[etcts-v]

We were just discussing this on the LS1tech forum. I purchased and installed this insert and love it, although I have to warn you it was a serious pain in the ass to install. On my car the trans mount has collapsed a bit with time so trying to push the insert in past the outer ridges was a lot of work. The only way I finally got it in was to take the cross member off the transmission, put the cross member under the legs of the engine crane then hook the crane to the top of the mount and use the crane to pull it apart just enough to get the mount in. Even with the crane it still took 30 minutes with a pair of flat head screw drivers to work it's way in. The OEM rubber is really stiff and it takes a lot to pull it apart far enough for this to slip in.

With that said, once I got it in it made a HUGE difference to the feel and shifting of the car, It's like a whole new car. Over time the mounts compress causing the geometry of the linkages to be all jacked, with this insert it is solid and straight now, worth every penny and I am glad I made the purchase!!

 

[etcts-v]

I just installed the insert and motor mounts. No need to remove the mount, takes 15 min or less.
-Get the exhaust pipes out of your way (removed the midpipes on my corsa).
-Put a jack under the back of the trans with a block of wood inbetween.
-Jack up the back of the trans until the mount hits its uptravel limiter.
-Lube up the insert
-Shove it in the gap in the mount (this will take some force. I got it started then bumped it in with a dead blow hammer)
-Drop jack
-Re-install midpipes
-Enjoy no extra vibes, less trans movement and a non-sunk trans mount

I am quite pleased with the whole package (motor and trans mounts)

Great workaround! My transmission was not in the car when I put mine in and the mount was crushed almost completely flat.

 

[etcts-v]

I have 65k on my 05. By no means am I saying it slid right in, but if you jack it up all the way to the stop, lube it, get the front lip/edge started into the mount then you can beat it in with a dead blow hammer. When you are putting it in watch the slot in the insert and make sure the edges aren't getting caught on the center post of the mount.

Yeah that wouldn't have been possible with mine, dead blow hammer and lube made zero difference when I tried it, the main problem was the sides of the mount not the top and bottom. I had to get one side a quarter way in then crunch the other side and use a screw driver while my roommate used the hammer to beat it in, chewed it up a bit.

That said it would have been a lot easier if my transmission had been in the car.

 

[etcts-v]

How much more work would be involved in just removing the stock mount to press this insert into it ?

Not much although I think you best bet would be to try NC-V's approach first as it gives you a way to force open the mount with a jack.