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Technical Rod Bearing Question

Discussion in 'The Hokey Ass Message Board' started by bchctybob, Aug 27, 2025.

  1. RodStRace
    Joined: Dec 7, 2007
    Posts: 8,383

    RodStRace
    Member

    I'd think that with 16 cam lobes and only 8 rods, you aren't really looking at high level oiling, especially with the gaps at each side of the rod spraying 360 degrees and all the mist.
    I'd think that even if it was timed, it wouldn't be the difference between rare and common cam failure, especially considering the phase out of this feature and the time when flat tappets became a concern. Oils, fuels, manufacturing and springs have all changed by a lot between those two time periods. I've never thought about this before, so wonder if the 'timing' really points at the cam or was it a piston squirter? Thought provoking, indeed.

    Since the engine this question started with is the FE, is there a depository of old White Papers on Ford racing and such for these? I know the big three were very involved in research of every little thing heavily back then. Le Mans, NASCAR and other racing back then were all looking for any advantage.
     
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  2. patsurf
    Joined: Jan 18, 2018
    Posts: 2,435

    patsurf

    seems to me we need holman and moody to ck in here!
     
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  3. Fordors
    Joined: Sep 22, 2016
    Posts: 6,391

    Fordors
    Member

    No doubt the serious Ford guys remember the con rods Ford developed for their 427’s at Le Mans, beefed up forgings, cap screw bolts, bushings for the wrist pins and no oil squirt holes for the flat tappet cams they ran.
    24 hours of high RPM yet they survived and prevailed.
     
  4. bchctybob
    Joined: Sep 18, 2011
    Posts: 5,845

    bchctybob
    Member

    I’m kinda in the “it couldn’t hurt” camp considering that none of my engines see the lubrication mayhem in the crankcase that those 427s saw. Unlikely they will ever see 7000 rpm for 10 seconds, much less 24 hours.
    My current project engine (Pontiac) apparently didn’t have them so all’s well but there may be an FE project in my future, that is why I’m interested.
     
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  5. RodStRace
    Joined: Dec 7, 2007
    Posts: 8,383

    RodStRace
    Member

    Glad to tickle back. At first, I thought that's nuts, but it did provoke so I shared my thoughts.
    @Fordors Had the info to back up Ford's big bucks efforts in this engine, so it kind of backs up my guesses.
    As to how a serious high RPM long distance all out effort translates to a street engine, I'd again leave that to the guys that have worked with this engine for their whole lives. But it sure seems like the squirter was phased out for more bearing area, a solid face that couldn't peel, lift or allow pressure behind the bearing and that the squirt was either not beneficial or too much at high RPM.

    I can think of a few engines that have piston cooling. But is there any cam from an OE that has cam lobe squirters?
     
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