G'Day you blokes i have posted this text before but have finally finished the bling on the old girl thanks to somme new plastics from Les at VMX Unlimited and some new stickers thanks to a mate with a laser cutter. So i thought i'd put it in again to go with the pic.
I have a 1981 KLX 250,
I have used a KZ 250 ( road bike ) barrel and head on the original bottom end.
The KZ barrel has 249cc stamped on it as opposed to 246cc which is stamped on the original KLX.
The head has a roller cam bearing on the sprocket end.
I have shaved 1mm off the head and machined the inlet port and inlet manifold to get an uninterrupted flow from the carb into the engine.
I had the original cam shaft re-machined by a bloke in Brisbane ( Ivan Tighe ). It now gives peak performance fairly high in the rev range.
I am still running the original carby, although i did race a KLX in the early 80's with a Delorto pumper on it.
The jets I am using are a 135 pilot and 150 main, large i know and it does run a little rich but has none of the usual KLX flat spots, and pulls hard all through the rev range.
I am running 1 1/2 inch exhaust. I have also addes an staintune muffler ( after the photo was taken ) which also improved the power right accross the rev range
I ride the bike in vinduros and ride it around the place a fair bit as it is road resisted.
The handeling is great, I had the rear shocks rebuilt by RAD in Brissy, the forks are standard with ATF oil and about 8 P.S.I. pressure.
The bike is still a little challenged in the power department but does get everything it's got down to the ground, which along with the handleing alows you to get around at a competeitive pace.
The biggest probem with riding the bike is that you get a lot of flys caught in you teeth cause you're smiling al the time.
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cheers Bretto.
ps T.A.R.T. stands for Tight Arse Racing Team.
