oil to gas premix ratio

kak630 · Post by **kak630** » Wed Jan 20, 2010 4:19 pm

hi i just got a 85 vmx 540 which was bored and rebuilt and beefed up some they also took the oil pump system off the guy told me 1 quart of oil to 6 gal of gas is that right? im useing yama lube 2s is the ratio 25 to 1 for this sled? thanks. kevin

kak630 · Post by **kak630** » Wed Jan 20, 2010 6:00 pm

im new to this site and after posting i found that the guys that are premixing there gas were using 40 to 1 mix is this right? thanks again. kevin

Bob Vehring · Post by **Bob Vehring** » Wed Jan 20, 2010 6:11 pm

I use 40-1 in both my sleds. Amsoil Dominator

kak630 · Post by **kak630** » Wed Jan 20, 2010 10:19 pm

thanks i will do that

Post by **Vmax540** » Thu Jan 21, 2010 6:52 am

Bob Vehring wrote:I use 40-1 in both my sleds. Amsoil Dominator

X2 !

kak630 · Post by **kak630** » Thu Jan 21, 2010 8:47 am

hum sounds like you guys like amsoil i have a gal of the yamalube that came with the sled it dont have the mix ratio on it but i might have to try the amsoil thanks so much guys im sure ill have more to ask this is a great site thanks. kevin

Bob Vehring · Post by **Bob Vehring** » Thu Jan 21, 2010 10:45 am

I have at times run Yamalube, without problems, but my reasoning is this. We for decades make our living building racing engines for karts and 120 sleds. The engines use no main bearing for the rod to crank. We use a billet rod with simply a hole in the big end, that rides on the crank pin. No bearing of any kind. Sounds primitive, but it works, very well. We will go a entire season if good syn oil is used with no problems and very little, if any, wear. Now if petro based oil is used, the rod is trashed within several weeks. There is no question on the superior lubrication abilities of syn. oil
The 100 hp engines we use in sleds have a very mild life compared to the little race engines, my guess is any decent oil will get you by. Personally seeing how the cost is not that much more, I want the best I can get for my engines.
I used to use a brand called Golden Spectro, which is hard to find. I switched to Amsoil for one very good reason. Amsoil sponsors both the National series in sled racing.
Sport the people that support your sport

kak630 · Post by **kak630** » Thu Jan 21, 2010 9:32 pm

thanks bob that sums it up real good thanks for the advice. kevin