just did a clutch swap, put a tick stage 2 t56 in, when we pulled the trans the transmission mount came out in 2 peices. I havnt been to the dealership yet to check out the stock one but I can find polyurethane mounts on a few sponsers sites. My question is, I rember reading that if you have a poly tranny mount with the stock rubber engine mounts, the transmission doesnt move as much as the motor and can cause damage. How true is that and should I be worried?

 

umm im wondering the same thing cause im kinda in the same boat as you

 

Yeah, Im not sure, I tried searching I didnt see much, maybe I didnt enter the right words. Im also pretty sure the dealer ship will charge a good chunk of change compared to the new Poly one.

 

No one to chime in?

 

Anyone know where to get a stock one besides paying 109$ at the dealer. As far as to answer your question, I have a poly trans mount on my M6 with the stock motor mounts and nothing has broken, drives fine, There is a bit more cabin vibration though.

 

I just got tranny mount from the dealership it was 12 bucks

 

From my experience , typically the polyurethane mount will allow a little more vibration felt in the drivetrain but thats about it . I would also suggest upgrading the torque arm bushing mount while you are there . Both are available through Energy Suspension .

 

i have the ES poly mount that autozone stocks, it was liek 20 bucks. stock motor munts and no issues so far

 

Same here, stock motor mounts and an ES poly trans mount, no problems here.

 

i've never heard of poly mount causing damage and i'm 99% sure it can't. my first mod was a poly trans mount, and drove it like that for 3 years without issue. you can pick one up at summit or jegs as well as local parts stores.

as far as vibration issues with the poly mount, is due to the fact that they generally are taller then the stock mount, and this difference throws the driveshaft angle out. easy way to correct this is by making spacers that go under the trans cross member(where it mounts to the chassis) that are the same thickness as the difference between the stock mount and the poly one. meaning take your stock mount and new mount and place them side by side on a level surface. measure the difference in height. that gives you the amount you should shim the trans crossmember. i've done this mod for several cars and solves the issue every time.