View Poll Results: Did you install a Transmission mount?
Voters: 10. You may not vote on this poll
Transmission Mount
Thread Starter
Three Wheelin'
Joined: Apr 2011
Posts: 1,346
Likes: 201
From: TX
Transmission Mount
Looking for the Rennlisters feedback here. Do you have an aftermarket transmission mount?
1) WHAT!?!? -> Too noisy
2) No -> No benefit
3) Yes -> shifting greatly improved
4) Other
1) WHAT!?!? -> Too noisy
2) No -> No benefit
3) Yes -> shifting greatly improved
4) Other
Rennlist Member
Joined: Sep 2014
Posts: 941
Likes: 288
From: Southern Ca
i have the FD solid trans mount on my 89 c4. And yes, it is a lil noisy. but i'm relieved I'm not the only one. i thought something was installed wrong at first, until i researched the product.
Rennlist Member
Joined: Oct 2010
Posts: 4,934
Likes: 483
From: fairfield, CT
I agree with cobalt. I installed a new oem trans mount, drive that. Then installed stiffeners, then removed them when looking for noises. You can barely tell the difference.
There is a difference. And some may like it better. It's just not "best bang for the buck"...
One thing is for sure. It won't make the car faster. So don't think of it as a real performance upgrade. If the car had a ton more hp and torque, and i were tracking it, it would be a good idea to add the support. But a stock 964 has very little hp and torque, so with good engine mounts you aren't twisting things too much and the little triangle stays aligned well under on-off throttle.
There is a difference. And some may like it better. It's just not "best bang for the buck"...
One thing is for sure. It won't make the car faster. So don't think of it as a real performance upgrade. If the car had a ton more hp and torque, and i were tracking it, it would be a good idea to add the support. But a stock 964 has very little hp and torque, so with good engine mounts you aren't twisting things too much and the little triangle stays aligned well under on-off throttle.
Rennlist Member
Joined: Dec 2003
Posts: 7,211
Likes: 490
From: NC
I've now installed them to two different 964s. 964s are actually really soft 911s, and most people drive around with their engines banging around because of worn-out sloppy motor mounts.
If you've ever installed new, tighter motor mounts you know how much that improves the feeling of the car as you set it up for a turn (not to mention shifting). It's still a subtle mod to most, especially when just cruising around, but it's actually a big improvement in the car's stability through turns. The transmission insert, is just a continuation of this. It too is subtle (at lower durometers = 60A), but it takes another level of twist and flex out of the drive train and increases the cars predictability and stability. Given this car's rear weight bias, I'll gladly take more reassurance.
I'm looking at it as not just one part, but part of a whole drive train system. Stiffer motor mounts, short shift kit, solid forward shift rod and Goldenrod + trans insert make for such a solid and locked down chassis. With the insert, both cars had a completely locked down drive train feeling. No on/off throttle slop at all, but not harsh, just direct. Drive a car like that on curvy back road for an hour and I guarantee you will appreciate the difference. Viewed that way, I definitely see it a performance upgrade.
At $130, plus an hour install, I also see it as an awesome "bang for buck" upgrade. The insert also protects the OEM trans mount. It's a smart product.
So it's subtle, but big at the same time. I'm not pretending to be a racer, I'm just looking for a more precise and honest feeling from the car.
One last thing, tailoring this response to OP (Mr. Italian), it's a natural for you given all the other RS+ upgrades you are already doing.
If you've ever installed new, tighter motor mounts you know how much that improves the feeling of the car as you set it up for a turn (not to mention shifting). It's still a subtle mod to most, especially when just cruising around, but it's actually a big improvement in the car's stability through turns. The transmission insert, is just a continuation of this. It too is subtle (at lower durometers = 60A), but it takes another level of twist and flex out of the drive train and increases the cars predictability and stability. Given this car's rear weight bias, I'll gladly take more reassurance.
I'm looking at it as not just one part, but part of a whole drive train system. Stiffer motor mounts, short shift kit, solid forward shift rod and Goldenrod + trans insert make for such a solid and locked down chassis. With the insert, both cars had a completely locked down drive train feeling. No on/off throttle slop at all, but not harsh, just direct. Drive a car like that on curvy back road for an hour and I guarantee you will appreciate the difference. Viewed that way, I definitely see it a performance upgrade.
