250-500cc WR 250 built thread

i started to take all parts off the frame, cleaned it and made a list of things which needs to be done...
I cleaned the frame with degreaser and a cloth- looks ok to me.
I m not spending money on a nice paint job- the frame stays like this.

When i took the triple clamps off i did not even think about grease beeing inside the head stock bearings- just remembered the swingarm bolt full of rust... BUT !
Because i was just in the mood i did test fit some parts to the frame.
This is how it turned out:

I spent some time in my Garage today...
i did split the cases and replaced the main bearings and the crankshaft- as the bike did run in hollands deep sand i thought these might be shot- and they were!

checked the gearbox- looks great

put everything back in its place

almost finished !


piston in tdc

lower positin- why is the exhaust port fully open but the transfer ports only about 2/3 ?

i hate problems- but the previous owner did a good job welding the cases- everything works fine

Triple Clamps are about to be fitted soon !

The Öhlins suspension fits perfectly into the triple clamps now

I ve done some work on the cylinder head to finish the engine work.

Cant wait to hear how this gals gunna respond to being thrashed!

Did you run it already?
Mine is apart also, big end failure. Mine had big squish number, like 1,8mm.
But has compression ratio of 8.17:1.
Dont know how much you took off the head?

nope- didnt run it yet- i thought the same when i was looking at the picture here... maybe i will take the head off again and double check.

Without any math, i think even if you took only 0.2mm off the head
you are in danger of detonation. Do not know wich engine you have, mine is 2003.
This because of not ideal squish number and higher compression ratio.

Easy way was to take the cc of head apart from cilinder/piston, shave it to squish 1mm
repeat proces of taking cc and then adjust the pocket to correct cc...
These are great bikes, have fun with it

Grt

I was busy building my wheels- EXcel Rims from a KTM, Hub from a YZ

Engine is waiting for the cylinder head...

Linkage doesnt look that bad- but they will get a good cleanup, swingarm bearings are shot.

Looking good!!!

I find this thread so very heart warming! Having done several rebuilds over the last decade it is great to see others doing the same thing! My local wrecker has a few dead husky wr's lying around the yard & I hate to see such brilliant pieces of engineering just sitting there rusting away. I should probably just buy them as a winter project! keep up the good work!

Yes Smokey, I agree you should acquire those wr's and bring them back to life. I personally like the wr's more . Good luck

Fittes some used fim pirellis including bib mousse today, replaced some bolts with new ones and was working on the swingarm.

Spent some time working on the swingarm bearings today.



Will get this welded



Also i got a new toy- i never worked with these before- will see how it turns out.

I got a cheapo tire changing stand recently and it's great! That and some XL spoons make tire changing so much easier

Picked up some of my parts from beeing sandblasted.

Went to pick up the swingarm today- looks a lot better now!


Also i recieved another gadget