Semi solid trans mount?
Rennlist Member
Joined: Sep 2015
Posts: 1,310
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From: South Puget Sound Area
I use the Function First trans mount inserts - primarily for two reasons. It's claimed they will increase the life, or somewhat be restorative, if the original mount is sub-par. The other reason is they do eliminate some drive train movement in those semi-extreme/extreme conditions (e.g., hard acceleration) at the expense of NVH, as Pete mentioned. They are easy to install and remove.
Instructor
Joined: Jul 2018
Posts: 110
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From: Ohio
I use the Function First trans mount inserts - primarily for two reasons. It's claimed they will increase the life, or somewhat be restorative, if the original mount is sub-par. The other reason is they do eliminate some drive train movement in those semi-extreme/extreme conditions (e.g., hard acceleration) at the expense of NVH, as Pete mentioned. They are easy to install and remove.
Rennlist Member
Joined: Jan 2009
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From: Downers Grove, Illinois
Thread Starter
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Joined: Jun 2016
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From: Tampa, florida
From what i have read, everyone says the rss engine mounts help the feel of the car, and help shifting. Didnt know if it was worth anything to do the trans while i was in there
Rennlist Member
Joined: Jan 2009
Posts: 1,122
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From: Downers Grove, Illinois
Engine mounts are a more noticeable upgrade in IMO. I installed the 964 RS and like how thow rear feels more planted. Engine mounts do wear out and the orginal had a little sag.
Trany mounts are supposed to help with shifting. With FF tranny mounts I felt the differmce was a bit more solid shifting when at very high revs. I say a bit more. But nothing really elsewhere. The OEM tranny bushing looked fine when I installed the FF and these are a long wear item.
Trany mounts are supposed to help with shifting. With FF tranny mounts I felt the differmce was a bit more solid shifting when at very high revs. I say a bit more. But nothing really elsewhere. The OEM tranny bushing looked fine when I installed the FF and these are a long wear item.
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Joined: Jun 2001
Posts: 2,370
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From: San Antonio
I put some Wevo semi-solid engine mounts on recently and love the improvement. Tightened everything up, as mentioned, and the added NVH brought in a bit of the "rawness" many feel is missing from the watercooled cars. Shortly after, I put a FF orange transmission mount insert, and, while the difference wasn't quite as noticeable, I likewise enjoy the slightly increased mechanical NVH it gave me. The less soft GT cosseting the better, IMO.
Former Vendor
Joined: Nov 2015
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Petza914 's recommendation regarding NHV is spot on for 90% of street cars or combined street/track cars.
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Joined: May 2001
Posts: 984
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From: PA
I had a somewhat different experience. I installed the FF Yellow Trans mounts & shift bushings together to tighten shifting a bit under load, which it did. I did not notice any inc in NVH at all, but I was open to it.
24 mon later I added Rennline engine mounts (soft option) & Fabspeed x-pipe 200 cell sport cats at the same time. From 2.9 - 3.3K RPMs the NVH is ridiculous. Don't know if it's the engine mounts or Sport Cats. Going to put stock mounts back in to see if changes anything.
24 mon later I added Rennline engine mounts (soft option) & Fabspeed x-pipe 200 cell sport cats at the same time. From 2.9 - 3.3K RPMs the NVH is ridiculous. Don't know if it's the engine mounts or Sport Cats. Going to put stock mounts back in to see if changes anything.
