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Author Topic: 2001 TM RAcing 125mx Piston meltdown  (Read 9420 times)

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Offline 2T Institute

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2001 TM RAcing 125mx Piston meltdown
« Reply #30 on: July 18, 2012, 11:24:37 AM »
Is that on your 300 or a 125?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline TotalNZ

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2001 TM RAcing 125mx Piston meltdown
« Reply #31 on: July 18, 2012, 12:15:54 PM »
300, 0.7 be bit tight for a 300 i'm picking
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline 2T Institute

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2001 TM RAcing 125mx Piston meltdown
« Reply #32 on: July 18, 2012, 12:18:31 PM »
1.1 would be ideal unless you wanted to narrow the squish width or you wanted a lot more bottom end grunt
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline thmike

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2001 TM RAcing 125mx Piston meltdown
« Reply #33 on: July 19, 2012, 05:16:41 AM »
what kind of info do i need to get my head rechambered...2t institute..are you in the states?
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline 2T Institute

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2001 TM RAcing 125mx Piston meltdown
« Reply #34 on: July 19, 2012, 11:50:07 AM »
No I'm in Australia, but depending on where you are I could recommend a few people over there.
Usualy I work on
RPM, rod length,bore,stroke, head volume, squish width and clearence gives a Maximum Squish Velocity (MSV)
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline thmike

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2001 TM RAcing 125mx Piston meltdown
« Reply #35 on: July 19, 2012, 03:40:23 PM »
recommend away! lol. I just would like it to run good on pump! 93 octane..
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline SachsGS

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2001 TM RAcing 125mx Piston meltdown
« Reply #36 on: July 19, 2012, 05:16:41 PM »
Hey thmike, have you done a compression test on the TM? I'm curious what the actual readings are, I recall some 90's CR Hondas reading upwards of 200 PSI.
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline thmike

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2001 TM RAcing 125mx Piston meltdown
« Reply #37 on: July 20, 2012, 02:27:30 AM »
Quote from: SachsGS on July 20, 2012, 12:16:41 AM
Hey thmike, have you done a compression test on the TM? I'm curious what the actual readings are, I recall some 90's CR Hondas reading upwards of 200 PSI.

I have not. I just put the wossner piston in it and went with thicker base gaskets to see if I can get it to run pump without doing head mods. Yes I know I will be losing some bottom end but I would rather loose some bottom then having to run race gas all the time. If its so bad I can't stand riding it I will send the head out to get rechambered.

The bike started right away. The motor sounds a lot smoother. I think I had piston slap before so I went with a 53.97 vs the 53.95 that was in it. Only did one heat cycle tonight. Will continue some more tomorrow and retorque some bolts. I'll see if i can get my hands on a compression tester. Don't currently have one at the moment!
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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Offline thmike

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2001 TM RAcing 125mx Piston meltdown
« Reply #38 on: July 20, 2012, 06:41:46 PM »
hey here is a short video of the bike before it fried the piston.
http://contour.com/stories/2001-tm-racing
« Last Edit: December 31, 1969, 04:00:00 PM by ' »
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