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CB350F Restoration by royhall (NOW FINISHED)

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Bryanj:
The only supplier I have ever had success with for obsolete parts is WesternHills Honda. You will need to email them with a part number to see if they can get or even have them. Few years back they got me a couple of the difficult 500 selector and didn't charge over the top either

ColCB400 4:
I have had this problem recently with my 400 four.
Searched for days for 4No main bearing yellow shells, read some stuff and some folks seemed to think the tolerances were so fine it didn't matter. An engineer supplier I use told me it wont matter, he was totally sure and has worked on engine set ups for years.

I resigned myself to using a shell size down making the journal effectively loose, bought the shells.

Eventually found a supplier in the states with the shells I needed, bought and fitted them.
I confess I have never seen black or blue for sale but maybe brown.

I have 4 green ones if ya want em part number 13317-333-003.

btw nice project

royhall:
Couldn't agree with you more Col. Don't really trust the numbers and letters thing. I spent the first 20 years of my working life as a Toolmaker (precision engineer) and have virtually every precision measuring device ever invented. So tomorrow am going to measure the casing bores and crankshaft journals to the 1/10th thou then make my own decision on the shells. Honda used production (fast) techniques to measure these parameters 43 years ago, and without sounding like a clever dick, I can carefully measure these components better than they did. Will then compare my results to there's and see where I am then. I am willing to bet I find errors!!

Bryanj:
Honda used air gauges on the line mate, incredibly accurate

royhall:
Good point Bryan. But a good quality micrometer and a gentle hand are also incredibly accurate, and my measurements are not agreeing with there's. 43 Years of use may have made some difference. Going to have to go with the actual measurements not what they were historically as two of the crank numbers are so light and hard to see its really a best guess. Then the black shells are unobtainable anyway. Will do the sums tomorrow and see what comes out. They may end up tallying with Honda's numbers anyway? Cheers Roy.

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