3500 GT I6 Crankshaft Pulley | FerrariChat
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3500 GT I6 Crankshaft Pulley

Discussion in 'Maserati' started by redfred84, Sep 27, 2023.

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  1. redfred84

    redfred84 Formula Junior

    Dec 24, 2010
    734
    SF Bay Area, USA
    #1 redfred84, Sep 27, 2023
    After adjusting the valves on my '61 3500 #101 1512, I noticed that the front crank pulley, or harmonic dampner seems loose on the snout of the crankshaft. I can see through an access hole on the pulley that the castle nut, and split/cotter pin are secure, yet the pulley has some slop, as if the key way was worn. I actually have a spare dampner, but I believe it to be from a newer, fuel injected car, as it has a slightly different pulley hub, and half of is appears to be rubber, or at least rubber coated.
    I'm wondering if these are interchangable? I'm currently not running the front mounted scavenger oil pump, nor a thermostat for that matter. Been this way for many miles, and many years! But I'm wondering if I can just swap out these harmonic dampners, and hopefully a new key will solve this problem? If so, I'd like to at least get the spare dampner rebuilt, so there isn't any down time. Any suggestions on where to get that done?

    Many Thanks, RF.
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  2. staatsof

    staatsof Nine Time F1 World Champ
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    #2 staatsof, Sep 27, 2023
    Contact Gene O'Gorman. He's on here but not always watching.
     
  3. redfred84

    redfred84 Formula Junior

    Dec 24, 2010
    734
    SF Bay Area, USA
    #3 redfred84, Nov 24, 2023
    I'm still in the dark on this. Any ideas, or solutions out there?

    Merry Motoring, RF.
     
  4. eogorman

    eogorman Formula Junior

    May 10, 2005
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    Eugene O'Gorman
    #4 eogorman, Dec 27, 2023
    I think either would work. But which ever you use should be rebuilt so it really works as a crankshaft damper. The rubber needs to be new or replaced with a modern elastomer. There should be several people in the bay area that can do this for you. Look at hot rod shops
     
  5. JCR

    JCR F1 World Champ
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    #5 JCR, Dec 27, 2023
    3500 GT likes this.
  6. 3500 GT

    3500 GT Formula 3

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    #6 3500 GT, Feb 26, 2024
    There are two on eBay.....
     
  7. thecarnut

    thecarnut F1 Rookie
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    #7 thecarnut, Oct 30, 2024
    I only saw on eBay (in Germany) for about $1,000 including shipping. Using the Damper Doctor seems to be the least expensive solution and that way I will know the part will fit when I get it back. We have all experienced that new parts are sometimes just different enough to make fitting really hard or impossible.

    Ivan
     
  8. thecarnut

    thecarnut F1 Rookie
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    #8 thecarnut, Oct 30, 2024
  9. 3500 GT

    3500 GT Formula 3

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    #9 3500 GT, Oct 31, 2024
    I had mine repaired and then rebuilt...it cost about $200 USD, FYI.
     
  10. redfred84

    redfred84 Formula Junior

    Dec 24, 2010
    734
    SF Bay Area, USA
    #10 redfred84, Nov 1, 2024
    So where did you get yours repaired, and rebuilt for $200 US, and when please?
     
  11. 3500 GT

    3500 GT Formula 3

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    #11 3500 GT, Nov 2, 2024
    It was about 10 years ago if I am remembering it correctly.

    I used "Dale Manufacturing Company" in Salem Oregon. Their specialty was Harmonic Ballancer Rebuilding. Found them in Hemming Motor News.

    Hope this helps. Image Unavailable, Please Login
     
  12. redfred84

    redfred84 Formula Junior

    Dec 24, 2010
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    #12 redfred84, Nov 4, 2024
    Looks like Dale has retired, and closed up. Drat.
     
    3500 GT likes this.
  13. emsiegel13

    emsiegel13 Formula Junior
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    #13 emsiegel13, Nov 4, 2024
    You can also buy a brand new one from Cicognani, an Italian rubber supplier for vintage cars, and they have a distributor the US so you can buy it locally from Motion Products Inc.
     
    3500 GT likes this.
  14. thecarnut

    thecarnut F1 Rookie
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    #14 thecarnut, Nov 4, 2024
    Thank you!
     
  15. emsiegel13

    emsiegel13 Formula Junior
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    #15 emsiegel13, Nov 4, 2024
    MrFiat is buyer their crankshaft damper from Cicognani and they are selling in Europe for 780.00E
     

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