Topic: Swingarm question...do the frame bushings need replaced?

[Jerry E.]

Can't find any info on this, any help is appreciated. I have a 1973 K3 that I plan on rebuilding the swingarm, but I can find no info on the bushings that the arm mounts to in the frame itself. Do these bushing wear out/need replaced, or is it only the swingarm bushings? If so, anyone know if these are still avalable? Where from?

[MCRider]

There are no bushings in the frame. The layout is such that the bolt tightens down and does not turn in the frame, so no need for bushings.  The endcaps are pinned to the collar and the frame by the squeezing of the bolt. Inside the endcaps are thrust washers, or the "T" top of the bushing if you have those types.  The swingarm rotates around the collar on its bushings.

If you have time, I suggest researching HondaMan's technique and service for swingarm bushings. Can't be beat. But you can do it yourself if so inclined.

[MCRider]

This link for HondaMan:
http://forums.sohc4.net/index.php?topic=58828.0

[Jerry E.]

Thanks, that answers my question.  I imagine I should keep the new powdercoating out of the frame bolt holes for the swingarm. I do plan on having Hondaman do my swingarm rebuild, also my headwork/carbs. His book has been very helpful, as this is my first motorcycle rebuild.

[MCRider]

Thanks, that answers my question.  I imagine I should keep the new powdercoating out of the frame bolt holes for the swingarm. I do plan on having Hondaman do my swingarm rebuild, also my headwork/carbs. His book has been very helpful, as this is my first motorcycle rebuild.

Yes, the swingarm bolt holes, motormounts holes, etc should be plugged. A good powdercoaterwill know that.