Maintenance & Technical > KX250 / KX125
90 KX250 rebuild
SOHC:
Had to have some welding done on the inner clutch cover and on the engine case where the clutch cable mounts as it was broken off, then I beet blasted the engine cases and fitted all new bearings, seals etc,
I had to find a new crankshaft as someone had put in KDX250 flywheels witch were junk anyway, I now have a proper crank but it needs a new rod kit.
Thats about it for now, my cylinder is off being replated and I am looking for that clutch leaver that goes into the case. I would say alot of the damage on this bike was done form water blasting and steam cleaning.
ecdeyzel:
Awesome build so-far, SOHC. The forks mission sounded like a royal pain in the @$$. Love to see the progress.
Ed
LukeG:
I ended up getting forks from the UK, there must have been something dodgy going on with the gold forks in 1990 because mine were corroded and cracking apart like yours. I am curious how the chinese radiators fit up as I am yet to buy any for mine. Keep up the good work and the updates as I know I haven't updated my build thread in ages.
SOHC:
The radiators did need tweaking as the mounts for the guards and the mounts to the frame were off, I can see where one pin hole in a weld has been penned over at the factory.
I think with the forks its the anodizing when it gets a chip water can get under it and get trapped and it fizzes away, I polished it all off some blue forks and I will just hit them with the silicon spray, they did have a couple spots that I had to grind out.
I saw a Yamaha yz 250 that had the most rotten forks ever, they had swelled up to about 25% more of there orinagle size.
LukeG:
My forks were nearly that bad. The aluminium has swollen and flaked like cast iron does. I'll post a picture tomorrow to show you.
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