More dyno #'s Ported vs oem 100 vs 92 and ignition advance

[SierraWoodsman]

According to Torco's info I should have been at 102.....

I dropped the compression back down. After 200 - 210 they just make too much heat. I had to know how much was too much though.

Does Torco use ethanol to increase the octane rating as do some of the other octane boosters?

 

[wyk]

Several ways. You can raise the exhaust a couple of degrees, take a bit more out of the squish band, or add a thin gasket under the base. On this one, I cut .010 more from the squish and raised the exhaust two degrees.

 

[one.man.band]

congrats on your dyno!!!!........ last i remember you still needed something machined.

 

[one.man.band]

i tested fuel some years ago, lower octane=more power

as long as your testing fuel, try oil ratio 50/1 40/1 32/1 20/1 16/1

you will find that the more oil =more power

40:1 to 32:1 approx. <2%.

some may be able to feel this, i don't know. until i saw the published results on another site recently, had to change my view on this on this one. seems that torque increases ..........until the exhaust smokes....at that point it goes the other way.

long time ago, someone posted that he was running 16:1 in a modern saw. he got scolded pretty hard. he never mentioned more torque, only said his saw ran well. better ways obviously to make power, but interesting non the less.

-omb

 

[Mastermind]

Just askin cause I don't know the answer. Would running av gas have helped the heat problem.

Maybe.......but in my experience AV gas hurts performance in a two stroke.