i installed poly motor mounts in my T/A and i get this really funky vibration that changes with rpm, bad down low, and u can really feel it while ur speeding up, what could make my motor run so ruff? the vibrations sorda phase in and out???

 

mine was kinda the same way. the poly tranny mount was much more noticeable than engine mounts for me. now i cant even tell that they are in there

 

I just put in my motor mounts and i love how they feel. I get a bit of vibration but not much. I had put in the tranny mount about a year ago. Good thing is that now my y-pipe doesnt hit the underside of the car anymore.....

 

Mine kinda vibrates, but just at idle. I just put polys in my car. I was wondering if maybe I was getting as misfire or something, I guess it's just normal..?

 

I had polys at all three points - the vibration was bad. In combination with all the hard/stiff suspension stuff, it wasn't fun to drive for any length of time don'' get me wrong, WOT is always fun). I replaced the trans mount and things greatly improved. Now I've pulled the engine for other reasons and I'm replacing the other two mounts with stock GM. I'm looking forward to quieter cruising. I have moderate mods so I'm not expecting any durability problems.

 

is it just me or does poly stuff suck!!! i have a poly tranny mount that i just found split in half and a few days ago i noticed a few of my poly sway bar end link kit bushings were split? like they dry rotted or something

 

I haven't had problems with my poly suspension components but I lube them with this silicone grease I got from Steve Spohn.