Maintenance & Technical > KX500 Original
OIL MIXTURE
don46:
I agree with Gowen, more oil = less fuel and at ratios discussed above I would think it would definately generate more heat.
Taos cycle in New Mexico ran tests on Snowmobiles, at the end they determined to much oil was worse than not enough.
As a personal preference I use 40:1 and the important thing is to use a good quality oil, whatever brand. I won't use Maxima 927 as stated by BDI in one of these posts, it seperates when cold, you go to start your bike and it won't run because the carb is full of oil.
kaw rider:
you guys are right. but when i race we have a track that we hold the throttle wide open for 20 laps. and these motors are under a very high load. after ten hours of run time i have no carbon on piston dome or in exhaust port or kips aren't carbon up at all at 24:1.
alan:
--- Quote from: kaw rider on September 09, 2007, 02:13:14 PM ---i'm shooting for 8:1 oil ratio.
--- End quote ---
Are you trying to cover your trail with smoke? :lol: :lol: :lol: :lol: :lol: :lol: :lol: :lol:
gowen:
--- Quote from: kaw rider on September 10, 2007, 05:37:36 AM ---you guys are right. but when i race we have a track that we hold the throttle wide open for 20 laps. and these motors are under a very high load. after ten hours of run time i have no carbon on piston dome or in exhaust port or kips aren't carbon up at all at 24:1.
--- End quote ---
You are wasting oil. But, if it works for you, that's fine. 24:1 is extreme - 8:1 is just crazy.. Slightly more than 1 1/2 quarts of oil? I'm going to assume you are not serious.
kaw rider:
here are the ratio at one gallon of gas.
100:1 1.28oz
80:1 1.6oz
50:1 2.56oz
40:1 3.2oz
32:1 4oz
24:1 5.3oz
16:1 8oz
12:1 10.6oz
8:1 16oz
so if a guy went from 32:1 to 50:1 that's only 1.5 oz less oil. if a guy went from 32:1 to 24:1 that only 1.3 oz of oil.
i have seen on the dyno 8% hp increase from 27:1 to 20:1 at max power. and 2% more at 16:1 ratio.
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