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Crank pulley

Discussion in '"Stock" Alpine' started by mxp01, Jul 20, 2013.

  1. mxp01

    mxp01 Platinum Level Sponsor

  2. RootesRacer

    RootesRacer Donation Time

    If your engine was a 1592 then yes, that is correct.

    If its a 1725, then no, you need the elastomeric damper pulley.
  3. tony perrett

    tony perrett Gold Level Sponsor

    Before you buy it, make sure that there is not a split adjacent to the keyway. This is a notorious weak spot.
  4. 65beam

    65beam Donation Time


    this is not the harmonic balancer for a series 4. this looks to be from a sedan.
  5. RootesRacer

    RootesRacer Donation Time

    3 main motors got a pulley, not an HB.

    The HB came in with the 1725, though its common to see them on 3 main motors.
  6. 65beam

    65beam Donation Time


    check the parts books. it's listed as a damper with pulley. my series 4 came with the harmonic balancer as factory equipment.
  7. alpine_64

    alpine_64 Donation Time

    As Tony mentioned you really need to check if they have a crack in the keyway.. and almost all do these days.. also if it has a taper from wobbling around after cracking.

    I would personally spend the extra $ and buy a repro one.. lucky you are stateside and there is an advertiser who used to be on the front page (RHP or something similar) who makes them in several specs, form stock to race application. Rootes post vintage in the NL also make an alloy one that can be with or without damper.

  8. Series3Scott

    Series3Scott Co-Founder/Past President Platinum Level Sponsor

  9. RootesRooter

    RootesRooter Platinum Level Sponsor

  10. Greggers

    Greggers SAOCA Vice President Platinum Level Sponsor

    I bought the aluminum timing cover and damper kit from joesrestorationrescue.com, and it comes with the same BHJ damper. It works great with the aluminum timing cover, which is already modified for the Chevy oil seal. No leaks so far (in four months).

    However, I have no experience modifying an original timing cover to fit a Chevy seal.
  11. mxp01

    mxp01 Platinum Level Sponsor

    Gentlemen I went with the pulley posted above. I checked out the pulleys on BHJ and I will gamble with the 28 dollar pulley first before I spend over 200 bucks. If it is cracked or the key hole wore out then I'm just out 28 dollars.

    Now I just have to come across the nut that holds it on. I wold like to have the special one that goes with the hand crank. I'm sure I can buy something from a hardware store for now to hold it on until then.
  12. Henry Small

    Henry Small Donation Time

    Many years ago my crankshaft pulley key way slot on my Alpine 1 needed to be re-cut to a new location. I took the pulley to a machine shop and they easily cut a new key way slot and the cost was under $20 (20 plus years ago) and took less than 5 minutes. If it is the right pulley for your car and the bore is ok the key way slot status should not be a major concern. Remember if you change key slot location the timing mark on the pulley for TDC will change.

    Since the photo does not show the top of the pulley it is difficult to determine if it is really an Alpine pulley. From my review of the photo, I know it is not a Alpine 1 pulley and I would question if it is an Alpine pulley.

    If you are willing to gamble that it is the right pulley for your car and the condition is ok spend the $18. You can always clean the pulley up if it is not the correct part and use it for a paper weight!
  13. jumpinjan

    jumpinjan Bronze Level Sponsor

    I haven't seen many used pulleys that are still serviceable during an engine rebuild. Most of them need to be replaced. I wouldn't use anything BUT the BHJ Dynamics pulley. It is very, very nice.
    (By the way, ALL Alpines used the harmonic damper. The one on Ebay came from a Rootes sedan. It will not absorb the crankshaft torsional vibrations http://en.wikipedia.org/wiki/Torsional_vibration )

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