AGA Transmission Mount Tool For Rent
09-21-2017, 10:16 AM
#1
AGA Transmission Mount Tool For Rent
Anybody who is interested in renting this tool, please PM me.
If you are thinking about doing this job, stop thinking and just do it. It's very easy, the mount only costs ~$60-70 and makes a huge difference in the driving of the car. Idle quality, shift quality, and overall road vibration. The newest of the 996s is now 12-13 years old; a rubber bushing holding up ~1/3 of the weight of the engine/transmission assembly and all the driveline loads associated cannot be expected to last that long. If yours has never been changed, you WILL fill a remarkable difference by replacing it, comparable to new motor mounts.
Using this tool you can replace it with nothing other than basic hand tools, rather than having to remove the transmission from the car and use a shop press.
Tips for making it easier:
1) A lift would help, but I did the job just fine on ordinary jackstands. With a lift it would just be easier to get leverage on things and see clearly whether everything is nicely lined up.
2) A long-handled 13mm ratcheting wrench. Actually two would be swell, since you need to tighten 2 bolts evenly, so if you have two wrenches you don't have to switch back and forth. Again, I did this with one ~6" 13mm ratcheting wrench, it's not that hard, it just takes longer.
3) The special AGA mount with the machined edge is not necessary. Just buy a Lemforder mount from wherever you can get it the cheapest; it already has a slight chamfer on the ends of it that help it get started in the hole.
4) At least on my car, the mount went in better coming from the passenger side, not the driver's side as the instructions suggest. On my car, the passenger side had a slight chamfer on the casting that helped align the mount on the way in, while the driver's side had a machined recess that the AGA tool fit into properly. Going the opposite direction things would have been considerably harder to line up. Your scenario may differ; perhaps not all transmission housings have exactly the same machined features.
If you are thinking about doing this job, stop thinking and just do it. It's very easy, the mount only costs ~$60-70 and makes a huge difference in the driving of the car. Idle quality, shift quality, and overall road vibration. The newest of the 996s is now 12-13 years old; a rubber bushing holding up ~1/3 of the weight of the engine/transmission assembly and all the driveline loads associated cannot be expected to last that long. If yours has never been changed, you WILL fill a remarkable difference by replacing it, comparable to new motor mounts.
Using this tool you can replace it with nothing other than basic hand tools, rather than having to remove the transmission from the car and use a shop press.
Tips for making it easier:
1) A lift would help, but I did the job just fine on ordinary jackstands. With a lift it would just be easier to get leverage on things and see clearly whether everything is nicely lined up.
2) A long-handled 13mm ratcheting wrench. Actually two would be swell, since you need to tighten 2 bolts evenly, so if you have two wrenches you don't have to switch back and forth. Again, I did this with one ~6" 13mm ratcheting wrench, it's not that hard, it just takes longer.
3) The special AGA mount with the machined edge is not necessary. Just buy a Lemforder mount from wherever you can get it the cheapest; it already has a slight chamfer on the ends of it that help it get started in the hole.
4) At least on my car, the mount went in better coming from the passenger side, not the driver's side as the instructions suggest. On my car, the passenger side had a slight chamfer on the casting that helped align the mount on the way in, while the driver's side had a machined recess that the AGA tool fit into properly. Going the opposite direction things would have been considerably harder to line up. Your scenario may differ; perhaps not all transmission housings have exactly the same machined features.
Last edited by dkraige; 11-16-2017 at 01:37 PM.
09-26-2017, 09:19 PM
#2
Just another note on this topic, if you are experiencing trouble getting your tires to balance and you have vibration at highway speed, it may not be your tires at all; this transmission mount can be the culprit.
I have brand new Michelin tires on my car, balanced by a reputable shop in town, but I still had steering wheel vibration at ~75 mph. I was ticked at the shop, thinking they did a lousy balance, but after thinking about it more, feeling the vibration come and go under different load and road conditions, and also feeling a lot of slop on/off throttle, I started to think it probably wasn't a tire problem.
After replacing this mount, it's gone.
Again, if you're debating doing this job, just do it. You'll be happy you did, and your car will drive better.
I have brand new Michelin tires on my car, balanced by a reputable shop in town, but I still had steering wheel vibration at ~75 mph. I was ticked at the shop, thinking they did a lousy balance, but after thinking about it more, feeling the vibration come and go under different load and road conditions, and also feeling a lot of slop on/off throttle, I started to think it probably wasn't a tire problem.
After replacing this mount, it's gone.
Again, if you're debating doing this job, just do it. You'll be happy you did, and your car will drive better.
The following 2 users liked this post by dkraige:
juancflores (02-23-2020),
rolfer85 (10-25-2020)
11-15-2017, 06:48 PM
#5
Rennlist Member
PM sent, I'm interested.
11-16-2017, 11:25 AM
#7
Trending Topics
11-16-2017, 01:34 PM
#9
12-13-2017, 01:34 AM
#12
Big thanks to dkraige for renting me the AGA tool, it worked great. Without a doubt my transmission mount was shot, it had a 97 date of manufacture! With a new OEM transmission mount and RSS motor mounts the car is now transformed. Awesome seat of your pants feel on the S turns.
12-13-2017, 03:29 AM
#13
Big thanks to dkraige for renting me the AGA tool, it worked great. Without a doubt my transmission mount was shot, it had a 97 date of manufacture! With a new OEM transmission mount and RSS motor mounts the car is now transformed. Awesome seat of your pants feel on the S turns.
12-13-2017, 11:48 AM
#15