Thread: Poly Motor Mounts

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  1. #1 Poly Motor Mounts 
    GT Level Member adidasdude1061's Avatar
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    Want to buy some of these from someone or maybe from a site... Is the offset worth getting? I see it says it moves the motor forward more, so would that mean exhaust and everything will shift as well? I have the Randomtech downpipe which has no flex, and I don't want it to start leaking if something gets moved just a hair the wrong way
    '97 BLACK GTP--Chrome K&N CAI--3.5" MPS--3" RT Cat Downpipe--180*Tstat--Tuned PCM--Alpine 9886--Kicker Amp - 2 12" Kicker L7's--ALT boost&rewire
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  2. #2 Re: Poly Motor Mounts 
    club of used to own a gp 99prixgt's Avatar
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    You would probably run into problems with headers and other things. I bought the set from Intense, they are very nice.
    16' wrx sti- stock
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  3. #3 Re: Poly Motor Mounts 
    Donating Users GR8racingfool's Avatar
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    Only get the off set ones if your CV shafts are binding from being too lowered with springs such as Eibach's.

    If your not having problems, then keep the same stock position...just upgrade to the POLY mounts to avoid access engine movement, and to save your lower motor mounts from tearing.

    ~F~
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  4. #4 Re: Poly Motor Mounts 
    GXP Level Member Zef_66's Avatar
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    I agree that offset mounts are not needed if you don't have any issues. Just stick with regular position mounts.
    2001 GSE
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  5. #5 Re: Poly Motor Mounts 
    SE Level Member jims05ss's Avatar
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    Quote Originally Posted by GR8racingfool View Post
    Only get the off set ones if your CV shafts are binding from being too lowered with springs such as Eibach's.
    Either the offset mounts or shorter dogbones; had bad vibration after lowering on Eibachs and the shorter db's took care of 95% of that.
    05 Impala SS; 13.84 @ 100. SSIC, 3.25 pulley, 1.9's, PRJ tuned PCM, ZZP SS P-log, ZZP SS 3" DP, ZZP TB spacer, 4" FWI w/9" K&N, U-bend & resonator delete, Magnaflow cat, wrapped crossover, 180 t-stat, PRJ Wires, 103's, Royal Purple, Eibachs, front & rear STB's, Aeroforce.
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  6. #6 Re: Poly Motor Mounts 
    TDCRacing
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    Good mod for the money. Be prepared for increased vibration and harsher shifts. No header issues with the standard ones
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  7. #7 Re: Poly Motor Mounts 
    Bastard Reptile's Avatar
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    Poly uppers didn't save my lower ones. shame really, because I had to end up getting a poly trans mount. LOL
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  8. #8 Re: Poly Motor Mounts 
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    Quote Originally Posted by TDCRacing View Post
    Good mod for the money. Be prepared for increased vibration and harsher shifts. No header issues with the standard ones

    How bad is the increased vibration with these? I am considering it, but I value ride quality highly and was hoping for some clarification.
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  9. #9 Re: Poly Motor Mounts 
    GrandPrix Junkie Sabrewings's Avatar
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    I have the ones from 3800performance. You only notice a difference if you're stopped at a light and it's in gear. It vibrates, but not harsh.
    2004 Impala LS - got some mods sold!!!
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    NAIOA moderator Still Imp'n, just in a different Imp.
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  10. #10 Re: Poly Motor Mounts 
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    Quote Originally Posted by Sabrewings View Post
    I have the ones from 3800performance. You only notice a difference if you're stopped at a light and it's in gear. It vibrates, but not harsh.
    Thanks, how much better does it feel at the track? Is the traction gain worth it?

    Also, has anyone compared this to flipping the stock mounts? Is it worth it over that option?
    Last edited by anks106; 11-09-2008 at 12:01 AM.
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  11. #11 Re: Poly Motor Mounts 
    Donating Users PonchoDvr4Lfe's Avatar
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    I run the ones from Intense. You would be good just replacing the lower blocks. Unless you want to be rattled outta ur seat with the upper round mounts in too. Like Sabre said above, you really only feel the vibes at stops at lights. I replaced mine about two weeks ago. I could tell an immediate difference with traction. Much better breaks on the burnouts too.
    Definitely worth it.
    Not a horrible pain to switch either. Just make sure you soak them Wd-40 or PB Blaster first. Much easier that way. I worked mine out of the brackets with a pair of screwdrivers. Bout a 20 min job all round.
    04' GP GTP Comp G, 08' G8 GT, 10' Camaro 2SS


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  12. #12 Re: Poly Motor Mounts 
    GrandPrix Junkie Sabrewings's Avatar
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    There's definitely a difference in how it wants to hook up. Shifts feel better.
    2004 Impala LS - got some mods sold!!!
    2009 Subaru Impreza WRX STI

    NAIOA moderator Still Imp'n, just in a different Imp.
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  13. #13 Re: Poly Motor Mounts 
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    X2
    It shifts firmer.
    I have the polys from zz p.
    Altough i miss my stock ones.

    TOGs//Stge III ZZP Blower//LS1 tb// 85 maf//XP cam //105lb spings//3" Dp& high flowcat//3.2",3.0"
    Ud plly//Msd wires//Aut 103's//CAI//ZZ PCM//ZZ P shift kit//42.5lb. 13.3@104MPH DEC 08
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