Stock Replacement Trans Mount
03-08-2012, 07:36 AM
#21
My question is why are you breaking them?
Keep in mind...that whatever force is breaking them will now be transferred to the extension housing with a poly mount. Guess what will break next?
Keep in mind...that whatever force is breaking them will now be transferred to the extension housing with a poly mount. Guess what will break next?
03-08-2012, 08:25 AM
#22
Do NOT be afraid to use a poly transmission mount. Everyone complains about them and takes them off. You must drive them for a few weeks, and then the vibrations will be completely gone. It will soften up. I've used 3 different poly trans mounts in daily drivers, all on stock rubber motor mounts, and all noise and vibrations go away after a bit of driving. They definitely hold the shifter in place a whole lot better. Most people feel the vibes on day 1 and take them out, but you gotta give it time. Trust me.
Too many people install the poly mount, decide they hate it, uninstall it, then come on here and bash it.
03-08-2012, 02:45 PM
#23
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And it's far from a certainty that the tailshaft housing would break, certainly not with any of the wopping high 1.6 or 1.7 60ft launches I rarely make.
03-09-2012, 08:34 AM
#24
03-09-2012, 08:38 AM
#25
03-12-2012, 06:55 AM
#26
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I have energy suspension trans mount, I had bad vibrations right away and it was just bad motor mounts replaced those with prothane and the vibration almost completely gone, also I didn't use plate and I grinded down the 2 bumps on trans mount first, snugger fit less vibrations, oh and weird thing I had a decent oil before I changed both and now it stopped leaking haha
03-25-2012, 10:10 AM
#31
04-03-2012, 12:52 AM
#32
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I'm going to tell you a little story.
When I installed the Kooks 1 7/8 tubes on my F body, I installed poly motor mounts. It was felt that Kooks tucks their tubes close enough that you should use poly motor mounts to keep them from touching the body when torqued. When I see how close they were, I agreed. Fantastic fit and ground clearance. While I was at it, I also changed to a poly trans mount. When I was done, the vibration inside the car was very noticeable. In fact, it was unpleasant. Enough so that I considered going back to normal motor mounts and putting up with some exhaust clunks. Then I read here where poly trans mounts were a bad idea because they could break the trans extension housing. So I did some searching and found a brand new GM trans mount on Amazon of all places for $47!!! Part # 22174970. It may fit both AT and MT...but I'm not sure. Regardless, it showed up and was a true GM mount. I stuck it in the car and I was totally blown away. The car drove like a brand new vehicle!!! ALL the vibration was GONE! If someone had told me that a simple trans mount would make such a difference, I would have called BS...but it is the absolute truth. I think you can find other testaments here as well.
Do NOT use a poly trans mount!
When I installed the Kooks 1 7/8 tubes on my F body, I installed poly motor mounts. It was felt that Kooks tucks their tubes close enough that you should use poly motor mounts to keep them from touching the body when torqued. When I see how close they were, I agreed. Fantastic fit and ground clearance. While I was at it, I also changed to a poly trans mount. When I was done, the vibration inside the car was very noticeable. In fact, it was unpleasant. Enough so that I considered going back to normal motor mounts and putting up with some exhaust clunks. Then I read here where poly trans mounts were a bad idea because they could break the trans extension housing. So I did some searching and found a brand new GM trans mount on Amazon of all places for $47!!! Part # 22174970. It may fit both AT and MT...but I'm not sure. Regardless, it showed up and was a true GM mount. I stuck it in the car and I was totally blown away. The car drove like a brand new vehicle!!! ALL the vibration was GONE! If someone had told me that a simple trans mount would make such a difference, I would have called BS...but it is the absolute truth. I think you can find other testaments here as well.
Do NOT use a poly trans mount!
