Maintenance & Technical > KX500 Original

Fuel

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demographic:
I voted for other cos over here we can get 98 from the pump :)

I don't use fancy race fuel cos I fill the bike up from the pump and use it on the road, that way I can use the stuff I can get anywhere and don't worry about it much.

Rick:
I used to buy VP 55 gallons at a time.  However, we were spending more than $2,000 a year on race gas.  I surmised that I could rebuild a lot of motors for the difference in price.  As a result, I switched to Chevron Premium, and have not had one problem in almost five years, even with the KX125.

Rick

KXcam22:
On the topic of fuel I forgot to add that I always add fuel stabilizer to my chevron 94 bike gas.  Beside the KX, I use my bike gas in everything around my house, kids bikes, weed whacker, chain saw, boat motor etc.  One mix for all.  Since I live in a land of extreme seasons, my toys get parked in the cold for 4 months of the year, often without warning (ie early snow).  With so many small engines around (i'm sure everyone is in this boat) I got tired of cleaning sticky fuel residue out of the carbs each spring.  Now I can store them away at anytime, don't even drain the carbs.  I have been doing this for the last 8 years and haven't rebuilt a carb since.  Lazy but effective. Cam.

BrianSM:
Help me out here.....I run all different types of race gas and have noticed small differences.....I am gonna try premo pump gas 97 octane with my Fuchs oil (40-1)......Is it not true that high octane fuel is most benefited in a high compression engines like 10-1 and above....The high octane burns slower apparently ?? The KX having a relatively low compression should actually build more power on 97 octane....mixed with 32-1 ratio using synthetic oil ??(like the book says) Right ??? I have always run race gas cause a fellow 500 owner/buddy does.... :? I am dynoing my bike tommorrow with 40-1 and using 110 and 97 mixed 50/50.....yes this is my SM track bike....any thoughts I would as always appreciate it !!! :wink:
I will post my results......

John:
Cool to see some power graphs!

The octane is a meassurement of how easy the fuel self ignites by compression. The higher octane - the higer compression it can take. I think the actual number is a percentile of two components in petrol, so anything over 100 is not applicable for petrol. Diesel (can't be meassured in octance) would have a value of 120 something with regards to self combustion. (All from school - 20 years ago).

Led is (used to be) a cheap way to bind the 'octane booster' component in the petrol. There is no led in the green fuel. They must be doing it some other way now.

//John

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