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TM45 on alky- Hightower, this bud's for you!
I have been having some issues with getting the TM to perform correctly on methanol.
It has a pretty bad stumble when you hit the throttle any harder than a feathering it backfires on deacceleration it seems to be running pretty hot doesn't have the power it should won't rev out bery quick under load EDIT: ~ PUMP NOT ACTIVATED~ I have started with a 40 pilot, and drilled it with the numbered bits, all the way through from smallest to biggest (bigest being i think 0.0665 or something) Even took the pilot out all together. Seems to want to be more than what it is now, but less tahn out completely. The biggest bit i used ended up taking out the little tube on the end of the jet.... Needle is a 95, tried the lowest clip, the second lowest, and the third lowest, still no go main is only a 250, tried that and tried with it out... Mods are as follows: Airbox lid on Uni filter Snorkles on, but cut to 12 inches or so 11.5-1 comp CP piston Ported head stock CDI (rwr crapped out) Stock cams ported intake 22 inch razr 2's on rear twist throttle to compensate that damn pull elevation about 2200 ft tamp about 5 degrees celcius i think thats all that effects engine wise And one other thing....the brass plate thats on the slide has a seal behiend it. In which "groove" of the slide is that supposed to sit? it's in the middle right now, i don't imagine it would be on the outermost one, but memory serves it may have been on the innermost bottom one. I guess the seal didn't like carb cleaner, and swelled up pretty good, but has shrunk now to about that size. If anyone has any suggestions on jetting, let me know, and if possible, if say I need a 70 pilot, what would that be in inches? I imagine I'll be drilling jets, not waiting to order them. Thanks guys! |
TM45 on alky- Hightower, this bud's for you!
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TM45 on alky- Hightower, this bud's for you!
TM-45 on alky, 60 pilot, 300 main, 95 needle middle clip, air screw 1 3/4 out. ported head, web 109's, 14/1 piston, full snorkle KN no box. Pump activated. this was tuned on a dyno. Larger jet holder and larger needle and seat.
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TM45 on alky- Hightower, this bud's for you!
Are the larger jet older, needle, and seat essential? does anyone know what a 60 pilot and a 300 main convert to in decimal? (so I can drill them)
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TM45 on alky- Hightower, this bud's for you!
from my calculations, a mikuni 300 main works out to be about 2.81 mm, or 0.110627 inches, and a 60 pilot works out to be 0.5624 mm or 0.02214 inches.
A 7/64 drill bit is 0.109375 inches, which works out to 2.7781 mm, which is approx a 296.4 mikiuni jet. I think thats about as close as I'll come to a true 300. |
TM45 on alky- Hightower, this bud's for you!
I believe that some have drilled out the jet holder with an 1/8 inch drill bit . Larger needle and seat might be required to allow more fuel in. I do still run my stock petcock and have not runout of fuel, even at the 1/8 mile drag strip.
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TM45 on alky- Hightower, this bud's for you!
I have done as explained, seems to run much better, but It still backfires a bit on deacceleration a bit, but that may be due to an exhaust leak. On startup when it's cold, I get back fiiring out the carb a bit, and it still has some bog when i jab the throttle. But much improved anyhow...thanks crazypainter for your help, and ero you as well. Any other tips would be helpful.
Thanks guys |
TM45 on alky- Hightower, this bud's for you!
welp buddy sorry but i sent you the biggest main jet i had for alcohol...it worked fine on my stock motor...but im glad you finally got it..
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TM45 on alky- Hightower, this bud's for you!
Oh damn, I thought I PM'ed you already, but guess not. Yeah, I got the main close now at a 330somethin, the pilot is an 86, but my needle is whacked out still. stumbled bad...
I'll send you a PM tomorrow, I had a few ?'s. Anything wierd with the choke you remember? seems siezed....Goodnight all. |
TM45 on alky- Hightower, this bud's for you!
how good is your alky?????? i was using some year old stuff and put in some fresh and picked up 2-3 bikes!!
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