oil mixture..

[thmike]

Would it hurt to run 50:1 in my quadracer. i have an 89 lt250r with a weisco 30 over piston. But yeah i run some ams oil full synthetic crap. idk its pretty expensive. right now i'm just rebuilding the bike and if anyone has a better oil let me know. i've used this oil for a long time at about 32:1 and it seems to work awesome. ANd i have another question. does anyone know who makes a spark arrester silencer for this quad. i can't find one. just for a 91-92. could i make a silencer for those years work? any help would be appriciated!

[88lt250racer]

i think with amsoil your safe at 50:1, with most other oils i run 40:1

[Fast03Banshee]

if your running amsoil dominator, you should be running it at 50-1

[Oregon Duner]

IT the phrase "once you go semi you cant go back" really true.

[ONLY2STROKES]

dominator at 50:1 will be excellent.

[jet99]

I just got my quad up and running and it says in the manual to run 20:1..whats up with that?

[369DuneBunny]

amsoil dominator 40:1 now. . . i used to run it 50:1, but it was too lean. . . .

[razrbakcrzy]

Whatever you do, do not try to tune your motor by adjusting the fuel to oil ratio. Pick a ratio and tune to suit your riding style by adjusting the carb jetting (pilot, main), carb needle and the air:fuel mixture screw.

The fuel:oil ratio is about 99.9% for lubrication only and if you take it out of the tuning equation you will learn alot more about 2 stroke tuning.

Air:fuel ratio is about motor effeiciency. Burning the correct amount of fuel to make the motor run at it's peak potential without grenading.

Fuel:oil = 50 parts fuel:1 part oil

50 parts oil: 1 part oil is richer than 40 parts fuel:1 part oil by a very small percentage.

If you have 50 gallons of fuel in order to get 50:1 you would mix in 1 gallon of oil.

If you have 40 gallons of fuel in order to get 40:1 you would mix in 1 gallon of oil.

If you have 30 gallons of fuel in order to get 30:1 you would mix in 1 gallon of oil.

If you have 20 gallons of fuel in order to get 20:1 you would mix in 1 gallon of oil.

If you have 10 gallons of fuel in order to get 10:1 you would mix in 1 gallon of oil.

If you have 5 gallons of fuel in order to get 5:1 you would mix in 1 gallon of oil.

which has less fuel to oil = leaner
which has more fuel to oil = richer

Remember; fuel to oil ratio is different than the air to fuel ratio, think about them seperatley.

There will be alot of people who disagree with these statements. Please take somtime to think about it before you pass judgement. Just because you have thought about it one way all of your life does not make it right.

[kaosman]

Here's a link to a chart on Spectro's website, which shows the right amount of oil per gallon, quart, or ounce of fuel for ratios from 20:1 to 80:1. This chart has helped me with my premixing, maybe it'll help someone else too.

http://www.spectro-oils.com/fuel%20ratio%20chart.htm

[razrbakcrzy]

Nice chart, I use a ratio rite oil cup. It works wonders for getting the correct ratio every time. For no mistakes, I color the correct gallons and the ratio with a sharpie marker so they stand out.