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watson's picture
VBMWMO #9286
Joined: 05/15/2017
Posts: 58

We are working on a very sad 71 R75/5 that we want to remake as a shop bike and we are considering an engine swap. The engine in the bike needs a lot of work and a replacing it with something newer sounds interesting. Can anyone tell me if something like an R90 will fit into the R75 frame and mate up with the drive line?

Thanks, Doc

MikeL46's picture
VBMWMO #9300
Joined: 01/01/2016
Posts: 58
No problem. But, I would use

No problem. But, I would use the later 5 speed at the same time.



67 R50/2 w/R100 engine/trans and Ural Sidecar
69 R60/2 76 R90S 78 R100RS
70 Triumph w/Spirit Eagle Sidecar

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