SOHC.co.uk Forums > CB350/400
Engine rebuild Parts list
Dolomite_:
Update.
My brown and green bearing sets arrived from impex. Took a while to get them on their end but only took 5 days to arrive from Japan which is crazy.
Pictures of plastigauge measurements here: https://imgur.com/a/WOXySvp
Ive noted which one is brown. They are all 7 thousandths or less, except one which I will measure again.
From looking back at the chart could I change the greens to browns or would that be too tight of a tolerance?
McCabe-Thiele (Ted):
My first observation is why are you looking at the Imperial Scale when all the manuals bearing tollerances are Metric.
Secondly what scale of Plasigauge are you using?
Presumably the other side of your Plastigauge will show the metric readings.
If you look at the scale the smaller the clearance the more the Plastigauge is compressed.
Check what the 7 reading is by looking at the Imperial range of the Plasigauge I doubt somehow it's 7 thousandths of an inch that sounds excessive my mains were around 38 Microns that's 1.49606 thou". The big ends were about 25 microns.
If I'm wrong someone will jump in.
Dolomite_:
Someone on this thread said green so I got 0.007″ to 0.020″ (0.175mm – 0.500mm).
I didn't realize there was a metric scale on the other side until I measured 4 of the bearings, I'll have another look. Can I just match the same 7 reading location on the metric scale?
McCabe-Thiele (Ted):
Yes.
The gauge I used is 0.001 to 0.003"
0.025 to 0.076 mm
Dolomite_:
Would it be worth getting a smaller gauge?
Where did you get it from? I can only find big boxes of it that are £35+
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