What 2 stroke oil ratio do you run in your 85 86 250r

[atchonda]

I just use Walmart Castrol mix'er thick and bring spare plugs

[Tecate 50]

More oil makes more power.....Im not doughting you, but thats a new one for me! My theory was the leaner the meaner!

[DixiePlowboy]

More oil makes more power.....Im not doughting you, but thats a new one for me! My theory was the leaner the meaner!

Leaner air/fuel mixture(to a point), is the "leaner-meaner" quote.

Less friction is more power, also. I've seen in depth write-ups of the power output of a given engine measured on a dyno, using the same oil at different ratios. You'd be surprised at the results. Some actually produced more HP at 16:1 than 40:1.

Don't ask me to find it, as it's been over a year since I read it, but I'll stick my neck out and mention it just the same.

[JohnR.]

Actually, more oil does result in a leaner air/fuel ratio but I don't think adding more oil is going to make any more power. Modern oils have made tremendous advances over the old oils of the 80's and I don't see any reason to add more oil than the oil manufacturer recommends. I'm with you Tecate-50, a good quality oil mixed at a higher ratio is better. It will still offer more than sufficient protection for the cylinder wall and bearings and not gum up the combustion chamber, pipe, and silencer with oil residue.

John

[DixiePlowboy]

The same write up, and another or two suggested that the effect of a richer fuel/oil mixture had such a minute effect on the air/fuel mixture that it wasn't worth consideration. I forget how many mixture ratios you had to jump up or down to effect a 1% change in the air/fuel mixture.....but it was several.

Some of the "modern" oils we're using today are oils from the day. Some of those older oils work just as well as the newest oils. problem is, we can't ever really get a consensus on what oils are good and what oils are not....let alone what ratios are best, because everyone else's experience and subsequent opinion is purely subjective.

I used Castrol 2-cycle motorcycle oil for years(back in the '80's before I switched to Klotz) mixed at 20:1. Both machines actually ran years on rings and a single plug each....no joke. And back then I rode nearly every day...not just once in awhile. Go figure.

I used "modern" maxima 927 and went through many plugs and had excessive gumming and carbon. Cold temps and race gas/aviation?....shake well! Then shake again.

I've used Klotz ST for longer than I can remember with excellent results compared to maxima. No excessive carbon buildup, NO seperation issues whatsoever...even in freezing temps.

My only experience with Amsoil was buying more plugs and changing back to Klotz.

The best I can come up with is; that if it works for you, run it....and don't worry what anyone else thinks.

[NINJA]

Leaner air/fuel mixture(to a point), is the "leaner-meaner" quote.

Less friction is more power, also. I've seen in depth write-ups of the power output of a given engine measured on a dyno, using the same oil at different ratios. You'd be surprised at the results. Some actually produced more HP at 16:1 than 40:1.

Don't ask me to find it, as it's been over a year since I read it, but I'll stick my neck out and mention it just the same.

You are absolutely correct on this. Back in 2000-2001 at MMI I had ready access to a dyno. I also had my 2nd 86R. The maximum power output on that particular trike was at an 18:1 mix. I was using, you guessed it, Klotz R50. Another benefit worth noting is the fact that the engine consistently showed lower operating temps.

I see more lower end seizures nowadays then I used to, my observation has been that it's the customers that run 50:1-70:1 mix ratios with the new synthetics. Everyone seems to be on the "smoke is bad" bandwagon lately, IT'S A 2-STROKE GUYS! Oh well, keeps me in business.
I've said all I've needed to say. It's like trying to tell people they're wasting their money at the gas pump by filling up with premium when their car doesn't call for it. They'll swear to God it runs better, placebo effect is a helluva thing.

[DixiePlowboy]

I was using, you guessed it, Klotz R50.
.

Did you compare R50 against other oils, or just the mix ratios with that oil? The reason I ask was to see if there was a measurable power difference between the two oils(super techniplate vs. R50, specifically) at a given ratio.

I use Super Techniplate instead of R50 because of the(possibly imagined but claimed by Klotz-) added film strength of the 20% Benol castor blended in....not worrying about power valves sticking on an R. Do you see anything at work(or at MMI) to support or contradict that rationale?

[Bill]

Thanks for all the info !!

[factoryX]

hey actually klots r-50 has shown higher hp at the dyno than most other two stroke oils.

[Tbcoplin]

I ran golden spectro in my cr 250 dirtbike and mixed it 50:1 and had great results. I run yamalube 2r in my 3 wheelers @ 24-28:1. Remember, it's cheaper to change plugs that rebuilds. I was under the impression that more oil made the motor more sluggish. It takes a little longer to clean it out upon start up, but engine will last much longer.

[250rAL]

Bel-Ray MC-1 at 50:1 for the last 20 years. I've freshened the cylinder but the bottom end is untouched.

[NINJA]

Did you compare R50 against other oils, or just the mix ratios with that oil? The reason I ask was to see if there was a measurable power difference between the two oils(super techniplate vs. R50, specifically) at a given ratio.

I use Super Techniplate instead of R50 because of the(possibly imagined but claimed by Klotz-) added film strength of the 20% Benol castor blended in....not worrying about power valves sticking on an R. Do you see anything at work(or at MMI) to support or contradict that rationale?

I ran it up against Golden Spectro but not Klotz SP. The results from the Golden Spectro were very very close to the R50. I've run Klotz SP in the past plenty of times too, no noticeable differences be it seat O' the pants or teardown from the R50. Both are excellent oils.

One note of caution though, Klotz SP can be corrosive on certain metal surfaces if left to sit for extended periods of time. This is mainly an issue with snowmobiles that sit unused for a while.

[JohnR.]

Some good info in this thread. You have me thinking about possibly switching it up to a little more oil in my fuel. I know 2 strokes are supposed to smoke but I don't want to ride around looking like a crop duster either.

[DixiePlowboy]

Some good info in this thread. You have me thinking about possibly switching it up to a little more oil in my fuel. I know 2 strokes are supposed to smoke but I don't want to ride around looking like a crop duster either.

I understand that. I guess with as bad luck as I've had in the last few years, I see things the opposite. If I don't see some blue smoke behind me I start worrying...lol, and I'm always watching for white(coolant) or grey(transmission oil) smoke. I don't want clouds behind me either, but I don't want to open the motor up to build more often than I have to. Besides, someone's got to kill the 'skeeters

I ran 20:1 for years, but switched to 32:1 back in the '90s somewhere. That's as lean a fuel/oil mix as I'll personally go.

[NINJA]

Some good info in this thread. You have me thinking about possibly switching it up to a little more oil in my fuel. I know 2 strokes are supposed to smoke but I don't want to ride around looking like a crop duster either.

I like looking like a crop duster, it keeps those pesky 4-strokes away.

Honestly, the R50 at 32:1 doesn't smoke very much at all.