Estimated time to Swap out a frame, K75

[ronbuell]

Just like it says........
How much time do I need to estimate to swap out the powertrain into another frame?
Looks easier on this bike than say a Japaneese or Harley.  My last engine pull was a single cylinder this spring, but I have done a '77 KZ900 in a day with a tranny change out too.

[wmax351]

Its pretty easy. I rebuilt a craigslist engine over a week or so, then put it in within 3 days maybe, counting lots of perfectionism cleaning things. The engine drops out from under the frame, makes it much simpler. You can actually remove the whole power unit by lifting the frame up off of the engine, transmission, and final drive.


Take a look at the factory manual for the factory description, and check out the haynes and others for more info.


Its a lot easier than the KZ900 I would think.

[ronbuell]

Thanks.  I did find a youtube showing some guys lifting the frame off the drive unit after unbolting it.  guess they had a few wires to unhook as well.

[Grim]

The harness and brake plumbing is the time consuming part. If the other frame is bare and needs forks, plumbing and wiring that's going to take a LOT more time then just swapping a motor.

While you have it apart do yourself a favor and do a clutch spline lube. 

One thing to be careful of is the frame sometimes has shims where it bolts to the motor. Do some research on this. If you just torque it down to take out any gaps it's possible that the head tube may not end up staight up and give some weird handling issues.

[ronbuell]

Thanks guys.
I'll watch out for the shims too.