SOHC.co.uk Forums > CB350/400
Engine rebuild Parts list
Bryanj:
The Honda manual should be in Ashs dropbox and the sizes are in there
McCabe-Thiele (Ted):
The sizes & tables are in the 400 Parts Manual in Aladin's Cave drop down to the 400 section it will open up and you can download the 400 Parts Manual fig ref 36-45 for mains & conrods
Dolomite_:
Im assuming its the 35 and 32 on the graph. What measurement is that?
I've never really used thousandths of an inch before.
https://imgur.com/a/RvqynPu
McCabe-Thiele (Ted):
--- Quote from: Dolomite_ on March 07, 2024, 08:05:18 AM ---Im assuming its the 35 and 32 on the graph. What measurement is that?
I've never really used thousandths of an inch before.
https://imgur.com/a/RvqynPu
--- End quote ---
Hope I'm not being to basic this is the just the Mains table & how you use it:-
You are not using Imperial but Metric so the top of of the table is the crank mains diameter expressed in mm.
To find the range you need to add the two plus figures to the number to obtain the range for that mains journal.
On the mains the left side letters in the table are the casing codes.
So for your crank journal number 1 with the casing code B the range for that journal is 35.008 to 35.016 mm (hence need for acuracy) The mains journal diameter range is 32.00 to 32.010 when it was new for that crank code if it's visible.
You then move across the table for the crank web number if yours is 1 then that column below contains the possibe shell colours. To the right of your particuar colour column is the clearance gap between the shell & the journal.
This is the gap you measure with the Plastigauge a small gap is tight a bigger one is looser so as to speak, so 20-46 is what you are measuring by compression of the Plastigauge. You must use the right range of Plasigauge - be careful to go by the range not the colour of the material when you buy Plastigauge.
The table for the conrods is similar except the axis layout as you will see are different.
Bryanj:
If you never used thousanths you are knackered as you need to measure to a tenth of one
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