4.1 dampener pulley bolt
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HT4100 4.1, 4.5, 4.9 Discussion, 4.1 dampener pulley bolt in Cadillac Engine Discussion; Help! I need a dampener pulley retainer bolt for my 1985 4.1 Deville! I have contacted a couple of GM ...
  1. #1
    rootercycles is offline Cadillac Owners Member
    Automobile(s): 1985 Deville with 4.1
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    4.1 dampener pulley bolt

    Help! I need a dampener pulley retainer bolt for my 1985 4.1 Deville! I have contacted a couple of GM dealers to be told that has been obsoleted. I have looked all over the internet without luck and no used auto yards is going to mess with this for less than $50. Where else can I look? It is a 16mmX1.25 pitch and 30mm long.


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  3. #2
    ehall's Avatar
    ehall is offline Cadillac Owners Connoisseur
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    Re: 4.1 dampener pulley bolt

    Do you have a Fastenal in your area? They will special order bolts and they are usually a few pennies

  4. #3
    rootercycles is offline Cadillac Owners Member
    Automobile(s): 1985 Deville with 4.1
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    Re: 4.1 dampener pulley bolt

    yeah, I ordered what I needed today. The high strength bolt and washer will be here wednesday.

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  6. #4
    ehall's Avatar
    ehall is offline Cadillac Owners Connoisseur
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    Re: 4.1 dampener pulley bolt

    did you break $1?

  7. #5
    rootercycles is offline Cadillac Owners Member
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    Re: 4.1 dampener pulley bolt

    $8 or something including shipping...

  8. #6
    carnut is offline Cadillac Owners Master
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    Re: 4.1 dampener pulley bolt

    That engine if original had no retaining bolt! There was a factory installed piece of cork ( like one in a wine bottle) inserted in that hole. A bolt installed is a good idea, but was not there originally!!

  9. #7
    rootercycles is offline Cadillac Owners Member
    Automobile(s): 1985 Deville with 4.1
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    Re: 4.1 dampener pulley bolt

    no bolt? Really? There isn't anything that seems to hold it in there other than centrifical force and the belt. Doesn't sound right...

  10. #8
    carnut is offline Cadillac Owners Master
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    Re: 4.1 dampener pulley bolt

    Its pressed on from the factory. It should not simply slip on like some other engines. If it comes off easily then the bolt is necc.

  11. #9
    rootercycles is offline Cadillac Owners Member
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    Re: 4.1 dampener pulley bolt

    I did have to get it off with a puller, but I am surprised it is just a "pressed fitting". I'm going to go ahead and put the bolt I have on to make sure. Got enough problems with this thing without the dampener falling off!

  12. #10
    carnut is offline Cadillac Owners Master
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    Re: 4.1 dampener pulley bolt

    I just looked at my 84 Eldo with 80,000 miles. It has the cork in the crank pulley! The threads in the crankshaft are there to enable a puller to remove then reinstall the dampner.

  13. #11
    dhuberasu's Avatar
    dhuberasu is offline Cadillac Owners Member
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    Re: 4.1 dampener pulley bolt

    I have a 1985 Fleetwood Brougham with HT4100 and would also like a dampener bolt....was the 16MM x 30MM with 1.25 pitch end up being the right one? I cannot find combination on fastenal's website....do you have part numbers?

    thanks
    david

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