markyb31 Posted July 10, 2007 Report Posted July 10, 2007 I just picked up a 94 banshee about three weeks ago and was told by the previous owner it needs to run on race fuel. He does not know anything about the upgrades, (he got it in a trade). I am wondering what would be the possible mods that would require it to have to run on race fuel. Second part: Now that I have to buy race fuel, I figure I might as well use it in my RM 250. The RM is ported and jetted, can I run it on race fuel. I put about a half gallon in it and it seems to start easier and run faster! Third: I run a 32:1 mix in the RM, is this ok for the shee? I would like to run the same if possible. Quote
shee4speed Posted July 10, 2007 Report Posted July 10, 2007 1st,Probably some high compression domes.Your going to have to do a cmpression check and see where your at.2nd,You can probably share fuel in the other bike but may just be wasting race fuel.3rd,Sounds good,have fun. Quote
markyb31 Posted July 10, 2007 Author Report Posted July 10, 2007 1st,Probably some high compression domes.Your going to have to do a cmpression check and see where your at.2nd,You can probably share fuel in the other bike but may just be wasting race fuel.3rd,Sounds good,have fun. What would be considered high compression? It looks like it has an after market head, it does not match the color of the rest of the engine. Quote
shee4speed Posted July 10, 2007 Report Posted July 10, 2007 I'm thinking 155-160.Maybe just do a quick search. You'll get better answers. Quote
chevy7398 Posted July 10, 2007 Report Posted July 10, 2007 if your at around 160psi and up its time to at least run 50 50 mix, but it can vary with every engine, compression and timing are the main factors that determin if you need more octane, Quote
markyb31 Posted July 10, 2007 Author Report Posted July 10, 2007 if your at around 160psi and up its time to at least run 50 50 mix, but it can vary with every engine, compression and timing are the main factors that determin if you need more octane, 50 50 mix? I guess I'm not sure what you mean? 50:1? Quote
chevy7398 Posted July 10, 2007 Report Posted July 10, 2007 half premium and half race gas, for instance i put 2.5 gallons of 93octane pump gas and 2.5 gallons 108 octane race gas in my 5 gal jug Quote
RZBansheeMan Posted July 10, 2007 Report Posted July 10, 2007 50 50 mix? I guess I'm not sure what you mean? 50:1? Half premium pump gas and half race gas. 100LL avgas would probably work alright also. Quote
markyb31 Posted July 10, 2007 Author Report Posted July 10, 2007 I got ya. Thanks for the help guys. Quote
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