SOHC.co.uk Forums > CB500/550
CB550k1 US Import - UK registration
Oddjob:
Odd Ian as even the later 500 engines were changed to the single, longer type shaft but not pegged.
Clearly the fault didn’t rear it’s head in time for the change to be universal for the 550 engine.
Orcade-Ian:
Ken,
After reading yours and Bryan's posts, at first I just thought that the immaculate (inside) cam cover i've just tidied up was perhaps a NOS one from a 500 - anything is possible in 47 years and probably multiple owners. Then I did the check on CMSNL and found the change point and the fact that 8 shafts are needed.
Ian
Orcade-Ian:
Thinking outside the box - with a bit of careful depth mic measuring, perhaps I could make a couple of copper or aluminium discs to fit on the end of the outermost shafts to have the 'o ringed' pegs on the outer covers push against the shafts to prevent rotation. Returning to being sensible (rare, I know!) - I won't be riding up and down the M6 on a daily basis, so will probably not wear out the present setup!
Ian
Oddjob:
There was an alternative method of pegging the shafts Ian and that was to drill down under the circles where the pontefract cakes fitted and use a self tapper drilled into the shaft. Not ideal but better than nothing. Of course this was used on the longer type not the 4 shorter ones, the 500 changed the shafts to 4 long ones before the end of the run but they weren't pegged.
Orcade-Ian:
I might have a look to see if a Thackray washer is available to fit in the space available - maybe there is no space anyway.
Ian
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