WRX400?

You can resleeve with the 400 LC sleeve and be able to bore to fit your worn 430 pistons after using up the 400 oversizes

Hopefully my luck is holding out, but I'm not confident! I think this will require some serious disassembly.
I may not get to strip it down for a day or two, but I'm busting to see what's going on inside too.....
Looking through the oil filler hole, all looks great, I suspect water damage or as you mentioned, lack of lubrication.

ol mate bought a twin shocker 15 years or so ago and the PO said "was running fine till i stopped at the lights"then it stalled and i couldn't start it..i think the kickstarter is jammed" .... that actually meant i forgot to put oil in the fuel and its totally seized"

Well some questions have been answered, first answer is that my luck ran out to a degree.
Cylinder came off very easily, here's why.......

The rest of the bad news is obvious.....

its a WRX for sure. has all the tell tale signs. DLS brake and swingarm mount brake strap. not slotted like 86WR.

Trial fit.

Some PO handywork!



It must have been too much trouble to weld the broken subframe tab, just use wire instead.

long term project there....give mick a call, he might have a bottom end he can sell you...although claude would have that running by the weekend....

Someone said you like challenges!

You still got room to throw money at it!

The good news is the cases are not rotted, the sleeves are tight, the transmission looks very good, as does the clutch, barely any wear on the plates or the actuator shaft.

I'll strip the cases of all bearings completely and probably bead blast them and then I need to assess the crank, before making a decision, it will depend on how it cleans up, if it looks good after blasting it will get a rod kit, if not then a replacement will be sourced.

Then there's the top end, it's had a sieze at some point as Surprize predicted, then it seems it was left in the weather.

The frame will be the easy part, make any weld repairs, sandblast and powdercoat.
The plastics will need some elbow grease but will look good when finished.

The rear shock has good damping but will get a rebuild anyway, the forks are in good condition below the triple clamps, might get them re-chromed anyway.

There are indications that this was competed on at some stage with paint marks on rims etc, and that it hasn't actually done a lot of miles, but it only takes one idiot to mess up a good bike, my guess is the last owner had no idea.
Tony.

Sounds like a plan so get busy and post all your work.

I'm bored lacing wheels

What front end is that?

It's from a late 90s ktm, 50mm Marzocchi.

Oh boy Tony....
Good luck buddy!
I have 3 spare cylinders with no rust, if your looking.

Steve

I may need to PM you Steve!

I'll probably need a decent crank as well if anyone has one.

good lord...yeah you will find that sometimes..no signs of mouse urine? hopefully the cases survived?

Sure, hit me up on FB my spare cranks have too much play on the rod.

the last owner had no idea....id say he did....took one look at the price of a mahle piston and a rod kit then after getting out of ICU....pushed it out the back.
Was like two months wages back then on what was a 1500 dollar bike! its frustrating that for ten mins work he could have buttoned the top end back down and left it tight.

at least you have a good stock to work with. the crank wheels may come up nice with a blast and a new rod kit will sort it out. the bore may be std and you just need a bore... im trying to be positive here....

No mouse urine, the cases looked good until I pressed the bearings out, then the mating surfaces just crumbled.
One thing I've never seen before, tide marks on the rod!
This engine has 2021 as the prefix, but according to the chart here http://www.husqvarna-parts.com/page/page/3895714.htm it should start with 2022, it says that 2021 is a 1972/73 CR450, obviously it's not though, anyone else here have a 400WRX with that prefix?
Tony.

check that case no carefully tony, sometimes the punching is very poor....tide marks... i love it.