Messages

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Tech Talk / Re: Kx 125 87 keeps cooking pistons please help

« on: August 15, 2014, 12:42:13 pm »

Thanks for everyone's input some good stuff on here I'll start trackin another carby on the side seems like 87 were a one of year 86&88 are both different carbies, it's running a 380 mj so ill try 400 mj and over to see if it comes good plug was a br8es thanks for the support

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Tech Talk / Re: Kx 125 87 keeps cooking pistons please help

« on: August 13, 2014, 05:16:20 pm »

Soo I dove a little deeper, the original carby is a mikuni 31 mm round and I have a mikuni 38 mm flat slide on it I've only had the bike 6 months and started racing in qld the past few races, last race was conondale classic and only got 2 laps in, got to the end of main straight when it lost power and stalled I didn't chop the throttle, just had a look at the colour of the plug and well there is no electrode left! Plug greyish white what's left of it, It has a stock expansion chamber, just got a pro circuit expansion chamber that I have yet to fit, pro circuit silencer, runs premium 98, the compression hasn't been changed as far as I am aware, pulled stator cover off and no fuel residue and rotor has no unusual play I will post pics of piston plug and barrel tomorrow thanks heaps for your input guys

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Tech Talk / Re: Kx 125 87 keeps cooking pistons please help

« on: August 12, 2014, 09:27:22 pm »

Thanks guys for the input yeah I changed the main jet in it to a larger 1 the first time it let go it mighten be enough may need to go larger again? It has a slightly larger then standard carby so uz could be on to something I'll check the Cdi out aswell thanks fellas it's been a hoot to ride except for that

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Tech Talk / Kx 125 87 keeps cooking pistons please help

« on: August 12, 2014, 08:04:10 pm »

Hey guys I've got a 87 kx 125 that keeps cooking the top end of the piston, it only happens when the bike is held wide open for long periods of time (like main straights) the piston ring is wedged into the piston and scoured the inlet and exhaust port at the top of the barrel, I run it 35:1 motul 800, liquid intelligence, it's got a new radiator and waterpump however it has a cast iron sleeve and I'm know they produce a little more heat but didn't think this would be a issue I'm going to get the barrel sent to servo to electro plate the sleeve but wanted to know if there is any underlying problems that I don't know about any info or help would be greatly appreciated thanks

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For Sale / Re: KX125 1987 Pro circuit pipe

« on: June 26, 2014, 09:19:14 pm »

Hey mick seen your old post was wondering if you still had that pro circuit pipe for the kx125 (87)?