SOHC.co.uk Forums > CB500/550

What letters are these on the webs of 1 & 2 cod rod codes?

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Sesman:
I’d also be checking for debris in the crank oil ways…though I’m sure you will be onto that too.

Rozabikes Tim:

--- Quote from: Orcade-Ian on January 16, 2023, 09:35:36 AM ---T
Graham, does anybody metal spray and re-grind bike cranks these days?

--- End quote ---

I used SEP in Kegworth years ago....

Sesman:
Ted, goes without saying, but the oil pump and galleries would benefit from close inspection too?

McCabe-Thiele (Ted):
There is certainly some ridging on a few of the main bearings that I can feel with my fingernail the best out of all 5 bearings is journal number 5.
Big ends are okay but not put a micro-meter on anything yet.
There was muck in the sump pick up screen filter & in the main oil gallery if that what it's called where the end caps sit.

Here are the mains shell pics.


https://flic.kr/p/2obPakN

https://flic.kr/p/2obLGKa

https://flic.kr/p/2obNXoy

https://flic.kr/p/2obNXoi

https://flic.kr/p/2obPajL

Trigger:

--- Quote from: Orcade-Ian on January 16, 2023, 09:35:36 AM ---Ted,
Before you spend any money on shells, I would get that crank measured, especially the right hand side (in your pic) main bearing journal - that centre ridge is very noticeable, even with my eyesight!  The big end journals don't look quite so bad but they have full width shells which can hide the truth.
A normal mic anvil might go on the worn section but even a carefully used digital vernier should pick that wear up.

Ian

Graham, does anybody metal spray and re-grind bike cranks these days?

--- End quote ---

It is not cost affective, as the price is per journal.
We used to metal spray and regrind CX500 cranks back to take green shells but, that is only one con rod journal . It was a common problem that was caused by the owner that CX cranks got fecked and it depended on the owner if he kept riding it to the extent of ovaled  the con rods and if they still kept riding, then the rod would snap and go through the gear box. Stopping the bike dead in slow traffic or throwing them down the tarmac at speed  ;)

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