SOHC.co.uk Forums > CB350/400
400/4 main bearing shells
Matt_Harrington:
Just had a look at the shells and no markings, alas. My spare engine (which also has some issues) has the following marked on the lower case 'CCCBC'
The crank has the following markings:
Journal 1 = 2A Conrod = D3
Journal 2 = 1A Conrod = D2
Journal 3 = 1A Conrod = D1
Journal 4 = 1A Conrod = D1
I'm not sure I'm any the wiser! ;)
Trigger:
--- Quote from: Matt_Harrington on June 22, 2023, 05:29:46 PM ---Just had a look at the shells and no markings, alas. My spare engine (which also has some issues) has the following marked on the lower case 'CCCBC'
The crank has the following markings:
Journal 1 = 2A Conrod = D3
Journal 2 = 1A Conrod = D2
Journal 3 = 1A Conrod = D1
Journal 4 = 1A Conrod = D1
I'm not sure I'm any the wiser! ;)
--- End quote ---
The markings and the data is for new parts and not for a worn crank. Take it to a engineer to be measured up ;)
Matt_Harrington:
Trig, I have measured up the crank (my expensive digital micrometer goes to 3 decimal places). What I'm tring to resolve is whether to mic up the casing bores or whether I can use the the stamped numbers on the crankcase.
Trigger:
--- Quote from: Matt_Harrington on June 22, 2023, 06:09:10 PM ---Trig, I have measured up the crank (my expensive digital micrometer goes to 3 decimal places). What I'm tring to resolve is whether to mic up the casing bores or whether I can use the the stamped numbers on the crankcase.
--- End quote ---
I have only had casing journal out when the engine has sized and the shells have spun in the journal, you can see this if the tabs are damaged and the back of the shells are scored. If this has not happened, the case journals have always been good to go ;)
McCabe-Thiele (Ted):
I am not 100% sure - 400 mains shells for casing coded C are going to be most likely Brown or Black. Brown will be easier to find than Black.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version