JohnSch Posted March 11 Share Posted March 11 G’day rebuilding my tf125 motor due to scoring in the bore, am wanting to get some more go out of the old girl, wondering if I should just do a 0.5, and take of as little material as possible, or go balls to the wall and slap a 2mm in there?? also wondering what else could be done to get the old two banger running around a little faster?? Quote Link to comment Share on other sites More sharing options...
GregT Posted March 11 Share Posted March 11 You've opened Pandora's box here. Once you get into 2 stroke tuning you can go down some serious wormholes. Find A Graham Bell's 2 stroke tuning on line - there are free sites with it. Download it and read it. It's basic by current standards but it'll do you. Rebore as small as possible. Leaves some life in the barrel - and you aren't moving port edges very much. 4 1 Quote Link to comment Share on other sites More sharing options...
cubastreet Posted March 12 Share Posted March 12 The two stroke tuner's handbook by Gordon Jennings is a good read too. It's pretty addictive. Carburation gets pretty tricky if you want to be able to pootle around slow and also have a good top end. Quote Link to comment Share on other sites More sharing options...
HighLUX Posted March 12 Share Posted March 12 What have you done to your TF @SOHC 1 Quote Link to comment Share on other sites More sharing options...
anglia4 Posted March 12 Share Posted March 12 I made one rev to the moon, but I never actually got it making decent power, and the vibrations kept wrecking shit. 2 2 Quote Link to comment Share on other sites More sharing options...
SOHC Posted March 13 Share Posted March 13 All I did to mine was bore it 1mm as it was very scored and raidous the bottom of the transfer ports on the cylinder sleeve bottom, gut the inside of the expansion chamber and rejet the carb, now it will get the front wheel up in 2nd and 3rd gear with a twist of the trottel, people fit a kawasaki KX 80 ignition system witch makes them rev more, I wouldnt touch the cylinder head as I am getting detonation on the over run with stock squish, like Greg T says it will get difficult fast. I am trying to work out if the TS125 cylinder is any better than the TF, the part number is almost the same, TF has a low 1st gear, and slightly different crank caces but the gearbox will interchange Quote Link to comment Share on other sites More sharing options...
HighLUX Posted March 13 Share Posted March 13 I think iv compared TF vs TS barrel before and maybe the port timing was a bit different on the TS Quote Link to comment Share on other sites More sharing options...
SOHC Posted March 27 Share Posted March 27 I can make you a port map from something I have here but you would need a sleve with no ports to start with as it needs an exhaust port bridge Quote Link to comment Share on other sites More sharing options...
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