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Crank Swap

Discussion in 'Engine Building' started by Teamsprock, Jul 28, 2003.

  1. Teamsprock

    Teamsprock Junior Member

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    OK here is what I know, I have rods with length 5.630, and a crank with stroke 3.740, my stock block has rods with length 5.571 and a crank of 3.82, is it possible to switch the crank in from an H-series motor to an F-series, the reason I am wondering is I have the bearings, rods and pistons for the h-series crank but the bore is for a f-series. Anyone with any suggestion please help. The other advantage is that the h-series has bigger rod bearings so they will be better under pressure than the smaller F23 bearsing. What I want to do is use the rods which I have both for an H23 (5.571") or an H22(5.630") and they have a big end bore of 2.008 and the stock rods are 1.890. Any help would be great, Thanks, Jason.
     
  2. Teamsprock

    Teamsprock Junior Member

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    No one have any idea? Dang anyone got any suggestions, my stock block is now bored out so putting the stock internals in isn't an option, and I would have to get custom rods made if I have to get new ones. The problem I am having is that the rod journal is smaller than most other honda blocks and my rods I bought, anyone know if a crank shop can re-weld your crank and make the journal size bigger? Or got any other suggestions. Thanks for any help.
     
  3. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Swap in the H22... it'll probably be cheaper when all is said and done.
     
  4. Teamsprock

    Teamsprock Junior Member

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    Never mind, I found the specs and it won't work, or atleast not without some crazy work. Thanks
     
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