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Thread: Getting ready to add my first SC

  1. #1
    Join Date
    Apr 2011
    Location
    Illinois
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    178

    Getting ready to add my first SC

    picking up a 92 SC 5-speed here shortly. Already done a whole heap of reading on here and picked up tons of information. I will get pics up when the deal is done and get started on the mods already.....and there is a list already brewing.

  2. #2
    Join Date
    Aug 2006
    Location
    St. Louis, MO
    Posts
    1,276
    Welcome to the club!
    1994 white sc (Daily Driver)
    14 year sc owner
    SCCoA Member #: 3774

    View http://www.sccoa.com/forums/garage_v...vehicle&id=107

    UP THE IRONS!!!

  3. #3
    Join Date
    Apr 2011
    Location
    Illinois
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    178
    wow been reading all night again. Main thing I am looking into is the vibration the engine has during revving with the clutch in or out, either in neutral or gear. The crank pulley is out of round I can see while running, the harmonic is a BHJ solid. In my readings I see that these motors vibrate, so I doubt its anything to worry about, its just new to me. Car runs crazy fast and loads of power. I am excited to be getting this, its my first boosted car. I have a hotrod toy, a 71 Nova SS 350 4-speed, this is just a different type of animal all together.

  4. #4
    Join Date
    Oct 2004
    Location
    Metro Denver Area
    Posts
    2,513
    Sounds like you might want to get a new pulley? If so, have it zero balanced to the BHJ... Don't think they should be noticeably wobbly

    Welcome to the club....
    Last edited by 90coug; 04-16-2011 at 09:46 AM.

  5. #5
    Join Date
    Oct 2004
    Location
    Charlotte, NC
    Posts
    8,159
    Go ahead an get another crank pulley....

    Any wobble can cause metal fatigue and eventually it will fail....

    I have a few good ones at my shop.....

    Check your motor mounts.....

    You will see metal tabs sticking out an opening on the side of the motor mount housings.....

    If the tabs are at the bottom of the opening, then the mount is bad.....

  6. #6
    Join Date
    Apr 2011
    Location
    Illinois
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    178
    motor mounts were replaced when the new HB was installed amongst other items so I believe them to be ok, I went looking at them yesterday in the rain and didnt see them from the top, I will get under it to verify their condition. The crank pulley has new bolts in it so it should be easy to remove. So would I remove the HB as well and take it to a shop for balancing? Or is there a garage method?

  7. #7
    Join Date
    Apr 2011
    Location
    Illinois
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    178
    Quote Originally Posted by the-big-e View Post
    Go ahead an get another crank pulley....



    I have a few good ones at my shop.....
    how much you letting those go for

  8. #8
    Join Date
    Apr 2002
    Location
    St. Charles, MO
    Posts
    20,889
    Quote Originally Posted by Hasher76 View Post
    motor mounts were replaced when the new HB was installed amongst other items so I believe them to be ok, I went looking at them yesterday in the rain and didnt see them from the top, I will get under it to verify their condition. The crank pulley has new bolts in it so it should be easy to remove. So would I remove the HB as well and take it to a shop for balancing? Or is there a garage method?
    Suggest replacing the crank pulley with a zero balance aluminum pulley. Several of the vendors sell an underdrive pulley kit that includes a smaller crank pulley and larger waterpump and alternator pulleys that will correct the wobble and balance issue, and provide another 10-15 HP at the same time.

    Or you can purchase a 10% OD crank pulley from MP that is zero balance and larger than stock on the blower drive portion. I believe that at least on of the vendors is selling a stock size aluminum crank pulley that is also zero balance. I wouldn't bother with trying to balance the stock stamped steel pulley.

    David
    1991 SC AOD 4.2..2.3 Whipple..........10.910 @ 125.61
    2016 SRT Challenger Hellcat...............707HP/650TQ

    My Garage

  9. #9
    Join Date
    Oct 2004
    Location
    Charlotte, NC
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    8,159
    Quote Originally Posted by Hasher76 View Post
    how much you letting those go for
    PM sent.....

  10. #10
    Join Date
    Apr 2011
    Location
    Illinois
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    178
    Quote Originally Posted by David Neibert View Post
    Suggest replacing the crank pulley with a zero balance aluminum pulley. Several of the vendors sell an underdrive pulley kit that includes a smaller crank pulley and larger waterpump and alternator pulleys that will correct the wobble and balance issue, and provide another 10-15 HP at the same time.

    Or you can purchase a 10% OD crank pulley from MP that is zero balance and larger than stock on the blower drive portion. I believe that at least on of the vendors is selling a stock size aluminum crank pulley that is also zero balance. I wouldn't bother with trying to balance the stock stamped steel pulley.

    David
    i will look into the ud kit too, thanks

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