Thread: Swapped to 3.4 pulley now there's a belt squeak...

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  1. #1 Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    I just recently changed my pulley to a 3.4, there wasn't a squeak the first day but by day 2 it started chirping. I have the 658 belt on. Should I try the stock belt? Thanks
    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  2. #2 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GrandPrix Junkie Bluemagic's Avatar
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    Stock belt wouldn't fit, check your pullies.

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  3. #3 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GrandPrix Junkie machinegunsquid's Avatar
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    Stock belt would be too long.

    Start the car, and watch the belt from straight down and see if there's any side to side wobble. If so, check all your pullies.


    Now, I just cammed my car recently, didn't change pullies or belts. When I put it back on, it was chirping. I watched it, no wobble. Removed it a few times trying to find something.
    I finally just put 1 small spritz of belt dressing, and it's been fine since (about 2-3weeks)

    "**** bills. You can live in your car but you can't race your house" -dsmuts
    Want her to stop when she's not looking karate chop her in her crotch that should quiet her for a bit or at the very least put a smile on your face -REDCOMPG
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  4. #4 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Ok, I'll check out the pulleys tomorrow.

    Sent from my PantechP8010 using Tapatalk
    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  5. #5 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GrandPrix Junkie ItHurtz's Avatar
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    I run stock belt on 3.4 with no problems....
    2000 GTPT Sold-brandonhall10 built trans
    2009 Challenger SRT8
    http://www.grandprixforums.net/threa...uestion.....no
    Expert at being gay.
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  6. #6 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GTP Level Member rodguezsciii's Avatar
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    stock belt on my 3.6 was crazy loud....squeezed a Gatorback 660, chirp went away....
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  7. #7 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    You would think the stock belt would make it chirp much more since it's much longer. For some reason though it was a pita getting the 658 on.
    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  8. #8 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GrandPrix Junkie gtpeddie's Avatar
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    I been running a stock belt on my 3.4 setup for well over a year now with no problems, it doesn't make noise, slip or anything. One thing I had problems with in the past is when putting the s/c belt back on if its not wrapped all the way around the harmonic balancer at the bottom where its hard to see it will jump off one rib on the h/b and will squeak.

    97 GTP DD, 1952 Ford F-1 Resto Project, 2006 Mustang GT "UnDeR CoNsTrUcTiOn", 02 GPGT SOLD!, 98 GTP Parted/Scraped
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  9. #9 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Is that the big pulley at the bottom? I thought that was the crank pulley?
    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  10. #10 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GrandPrix Junkie gtpeddie's Avatar
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    Yea same **** lol

    97 GTP DD, 1952 Ford F-1 Resto Project, 2006 Mustang GT "UnDeR CoNsTrUcTiOn", 02 GPGT SOLD!, 98 GTP Parted/Scraped
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  11. #11 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Alright lol

    Sent from my PantechP8010 using Tapatalk
    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  12. #12 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GTP Level Member AjL227's Avatar
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    IIRC, you can put on a 3.0" idler pulley and run the stock belt with a 3.4"
    I installed an I/C before I put on a 3.4", so I had a longer belt.
    '04 CompG "WS6"
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  13. #13 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Are tensioner pulleys known to go bad after a pulley swap? I looked at the crank pulley and the belt seemed a tad off to the outside of the pulley, towards the passenger side. I tried pushing it towards the other side and it was definitely off of a rib on the outside of the pulley. Is it supposed to look like it's sort of more at the edge of the outside? I can't figure this out. I'll try belt dressing tomorrow but I'm afraid it might make it worse.

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    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  14. #14 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GTP Level Member rodguezsciii's Avatar
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    Quote Originally Posted by K Kraziee View Post
    Are tensioner pulleys known to go bad after a pulley swap? I looked at the crank pulley and the belt seemed a tad off to the outside of the pulley, towards the passenger side. I tried pushing it towards the other side and it was definitely off of a rib on the outside of the pulley. Is it supposed to look like it's sort of more at the edge of the outside? I can't figure this out. I'll try belt dressing tomorrow but I'm afraid it might make it worse.

    Sent from my PantechP8010 using Tapatalk
    I changed every pulley and even the tensioner assembly when I went down to a 3.6 just for maintenance reasons....and alignment issues could be caused by how far back or forward your MPS hub sits....
    Last edited by rodguezsciii; 01-04-2014 at 04:29 AM.
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  15. #15 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Ok, I just have a press on pulley. I didn't go with the mps. My pulley isn't all the way flush with the snout, it's very close, but not all the way.

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    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  16. #16 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    Moderator dsmuts's Avatar
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    Got a pic?
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
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  17. #17 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Not at the moment. I can get one a little later though.

    Sent from my PantechP8010 using Tapatalk
    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  18. #18 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Purchased both idler pulley's and tensioner assembly from rock auto so I'll see if that helps. My tensioner assembly was wobbling a bit so I think somehow it got misaligned and messed up the springs. Here's a pic of my sc pulley.

    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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  19. #19 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    Moderator dsmuts's Avatar
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    Need a pic of the end of it to see how far on the snout shaft it is. Check your hb and make sure it's over all the way on it. Mine used to chirp when the belt was over one rib to far to the passenger side.
    98 GTP modded 1.9's, sd headers, 3.4", zzp 1.0 230K miles scrapped.
    04 Comp G zzp stb's, UMI ta's, Speedbuilt sways, bully flo heads, XP, zzp headers, fsic, thrasher shift kit, 60#, 2.6" corsa 2.5", Inferno hood
    01 gt z7 turbo tep trans zzp motor
    08 g8 gt cam exhaust 11.87@118
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  20. #20 Re: Swapped to 3.4 pulley now there's a belt squeak... 
    GT Level Member K Kraziee's Avatar
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    Ok so I figured out its coming from the supercharger Pulley. It seems to be spinning straight. What would cause this?

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    DD: 2000 Pontiac Grand Prix GTP

    3.5 ZZP MPS, HAI, ZZP Ported Throttle Body, PLOG, 3" Catless DP, Water pump and Alt. UD Pulley, Custom Tune
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