WR LC 400 twin shocker - time for some TLC

the scooter has done 5 years since i gave it a big resto and it has done sterling work. only minor issues have cropped up over time and i had got away with using lots of original parts in the resto (cables etc) but they have probably got to their use by date. the grips are going gooeey and the knock issuing from the motor just cant be ignored. the chain tensioner is in a box worn out and the rear roller is a skateboard wheel bodgied up at an event.
So i launched into it...strip the seat and tank off, airfilter out and radiater hoses removed then the exhaust (only 1 rubber still holding) then i measured and looked and thought..."bugger!"
the head has to come off to get the pot off the studs... so popped that off, its clean as a whistle..how nice.

then i slipped the pot off the piston and removed that from the rod...all good.




cleaned stuff up and got the piston and bore measured...hmmm will need to go to 83mm to clean it up...(was the original bore!)


ran into a max piccy's issue..will re post with more pics

piston looks good just not enough of it around the outside...

Found a set of Boysen reeds in the cupboard...forgot about them, so slipped them on for reassembly time.


got a few small bearings and a set of clutch plates for inside the cover...will check the water pump bearings etc and sort the chain roller issues
fun and games!

Whatcha find out?

the bore is ready for a second oversize piston.... the piston is std.....enough said

It still seemed to propel itself forward very respectably at Yass!
You're probably lucky you didn't lose a piston skirt while rattling around in there.

i did expect a cracked skirt at the least so was suprized to see it intact

Enough said. +1

Just curious... what was the clearance?

83 had a tad of movement and 83.5 was good with enough to refresh it

Ha ha... yes, "one tad" is definitely out of spec!

have a new shiny sealing surface on the cylinder walls with a new woosy to go with it. slipped in a new set of clutch plates and replaced the two needle rollers on the idler and kicker shafts. awaiting a water pump seal "arf arf" and back together it will go. need a couple of exhaust rubber mount thingys so will have to troll a few bearing shops to find some. i did find that Honda 900 cb tailpiece rubbers are the same as the radiator mounting rubbers if anyone is looking for them...will get a few pics

love new parts...

must be a photo deal on cafe husk today...got 3 for the price of 1!!

better have bill check that hone job.

you might be surprized how good that thing rips with the fresh wossner!

I just thought you were building a WR1200.

"you might be surprized how good that thing rips with the fresh wossner!"

Ha Ha nice one... im gunna have to try to start the fu*cker now with real compression

got the slug installed in the bore..how good is that!!

ive lost control of this program....

i measured .15mm ring end gap..that sound ok?

Spot on Suprize. Should be good.

it lives, started second kick, frightened the crap out of me...no leaks (yet) runs like a clock..quick warm up and now cooling, will get another hot cold cycle then a couple of short runs tomorrow. all good

That sounds tight to me. 0.15mm is only .006". Did you possibly mean .015"?