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As with anything a-series the key is in the condition.

If you have a good 121505 crank, as long as the filett radius where the crank journal joins the crank web has a nice gentle transition and the rest of it is in good condition I would certainly use it. Revs kill cranks, and the power/revs you propose will not do it any harm.

My preference would be to wedge/balance and heat treat if it needs a re-grind, if not just balance.

I have rejected a few cam6232 cranks for engines because of poor factory machining. Even had the opportunity to buy a cheap brand new one a couple of years ago for a good price and that was wrong too!



Edited by minimole23 on 15th May, 2024.

On 7th Oct, 2010 5haneJ said:
yeah I gave it all a good prodding

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