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1976 CB550F1 (what have I let myself in for) Project
eight0:
well, the condition of the engine lives up to the threads title I guess.
I've ordered another crank from DK which also has the rods with it. You never know, the bearings on those rods might be re-usable.
Without sending the cases and crank to a machine shop to get measures for clearance, my plan is to put all the old brown bearings in to see how off they are using plasitguage and go from there.
Trigger:
You can not go by crank markings. The Honda Manuel is reference to new parts only and not to something that has done 50,000 to 80,000 miles with wear and tear ;)
eight0:
The 'new' crank arrived. Much easier to see the markings.
From left to right. 21112
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My case is BBAAA so with the new crank it should be brown, green, yellow, yellow, green.
I put the crank in with all the old brown bearings and the plasitgauge measured .51 .51 .51 .38 .51
I put a new brown bearing on just to see if there is much difference.
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Maybe I'm best off just installing browns all round. What do you think?
eight0:
Thanks Ken, that might work if you have that many yellows!
No, not corrosion, just some dirt. I hadn't cleaned it yet when I took those pics.
Yeah rod bearings all need replacing.
They are all marked 1 on the rod and BAAA on the crank so I make that green, and 3x yellow.
I bought all browns!
Bryanj:
Thats cos people like me just fitted black shells and ran the in carefull Ken
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