SOHC.co.uk Forums > CB350/400

Another bearing journal topic

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waffey:
Hi, had a go at measuring the clearance on one journal using plastic gauge (grey). There's a first time for everything. Not got my hands dirty since I got rid of my MKII escort some 25 years ago

The bearing looks shot but the journal in tolerance I think according to the manual.

K2-K6:
Is the maximum clearance 0.08mm ? If so I'd agree with your analysis, that journal is ok for dimension.

The shells look quite scored (looks like very poor oil condition at some point) presumably the journal is still smooth?

Bryanj:
Def dirty oil, would still run as clearance is ok but your mind will be nagging you on condition, in a workshop condition i would advise it will run but if mine i would change them

TrickyMicky:
I am not an engineer, but sometimes you have to take a step back and look at the whole picture, i.e:-  To reach the point that you have, a total stripdown which takes more than 5 minutes, would you honestly rebuild it with the existing shells and run the risk of having to tear it all apart again? It's a bit more involved than chancing your arm with using a spark plug for a second time.
  Without wanting to harp on it, many years ago I worked part time in a car accessory shop, this was in the days of 'kerbside mechanics inc'.  The number of times that customers would purchase a new clutch plate and cover but wouldn't bother with the release bearing! There's only so many times that you want to be lying on your back with a cast iron gearbox resting on your ribs.
  You only want to fix it once mate. Stay Safe. Michael.

K2-K6:
I didn't feel the OP was intending to re-use the shells,  more gaining a second opinion of the journal and dimensions are ok to go again with new bearings installed.

I know what you mean about the clutch TrickyMicky,  once got a car engine going for someone on the bench as he was going to install it in a modified vehicle, advised him to change the camshaft drive chain and gears as it would be about 20 min job (plastic teeth on cam wheel) which he avoided. Within a year it failed and bent alot of the valve gear  ::)

I didn't remind him of that at all  ;D

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