Pontiac Grand Prix Forums : Grandprix

hey guys ever since my poly mounts install ive been noticing when i hit bumps its sounds like a quiet knock sounds like the mounts because when i come to a stop it makes that noise but only once as if the motor shifted the and pushed the mount forward then back....does anybody else hear this?

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NO LONGER USING THIS NAME MY NEW USER IS BOOSTJUNKI3!!!!

..no? my mounts make no funny noises.

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98 XGT - sold
06 impreza 2.5i 5 speed - stock, slow, and awesome

my buddy has a solid motor, tranny, and poly uppers...his creaks a bit when its cold and he puts it into gear but thats it.

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2003 Blue-Black Metallic GTP Sedan - Almost Done...
2007 Gold Mist Chevrolet Cobalt LT - Custom CAI, NGK V-Power's, Muffler Delete, Custom Tuned PCM...Sure does have every bit of 130 FWHP
http://www.cardomain.com/id/03blueGTP

Check to make sure you tighten the bolts good on both ends of the dogbones. If that's not it then perhaps you installed them wrong(hard to do but not impossible) or maybe the round bushings are shot. If they are creaking you can use asssebly lube or grease to quiet them. Mine have never made a clunk or knock but they did creak and some grease solved that.

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L26,Xp, zzp trans,3.29's,2700 conv, slp headers/catback, diy ported heads/LIM, 3 angle valve job,.052 MLS hg, outlet ported Gen V, 3.6, N*, LQ4, 4" FWI, agx's, ssc's, f-bodys, gmpp sway's +stb's

they are making a clunk noise i think it may be the round bushings....

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NO LONGER USING THIS NAME MY NEW USER IS BOOSTJUNKI3!!!!