Forum bmwbike.com

I have located a R100/7 camshaft and would like to know if it will interchange into my R90/6 1976 ???
I know the oil pump gear has a keyway on a /6 and on the /7 it has flats ...but plan on using a new oil gear anyway.
Any other problems ??? Ideas ??
Thanks
Joel Rapose

The catalog here says:
Cam shaft R75/6; R90/6; R90S; R80 - R100RT <1984

So it appears that the same cam will fit everything from R75/6 through the R100/7 to the early 1980s R100RT. But I have no firsthand knowledge of this.