i will be going back to a rubber one too. i was thinking that the torque for the tranny mount was only like 18 ft-lbs or something.

 

I like my Prothane combo (motor and trans mounts). I didn't buy this car for quiet cruises down the interstate, so I don't mind the vibrations

 

I said the same thing when I put mine on and the vibration didn't bother me but I had a vibration that wasn't (and still isn't) there with the stocker and I exploded the tailshaft housing. Granted it was over 100 mph but these things will do that in the 1/4 stock.

 

I think hearing that was the deal breaker for me with poly mounts, what could you possibly gain from them that is worth a broken transmission?

 

I completely agree. Stock mount $20, Poly mount $35, watching the guy next to you vibrate his milk into butter AND sitting on a bell housing or tail shaft housing time bomb. Priceless

Nothing is worth being more uncomfortable and risking the loss of a transmission. Especially when its not even a power adder. No thanks

 

IF you have vibrations you have something else going on all the rubber mount is doing is masking it a little better. Unless you have an alignment issue like height or sagging.

 

I want to run solid motor mounts b/c of my turbo downpipe, what would you reccommend with these? I thought the solid motor mounts with the polly trans was a great combo but this thread is believing me otherwise. Should I use a stock rubber one with solid motor mounts or ES one for the trans

 

Whew! I just ordered the Prothane combo (engine and tranny mounts)
from Summit (along with other items). Someone suggested installing
motor mounts during the install of my headers, which is a good idea
considering I have 150k+ miles. Now I have serious doubts about
installing the Prothane polys. I guess it's back to Summit and get
some rubber to exchange the polys. Seeing as I have a new FLT
tranny waiting to go in, I'd hate to break it on account of the polys.

 

i have the prothane motor mounts and i am really glad i put those in. my prothane tranny mount isn't that bad. however, there is more vibration than with a rubber mount. i am going back to a rubber mount just so it is more enjoyable when cruising.

 

I have the prothane and when it is in OD I cant even tell it is there. It vibrates pretty bad on the highway if I put it in D but in OD it feels the same as stock.

 

Yep, that's what I had on my last car and it worked great.

I am getting ready to install the same setup on my new car too.

(Spohn Solid motor mounts, stock GM replacement TM)

 

Well, I got the Sphon Solids and a ES one on the way. My understanding is that they are in b/w a stock and a polly so we'll see how it does. If its that bad I guess I'll need to grag an oem trans mount but it shouldn't be that bad

 

I can't believe no one else saw this... He's absolutely right. I've ran mine up to 150+ with no vibrations. I've had this Energy Suspension mount for the past three forevers and I have absolutely no problems with it...

 

Is the trans mount the same part # for both A4 and M6?

 

i am pretty sure it is the same part. when i just ordered a new mount for my auto i found the part number on this site and then when i went to gmpartsdirect the number that i was given showed up to be for a manual. i have been told before on here that they are the same part so i am almost 100% sure that it is the same thing.

 

yeah probably the same reason they made the sweet 10-bolt

 

i just picked up a energy suspension trans mount from advance auto for $17.88, after reading this and a couple other posts i'm not sure i want to

although i do like doing things correctly and not an amateur tech, these last couple responses make it seem like the majority is doing something wrong

obviously i do not want to break my tailhousing, but i do feel the shifter moves alot when on hard throttle which makes me beleive that something is loose down there, whether its a TA mount or a trans mount something is not right

maybe comparing the amount of people that have aftermarket tunnel/SF connector mounted Torque arms vs. the stock Torque arms with vibration problems would be a help, because the aftermarkets are adjustable pinion angle maybe that makes the diff

like they said its all in the setup

 

What he means is, GM used a rubber mount rather than poly so that it could absorb drivetrain flex, rather trying to force metal parts (like the tailshaft housing) to flex.

 

im sorry but soda came out my nose after reading this lol.
Anyways, Hey Formula413. how did the trans feel after the mount change? i gotta change mine out i think (havnt gotten under there yet).

 

The only change was there was no giant BANG!!! every time I got on it. I used a stock replacement so it didn't feel any different. No complaints. Lifetime warranty, so I never have to buy another one.