Changing monoshock bushings

[Roro]

Hey guys
I want to replace the monoshock on my '82 XZ project with one off an early 98-02 Yamaha R1. The shock will fit fine, except the bolt/pin on the XZ are 12mm, vs 10mm on the R1.
Because of the XZ design I can't see a way to switch to a 10mm bolt / pin - is there a way to replace the bushings on the shock with a different size? They are firmly fixed in there - and where would I get replacements?

Any ideas or comments gratefully accepted.

 

[CCRider]

Bushings in the XZ shock mount holes?

CC

 

[Roro]

Nice idea, but they would only be 1mm thick - I don't think I'd be happy with that

 

[hillsy]

What about welding the holes closed on the XZ shock mounts and drilling them back out to 10mm?

 

[Doctor Kebab]

Why would a 1mm bushing / shim be so wrong? Not sure I get you

 

[neevo]

What about drilling the shock out to 12mm?

 

[hillsy]

Why would a 1mm bushing / shim be so wrong? Not sure I get you

The bushing would have to go on the frame / swingarm clevis, not the shock bushing. So, we are talking about 2 shims that would only be a few mm wide. Probably not doable / practical.

 

[Doctor Kebab]

Yes, I follow you. Cheers. No chance of small 'top hats' making it work?

 

[Roro]

Thanks for the comments guys,

The top hat got me thinking - for the top end I can drill out the mount from 12 to 16mm and so put in a top hat of decent thickness

The bottom end is still an issue - it's a 12mm pin that sits in a tunnel on the frame - there's no drilling that out