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Crankshaft shells?

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Jimbo550:
Hi.  After stripping the engine down to thousands of parts im now inspecting everything and making a list of new parts to order.  Looking at the crankshaft shells they look a little scored and worn so thought i'd replace them while the motor is in bits.  I've measures the crankshaft and the journals seem good but not to sure on how to select the correct shells. I don't have an internal micrometer so measuring the case bolted together isn't really an option  I have ordered some plastigauge but this will be the first time using it so looking for some advice and helpfull tips.

Bitsa (Ralph Wright - RIP):
Hi
Somewhere on the crank journals you will have to use a magnifying glass etched on the fly wheels you will see 5 letters and you match these with the letters on the rear crankcases to Honda's list.I talked to a old racing Honda mechanic about this and he said not alot of difference between all of them fit the biggest and run in carefully.The etching wears with time and you might not see them.So far I have seen them after shit loads of swearing and going blind finally found them.
Hope this helps
Bitsa

Jimbo550:
Mmm ok thanks. I'll have a good look for the codes tomorrow and see what I can find. I noticed that David silver spares only stock one size which is the green colour code.

Bryanj:
Doesn't matter if you had an internal micrometer and how good you are with a micrometer you wouldn't be accurate enough to use the sizes in the manual! Honda used air gauges in production which are accurate to 0.001 mm. I always fitted black shells and ren them in for a couple of thousand miles, never had a problem

Jimbo550:
Thanks for the advice.    I'll have a good clean of the crank and cases today in order to find these letters and numbers. It would appear that David silver only stock green shells. Anybody know a source for other sizes/colours?

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