advertised as increasing hp, throwing out words like Turbo and stuff. I supose the only way octane booster would increase HP would be if you car/bike was running so crappy with knock that it barely ran.
Posted October 06, 2008 - 07:59 PM