Perrin Transmission Support & Whiteline Gearbox Positive Shift Kit

[stevo_12v]

Did the install today(still yet to drive it - have to install exhaust tonight).



The cradle assembly feels DAMN tight!

[Burn]

Good one!!

Sent from my GT-N7000 using Tapatalk 2

[Captain Insano]

Great thread. Tons o' good info in here. Thanks guys.

[Kuzuri]

anyone use both the whitelien bushing and the perrin mount support together? Im interested in hearing other peoples results besides my own...

[Pete156]

Yes. They work well together. See pic in attached thread

http://www.ft86club.com/forums/showp...0&postcount=10

[Calum]

Let me see if I understand everything here. The stock piece allows movement, only to the limits of what the slug will allow. Or until the top and bottom plates rotate enough to cause contact between them. Hence the differences in the ID of the top plate and the OD of the slug. One thing I'm not sure about, is there rubber on the top and bottom of the top plate?

The Perrin piece compresses the bottom piece to the point of metal on metal contact to prevent all motion.

The Whiteline piece fills in the bottom with a compressible part that will allow motion, but
dampen and reduce the motion.

The Cusco piece also closes the gaps to the point metal on metal contact, to prevent all motion.

If I'm understanding these correctly, I would not use a part that removes all motion from one of three engine/transmission mounts. That seems like a great way to break off a transmission mount. If you went to all solid mounts maybe, but even then I think you'd be running a large risk of breaking things. Not to mention the NVH.

So, am I understanding these correctly?

[Pete156]

I believe the Perrin trans mount limits the ability of the top plate to rotate over the lower, holding the trans housing from moving longitudinally. The Whiteline unit limits the trans from winding/twisting vertically IMHO. The combo doesn't take out all the motion, just most. Coupled with Perrin's shifter bushing, shifts are smooth, and I don't notice any NVH. We'll see how long it lasts and stays quiet.

[stevo_12v]

Originally Posted by Fancy

anyone use both the whitelien bushing and the perrin mount support together? Im interested in hearing other peoples results besides my own...

Another fellow Aussie has the KD 926/Perrin Stiffy combo in his car.

I'm running the CUSCO/Perrin Stiffy combo myself - less vibration but slightly more noise.

[Kuzuri]

Originally Posted by Pete156

I believe the Perrin trans mount limits the ability of the top plate to rotate over the lower, holding the trans housing from moving longitudinally. The Whiteline unit limits the trans from winding/twisting vertically IMHO. The combo doesn't take out all the motion, just most. Coupled with Perrin's shifter bushing, shifts are smooth, and I don't notice any NVH. We'll see how long it lasts and stays quiet.

Originally Posted by stevo_12v

Another fellow Aussie has the KD 926/Perrin Stiffy combo in his car.

I'm running the CUSCO/Perrin Stiffy combo myself - less vibration but slightly more noise.

this is how mine sounds. This is the whiteline bushing with the perrin mount support and the rear bushing as well....

[ame="http://www.youtube.com/watch?v=gW6CHGpaRfw"]Scion FR-S Gear Whine - YouTube[/ame]

[Hawk77FT]

Originally Posted by Fancy

this is how mine sounds. This is the whiteline bushing with the perrin mount support and the rear bushing as well....

Yep, that's it. It sounds quite ok, but sometimes I miss the somewhat quiet transmission and sometimes i quite like it. I think I might have to take the Perrin transmission out. I will see how it goes.

[Pete156]

Originally Posted by Fancy

this is how mine sounds. This is the whiteline bushing with the perrin mount support and the rear bushing as well....

My setup is not nearly as loud. Can't figure out why.

[SubieNate]

People thinking that aluminum is going to dampen vibrations better than an elastomer are a bit clueless. Aluminum is going to TRANSFER all of the vibration directly to the chassis. Half the reason the rubber is there in the stock setup is to dampen vibrations so that the car stays reasonably quiet.

Think about the grips on a high revving dirt bike. If you were riding with bare hands (not recommended), would you want all metal in the grips or a rubber layer? Soft elastomeric materials are vibration's enemy. It's why sound deadening materials are usually a constrained viscoelastic material such as butyl rubber. The vibrations go into the rubber and expend all of their energy making the long stringy soft rubber molecules vibrate just a little bit (turning the vibration energy into heat).

Yes, Aluminum is stiff. But unless it's an inordinately large chunk, it's going to ring like a bell when vibrations are applied to it. When it comes to metals, density is more important than total mass. A soft chunk of lead will vibrate 100x less than the same size chunk of aluminum. In fact, mass loaded vinyl rubber is one of the most used sound deadening materials in the world and it's basically a sheet of rubber with really tiny lead shot embedded in it.

Nathan

[Carwhisperer]

Originally Posted by Fancy

this is how mine sounds. This is the whiteline bushing with the perrin mount support and the rear bushing as well..

I'm going with this setup, minus the rear bushings for now. How's yours holding up?

[Kuzuri]

Originally Posted by Carwhisperer

I'm going with this setup, minus the rear bushings for now. How's yours holding up?

Nothing bad has happened! haha. I think its gotten quieter after some miles though... (i think ive driven proabably around 3k miles since i put it on) either that or ive just gotten used to the sound and dont notice it anymore