JD CRANK HELP February 10, 2009 08:43AM
What cranks can I put in a JD404 block for more stroke? Any info. is appreciated.
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Re: JD CRANK HELP February 11, 2009 02:44AM
I don't think any other factory crank will fit. 404 & 466 are the same stroke & I don't think the new metric engine cranks will drop in. I don't know about the metric cranks for certain though.
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Re: JD CRANK HELP February 12, 2009 01:23PM
THANK YOU !!! for the info. I wasn't aware of the 466 having the same stroke. How much bore can be ran and keep water in the block?
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Re: JD CRANK HELP February 12, 2009 01:40PM
You can bore a 404 block so that it will accept 4 3/4 darton sleeves. I have done it. You might be able to go a little bigger but things are getting pretty thin at this point.
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Re: JD CRANK HELP February 12, 2009 01:50PM
How did you have your block bored? Was the block just straight bored and a groove cut in the sleeve? I've heard of people doing it this way, then using permatex in the groove to keep it from leaking, isn't this a cheap fix for such an expensive objective?
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Re: JD CRANK HELP February 12, 2009 01:58PM
I bore these blocks myself and I bore the bottom of the block straight about .001" smaller than the sleeve. When installing the sleeves, I put a little sealer around the bottom. The secret in my opinion is to have the press fit. If the sleeve is just a little loose in the bottom of the block, the slight movement during the running of the engine will cause the sealer to leak. I have never had one leak using this method.
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Re: JD CRANK HELP February 13, 2009 04:43AM
Thanks a bunch!! That gives me an idea of the potential the 404 has for cubes, was looking for about 600 N/A on gas or alky;THANKS!!
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