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

I am looking at a well used R60/5 that has a few mods and I would like to hear from this group on a few things. First, were these bikes ever sold in yellow with black pinstripe? This bike is yellow and I am guessing that it is non-standard but actually looks very nice. Second, the engine has been rebuilt and 900 cylinders and carbs were used. Is the bottom end on an R60 good for that much of a change and would that result in a loss of the smooth quality that makes them desirable?

Thanks,

Doc

schrader7032
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VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6540
Here are a couple of pages

Here are a couple of pages shows the colors that were available at the time...I don't see a yellow unless BMW called it something else. Curry?

http://w6rec.com/wp-content/uploads/2017/07/9-78-17NS-Page1.jpg

http://w6rec.com/wp-content/uploads/2017/07/9-78-17NS-Page2.jpg

The 600cc series had a mild cam profile installed and the result was a tendency to ping unless thing were in good order. The R60/5 would have had an engine case opening of 97mm and only the early 900cc cylinders could be used on the mod...unless the engine case was modified by increasing the opening to 99mm which was what the '76 models got.

The best was to bump to a 900cc engine would have been to also change out the camshaft. If that was not done, I would suspect that the performance would be compromised.

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

watson
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VBMWMO #9286
Joined: 05/15/2017
Posts: 58
Thanks, the modifications

Thanks, the modifications were done by a BMW specialist and this was his personal bike. I will check to see if the cam was updated when the other work was done. I am not interested in a hot rod, but others here have commented that the R60/5 needs a bit of help. My first choice would be an R75/5, but this bike is offered at a good price and it somehow interests me.

Doc

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