ervin881

Toronto, I've got the FF yellow tranny mounts and they are excellent. Little if any increase in NVH and they smoothed my 1-2 gear shift. Couldn't be happier.

997_Toronto

Are the yellow's stiffer or softer? Maybe the orange is not for me & my car configuration

yvesvidal

Yellow is the softer. Then Blue, then Red....for track only.

Yves

SoCal C2S

Orange is the softest....I had a big resonance going through 2k rpm....had.

Function-First

For the FUNCTION-FIRST Transmission Mount Inserts, here is the hardness breakdown:

SOFT (60A) | Orange - for added performance and to restore and preserve your OEM mount with minimal NVH

SPORT (70A) | Yellow - for tuned and sport-oriented performance street cars, with less NVH than TRACK version

TRACK (80A) | Black - for optimized performance on track and racecars where NVH is not a consideration


Since perceived NVH is very subjective and varies from person to person, and sometimes car to car, I always recommend erring on the softer side if you're between 2 hardnesses.

Comanche_699

That made me laugh out loud. Reminds me of the ol' Johnny Dangerously bit-

https://m.youtube.com/watch?v=M31njY...ature=youtu.be

German888

Finally able to get 2 nice drives which were the first of the season for me. Installed NYPPD semi solid engine mounts over the winter and I definitely notice more NVH than OE however nothing that would cause me to go back. Most noticeable at just above 3K RPM. I won't go on about how significant the shift improvement or handling of the car is.

I made major changes to the car to include coilovers, SSK and Numeric Racing cables so I have no basis for which to offer an opinion on those characteristics.

DocHW

Did someone with the OEM 964 RS mount change back because of too much NVH?

SoCal C2S

Well I know what I'm watching tonight! I so loved the "88 magnum" comment!

Airbag997

Curious on this as well?

JF22

GT2 engine mounts here (expensive) but no vibration

Dan GSR

Automatic will notice A LOT more nvh than a manual

DocHW

Still curious if someone here installed the 964 RS mounts, but went back to stock because of vibrations.

Thanks.

cvtbenhogan

Yes me too. +1

Appraiser

I have 964 RS mounts on my car, I can't see why anyone would go back to stock. I bought URO parts, looked identical to the Porsche OEM 964 mounts - maybe there's a significant difference in rigidity? I pieced together the washers and bolts as needed through Pelican - I can look up part numbers for you guys if you need it. Be sure to get (4) of the big washers, two per side. I think a diagram is off and suggests only one per side.

My car is all stock otherwise with 60k miles on 18" non-pasm base C2 suspension. Nice and high. I'm running Potenza S04's.

It added a little rigidity but nothing day/night difference. The squat under acceleration is reduced ~20%. Very little NVH was added, virtually indiscernible inside the cabin with 10 year old factory rubber in place everywhere. RPM didn't exacerbate any NVH. I only noticed it made any difference with more abrupt throttle applications, especially mid corner on my canyon roads. The rear settles quicker. For cars seeing the track often I'd suggest semi-solid to feel more difference. However, for street comfort cars it's a worthwhile minor change for a couple hundred dollars.

This past weekend I added Function First Orange colored transmission mount insert. Install was straight forward, did it in the garage with the car up on all four jack stands, although I wish Function First would include the torque specs on the instructions sheet. Immediately noticed more vibration through the chassis on first start. Passenger seat now shivers when car starts and secondary air pump is on. Once idle settles to 750-800 rpms it is much tamer, down to a micro tremble. A plastic seatbelt tower cover had buzzed for a split second when the second air pump was on - but subsided as the idle settled down. Nothing vibrates or rattles throughout the rev range sitting or while moving.

The car is louder and picked up lower frequencies interestingly enough. There's a palpable bass added when wringing out the engine, it's wonderful, I have Fister D mufflers as well - it's really made driving with the window down a treat. The 964 RS mounts did not make this sound on their own, dunno if they contribute towards it though. Shifts may or may not have improved, I think so but it could just be placebo - the factory shifter is hit/miss as-is. I don't want to give up my long throws, so I can't speak to the effectiveness as a shifter aid, but I'm glad to have picked up some rigidity and push it into the 'sports car' territory some more. I was weary of ordering the mounts based on other people describing the orange mounts as a nuisance but happy that wasn't the case for me. Everyone's taste is different though.

I don't find it annoying in any way shape or form - I'd/I'll be annoyed if plastic starts to rattle or I find my fillings begin to rattle around in my head sitting at a stop light - so far it's been great though and the music can be played at the same volume as before. The combo of the 964 RS mounts and orange transmission mounts is very complimentary in my opinion for a 'sport' car. Right at that limit - I wouldn't want to add any more vibration.

But my stuff is far less stiff than the PASM or lowered spring cars from the get-go so I'm playing catch up in a sense. I can imagine it crosses the threshold of acceptable with other NVH extra contributory parts.