82 430 XC ?

I have an 82 XC 430 with a broken left center case, does anyone know if the 250 cases of the same year will work?

Thanks for the info. Very helpful

Thanks again, huskydogg, will the later year 430/500 water cooled cases work?

Thanks again,what about the 400? Also i read on here about upgrading to newer primarary/kick gears ect, any info would be greatly appriciated. Again THANKS

The 400 of the vintage we are discussing here is the same as the 430 and 500. I didn't read above about the diameter of the swing arm pivot being different dual shock vs mono shock, you could possibly find a liquid cooled 400 with the 12 mm bolt hole but otherwise a liquid cooled one would have a larger hole in the insert and probably the hole the insert goes into. I don't know exactly when the bolts and flanges were added to the intermediate shaft but one could wade through the parts sheets and figure it out. Well maybe the replacement cases came with the shaft and bolts installed. If you go to 87-88 things change a bit at the sprocket area.

As far as the primary gearing I am not so sure I like the later 430 primary gearing it makes it harder to start, at least with a fresh piston the earlier air cooled 430 I have apart has the same primary reduction as an xc 500 which means less rotation per kick, more leverage and easier to kick through. If the gear on the back of the clutch is good I would use it. You must change the clutch basket and the intermediate gear and the kick gear the teeth are a little fewer and larger. Then you need a gear on the crank to match the one on the clutch which might be what you have if you got an xc 500 clutch set up(might) but otherwise you would need change to that just from what I have seen.

If yours is broken like in the pictures the timing should be considered, I think I am set about two thirds advanced by degree from what the specs call for and it very rarely kicks back like that. I did finally try the stobe light to see if the pin was accurate and decided it was within the error of measurement but the pin might have resulted in one degree more advanced than the marks I made with a dial indicator in the spark plug hole but a spark plug hole exactly in the middle.

Fran

Thanks great info.

Got a set of 84 WR 400 cases on the way, Thanks everyone for all the great info