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Military F-head

Discussion in 'Early CJ5 and CJ6 Tech' started by Kory S, Oct 4, 2021.

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  1. Kory S

    Kory S New Member

    Just purchased a so called military f head engine. Can someone ID differences between a regular and a military version? It has a 1 3/4” crank bolt and cast crank weights instead of bolted and welded crank weights.

    Thanks
     
    Kory S, Oct 4, 2021
    #1
  2. PeteL

    PeteL If it wasn't for physics, and law enforcement... 2024 Sponsor 2023 Sponsor 2022 Sponsor

    For a start, different carb. Has a engine lifting loop over the center of the valve cover. Double groove crank pulley. Massive bulletproof fuel/vacuum pump with priming lever. Waterproof 24volt distributor. Bellhouse has threaded drain plug for u/w operation. Etc etc. But most of those identifiers are bolt-on.

    Possibly "MD" engine number prefix may be an indicator, if the block hasn't been milled.
     
    Last edited: Oct 4, 2021
    PeteL, Oct 4, 2021
    #2