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2G Crankshaft pulley wobble

Posted by MasterMatt209, Jul 23, 2019

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  1. MasterMatt209

    MasterMatt209 Proven Member

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    As I was putting my alternator belt on I started the car to check for squeal before I put the splash guards back on and such, I noticed my crankshaft pulley was not only wobbling but missing a bolt too. What’s the rundown here?
     

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  2. Mello

    Mello Proven Member

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    Most likely the inner & outer are separating from each other & it's time for a new harmonic balancer. The isolating rubber section has deteriorated & is coming a part.
     
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  3. MasterMatt209

    MasterMatt209 Proven Member

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    How bad is it to replace?
     

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  4. Mello

    Mello Proven Member

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    I think it would be good to replace.
     
  5. 2gmitsueclipse

    2gmitsueclipse DSM Wiseman

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    Well, you already have one bolt out, so three more and pop it off. Obviously, you will need to loosen the accessory belts. If you cannot remove it due to hitting the frame rail, place a jack with some wood on it under the oil pan to support the engine. Just using the jack could damage the oil pan. You can now remove the upper engine mount on the timing side. Use the jack to slowly lower the engine on the timing side to clearance the crank pulley.
     

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  6. MasterMatt209

    MasterMatt209 Proven Member

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    That doesn’t sound too hard, when researching I thought this part had something to do with timing and I would have to take the timing belt off and stuff
     

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  7. MasterMatt209

    MasterMatt209 Proven Member

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    I’m sorry what I meant was how bad as in how hard would it be? I’ve done lots of engine work but never this specific task
     

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  8. curt-s

    curt-s Proven Member

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  9. motomattx

    motomattx Proven Member

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    That should come right off without even jacking up the engine, just pull the four bolts and wiggle it right past the body and it should drop down and out.
     

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  10. ThunderChild

    ThunderChild Supporting VIP

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    Correct. Just take the belts off, undo the bolts and slide it out. For a good replacement, OEM or a fluidamper would be my recommendation :thumb:
     

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  11. my98gsx

    my98gsx Proven Member

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    You need to fix this immediately. Its adding unwanted vibration on your crank. You can get replacement bolts from any hardware store for the crank pulley, they are nothing special. Inspect the pulley and make sure it has not been damaged or separated. If so, do not reinstall. You do not have to remove the center bolt, but sometimes the pulley gets stuck to the timing gear behind it. Some light taps with a rubber mallet usually break it free without issue.
     

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  12. tk106

    tk106 Supporting Member

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    Yes ASAP. Mine just came apart. Now I need a new cover and timing belt along w damper. Looks like you don’t have ac so just loosen the alternator belt.

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  13. tk106

    tk106 Supporting Member

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    You might be able to break the bolts loose first and then loosen the alternator belt
     

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  14. Boomdeeze

    Boomdeeze Proven Member

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    You do have to lower the engine to get the pulley to clear the frame rail. Like mentioned above, put a floor jack under the pan to support the engine and loosen the driver side motor mount. You won't have to take the mount off just loosen the two nuts on the studs and remove the bolt, the engine will move enough for the pulley to clear.
     

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  15. tk106

    tk106 Supporting Member

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    Guess it’s different for 1g. 1g has enough clearance.
     

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  16. MasterMatt209

    MasterMatt209 Proven Member

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    Thank you for all of the good information I will be ordering an OEM pulley at the end of this week. So floor jack on the oil pan to support engine? Also would this be a good time to swap that engine mount too? Maybe not the mount but the insert at least? If so what’s a good replacement
     

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  17. motomattx

    motomattx Proven Member

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    Try taking it out without lowering the engine, I have never had to touch a motor mount to take one out and I just did one two months ago, I also did my 4g64 Spyder in my driveway after work one night and never touched a motor mount and its all stock, either I'm a magician or just really good.
     

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  18. 2gmitsueclipse

    2gmitsueclipse DSM Wiseman

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    Before you purchase an OE, look into spending a little more to opt. a Fluidampr.
     

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  19. MasterMatt209

    MasterMatt209 Proven Member

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    I thought about it, it seems that’s for an engine that’s modified a little more than mine. I have an egr delete and a filter for the maf and that’s about it. Do you think the fluidampr would benefit a mostly stock DD?
     

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  20. MasterMatt209

    MasterMatt209 Proven Member

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    Yeah I’ll try to take it out without jacking the engine first
     

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  21. motomattx

    motomattx Proven Member

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    Its very tight but its do-able.
     

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  22. 2gmitsueclipse

    2gmitsueclipse DSM Wiseman

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    It sure will. It won't fail like the OE design.
     

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  23. tk106

    tk106 Supporting Member

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    If you have to jack the motor, put a piece of 2x4 between the jack and pan so you don’t damage the pan. But from what the 2g guys have posted, seems like you shouldn’t have to touch the mounts like a 1g
     

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  24. 1990TSIAWDTALON

    1990TSIAWDTALON Moderator

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    Man Tony, that one of yours was SUPER bad. Hope it didn't hurt anything or anyone! WOW!
     

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  25. tk106

    tk106 Supporting Member

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    I know. Timing jumped too and I think a piece of the cover caused that and also damaged the tbelt. I reset timing yesterday and it was 120 110 110 110. Motor turned fine but I won't know until I get the belt next week. Fingers crossed :pray:.

    I checked the damper in February when I refreshed the head and the rubber looked fine, no cracks. But I did install the alternator pulley backwards when I ported the OFH a few weeks ago and I think that with the age helped breaking apart the rubber.
     

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