BMW gearboxes

Ey,
I wasn't the only one to shit myself after a near miss last week. Last
night the K100's gearbox decided to shit itself as well. Jammed gears
heading up King Street in Melbourne's CBD, and when I finally worked
whatever it was loose, a sickening crunching noise.
Anyone know of anywhere to source secondhand BMW bits that doesn't
mind sending the parts COD?
Werd to RACV Motorcycle Extra Care who organised a tow for the bike
the 107km home. Total cost: nix.
- sanbar

 

Ahhh Sanbar,

I hope you are sitting down with a cold beer in your hand.

I have a 86 K100RS whose gearbox did the same thing in 93. As soon as I
snicked the box into second it would jump straight out. Problem was the
teeth were worn off second and fourth gear didn't look any better, plus the
bearings and selector forks needed replacing. My bike at that stage had done
around the 230.000K's. The parts alone were around the $2000.00 mark. Add in
labor charges and it came out close to the $2400.00 mark. You maybe able to
source one from a wrecker somewhere.
"Get that bloody K back on the road."

SimonL.

 

Uh oh

No ...

Ouch. Mine's only done 103k km. It was inbound second gear dogs that
went in my box. I'd pulled a dog out of it about 25,000km ago when I
changed the sump oil, and stripping down the gearbox showed that
another dog had been floating around in there for a very long time,
chewing into the bell housing. The third one went on Thursday and
sheared off the selector arm on one of the Y-shaped gear selectors.
The gear teeth are not too bad, but I'm up for a couple of replacement
selectors, a barrel race bearing that was hit, and a couple of gears.
Oh, and a clutch plate and diaphragm spring for the hell of it while
the bell housing is off. And the needle bearings in the drive shaft.

I'm not looking any harder than that.

I've found a gearbox off a Jap import bike that's done <30k km. Any
gotchas with a grey import box?

I'm trying.

- sanbar

 

I've found a gearbox off a Jap import bike that's done <30k km. Any

Just take a small torch with you. Take out the oil filler plug for the
gearbox and shine the torch inside and see if there is any surface rust, if
there is any give that gearbox a big miss.
Even with a low K jap import gearbox it would certainly work out a lot
cheaper in the long run, even money you'll get at least 100.000K's out of
the import gearbox.

I will be up for another gearbox in about 50 to 80.000K's, plus I will be
changing the the motor over for either a standard low mileage 2 valve motor
or going the whole hog and getting a K1100RS 4 valve motor with K1 cams
which is good for about 110 HP.

SimonL.

 

w00t! that's what I wanted to hear.
- sanbar

 

Discount Motorcycle Wreckers in Coburg ...

Cheers
Moike
in drier WA