At $130, plus an hour install, I also see it as an awesome "bang for buck" upgrade. The insert also protects the OEM trans mount. It's a smart product.
So it's subtle, but big at the same time. I'm not pretending to be a racer, I'm just looking for a more precise and honest feeling from the car.
One last thing, tailoring this response to OP (Mr. Italian), it's a natural for you given all the other RS+ upgrades you are already doing.
Thread Starter
Three Wheelin'
Joined: Apr 2011
Posts: 1,346
Likes: 201
From: TX
First my transmission mount has 170k miles: time to refresh it?
I will do for sure the FD SSK + GR (best all around package I could find). Solid engine mounts come next so -> yeah transmission mount (FD as well?) will probably go.
I once had an Integra Type R with HASport mounts and that car became a giant ***** when cold: the whole car was vibrating so much! But that front end when driving it hard...ah, loved it!
Trending Topics
Rennlist Member
Joined: Oct 2006
Posts: 9,676
Likes: 345
From: CT
It is loud when oil is warm. I would not classify the FD trans mount as street friendly together with LWFW and RS motor mounts. It transmits more sound than any other mod.
I don't hate it but there are many times I wished for a quieter cabin when driving. Do the function first insert instead.
I don't hate it but there are many times I wished for a quieter cabin when driving. Do the function first insert instead.
Rennlist Stories
The Best Porsche Posts for Porsche Enthusiasts
9 Vehicles Porsche Helped Engineer that Aren't Porsches
Verdad Gallardo
9 Features and Characteristics That Only Porsche People Understand
Verdad Gallardo
I've Written 500 Rennlist Articles: Here's How Porsche Has Changed Along the Way
Joe Kucinski
10 Most Unnecessary Porsches Ever Built (And Why We Love Them)
Verdad Gallardo
Porsche 911 GT3 S/C vs 718 Spyder RS: 10 Categories, One Winner
Joe Kucinski
This Builder Is Turning Heads With Its Slantnose 911 Creation
Verdad Gallardo
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture
Verdad Gallardo
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look
Verdad Gallardo
10 Porsche Colors That Have More Personality Than Most People
Verdad Gallardo
Thread Starter
Three Wheelin'
Joined: Apr 2011
Posts: 1,346
Likes: 201
From: TX
It is loud when oil is warm. I would not classify the FD trans mount as street friendly together with LWFW and RS motor mounts. It transmits more sound than any other mod.
I don't hate it but there are many times I wished for a quieter cabin when driving. Do the function first insert instead.
I don't hate it but there are many times I wished for a quieter cabin when driving. Do the function first insert instead.
Rennlist Member
Joined: Mar 2012
Posts: 17,250
Likes: 2,219
From: SoCal
For mine i used rothsport reinforced engine carrier, wevo stiff rear mounts, and rennlines stiffer trans mount. I suspect it will be fine. I opted not for solids lol. I also put dynamat on the tunnel. I know what a lwfw and solid bits sound like. Would be fine. Lots of mechanical noise but not harsh.
Rennlist Member
Joined: Dec 2003
Posts: 7,211
Likes: 490
From: NC
BTW, want to be clear. My comment above is referring to the function first trans insert (slips into the voids of the stock mount). No experience with solid mounts, RS, etc.
http://www.function-first.com/produc...s-mount-insert (no affiliation)
http://www.function-first.com/produc...s-mount-insert (no affiliation)
Last edited by 911Jetta; Jun 11, 2018 at 10:25 AM. Reason: add pic and link
Racer
Joined: Jan 2004
Posts: 289
Likes: 25
From: NW Lower Michigan
I used the 65shore bush, purchased from FVD. p/n 964 375 055 02. Installed at recent engine rebuild, I already had the RS engine mounts, I don’t find it harsh but much better vehicle dynamics and better transmission shifting. I would do this again, no question. The OE trans mount was cracking and had failed.
https://www.fvd.net/us-en/9643750550...-65-shore.html
https://www.fvd.net/us-en/9643750550...-65-shore.html
Rennlist Member
Joined: Oct 2006
Posts: 9,676
Likes: 345
From: CT
Originally Posted by 911Jetta
BTW, want to be clear. My comment above is referring to the function first trans insert (slips into the voids of the stock mount). No experience with solid mounts, RS, etc.