Flywheel question

Discussion in '40- & 55-Series Tech' started by SW20FJ40, Aug 1, 2005.

  1. SW20FJ40

    SW20FJ40

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    Are the flywheels for the 2f and f motor the same? Please some help me out with this question. Thanks
     
  2. Poser

    Poser Oh...Durka Durka Durka. s-Moderator Supporting Vendor

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    No they are not.


    The flywheel used with a F engine and a 3 spd or early four spd trannies was stepped by 14mm, the clutch was a three finger design. This step that I am talking about, referes to the area where the pressure plate is attached to the flywheel.



    The flywheel for the 2F was also stepped, (conversely however, the clutch disc wear area is higher in relation to the outer area that the pressure plate attaches to) but very minimally, (sorry I do not have the spec) But the dowels do need to be removed in order for it to be re-surfaced properly.


    You can, and I am using the heavier F flywheel on my 82-2F/420 combo, and have done so for years...


    Good luck!


    -Steve
     
  3. 65swb45

    65swb45 Elder Statesman Supporting Vendor

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    Which begs the question, why do you ask? :confused:
     
  4. Poser

    Poser Oh...Durka Durka Durka. s-Moderator Supporting Vendor

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    Probably writing a 'trivial persuit', Land Cruiser edition....


    :rolleyes:


    :beer:
     
  5. bad_religion_au

    bad_religion_au

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    hey the 3 fingered clutch design behind the F, does anyone know if is similar/ THE same as the 3 finger design behind the H motor... (NOT 2H)
     
  6. SW20FJ40

    SW20FJ40

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    Thanks for the help.
     
  7. Cruiserdrew

    Cruiserdrew On the way there SILVER Star

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    Ressurection of old thread---

    I recently came into posession of what appears to be an F flywheel with the high raised outer edge. If I run it on my project 3FE motor, do I need to use an F clutch, or can I use a 2F clutch which I already have??

    It would be the same question running it behind a 2F, so I know at least Poser knows the answer.

    Thanks!
     
  8. Hugh Heifer

    Hugh Heifer In Tenneginia!

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  9. e rock

    e rock

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    By "clutch" do you mean the friction disk? Or the pressure plate? Or both?

    You need to use the pressure plate that matches the flywheel. The friction disk doesn't matter. They're the same (size-wise at least).



    It's been a little while since I dealt with mine, but IIRC, the 4-speed clutch assembly is about 1/2" shorter overall, so it may require modifications to the throwout fork pivot in order to get a useable range of motion. I think I ended up just going back to the 3-speed clutch setup rather than dealing with the hassle of trying to make a 4-speed flywheel & pressure plate work in my 3-speed bellhousing.
     
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