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I will post a writeup and diy tonight. Sorry guys for making you wait.

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Old 03-07-2010, 02:10 PM   #451 (permalink)
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I will post a writeup and diy tonight. Sorry guys for making you wait.
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Old 03-07-2010, 02:55 PM   #452 (permalink)
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I will post a writeup and diy tonight. Sorry guys for making you wait.
DIY & Review, NOW!
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Old 03-07-2010, 02:55 PM   #453 (permalink)
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I will post a writeup and diy tonight. Sorry guys for making you wait.
I'm really interested to see what your findings were. Especially since these guys are only like 30 mins down the road from me.
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Old 03-07-2010, 05:54 PM   #454 (permalink)
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Uh oh. I had really high hopes for this

Are you going to post the review in the original thread?
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Old 03-07-2010, 09:47 PM   #455 (permalink)
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OK, so here's the review as promised.

Installation:

It was extremely easy. Its 6 bolts and its done. Very easy access, doesn't require any special tools, however you do need to find a way to support the transmission so it doesn't sag when you take off the mount.

This is what you are looking for under the car. Its right by where the driveshaft starts:



Support the transmission somehow. We used this guy, but you can use whatever as long as its sturdy enough to hold up the weight:


Remove the bolts:


Stock Mount:



Side by side comparisons.



Removed:


Z1 Mount on. Make sure the "arrow point" is pointing towards the back of the car:



After that, just put the bolts back in and your are done.


Thoughts:

Alright, so did it make a big difference? Absolutely. On the pro side, it made shifts much more positive. Shifting feels very consistent in every situation. It feels crisper and more exact when you put it into gear. You get this sensation like no matter what you are doing; accelerating or decelerating, the shifter is attached to something that is completely solid instead of something that has some give to it. As expected, that off-throttle jerking in low gears has been reduced. Instead of getting a sort of reverberating stop-go jerkiness that you get with the stock mount, you get this "load, unload, over" type of a feeling. Its hard to describe. Think of it this way... with the stock one it feels like the transmission is moving back and forth as it loads with the engine. With the hardened mount it feels like the whole car is a solid piece being acted on by the loading/unloading of the engine. You still feel it jerk, but it does it less and less abruptly.

Now the problem is this... and you folks knew there was a problem coming.

We know our engine and tranny are notoriously coarse as we go up in the RPMS, well guess what...you can hear and feel EVERYTHING. You can hear the synchros speeding up and slowing down when you put the clutch in and out. You can hear every little engine sound, clutch sound and chassis sound X100. Sounds like I have straight cut gears inside the car. If that wasn't bad enough, as you can imagine, huge amounts of vibration is transferred into the cabin. When I got home after the install, my whole body had that tingling sensation you get when you hold on to something tha'ts vibrating for too long. Just revving the car in neutral shakes you like a massage chair. My friend was joking that its a nice massage mod and that maybe girls would really love it.

I talked to Z1 and they said to give it a few hundred miles to let it bed in because it should get a little better. I drove around 100 miles this weekend and it has not really improved much. I am going to leave it in for the week and see if there is any improvement in NVH levels. It feels so good for shifting that I really don't want to let this one die. Please keep in mind that it is a product in development and it still needs to be altered a bit before production. I think if we made it less stiff it would get rid of a lot of the NVH, but it will also feel more like the stock one.

I think this would be excellent on a dedicated race car, but as it is right now, I don't feel the level of NVH is acceptable for a street driven car. Perhaps what we need are shifter and differential bushings + a softer version of the transmission mount. I am not happy that the side effects were so bad since shifting feels excellent. Way more composed and consistent than the stock one. Z1 said they would look into lowering the stiffness of the bushing if it's necessary. He will probably chime in and tell us what the plan is.
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Old 03-07-2010, 09:57 PM   #456 (permalink)
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Great review, hopefully Z1 can get this worked out
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Old 03-07-2010, 10:07 PM   #457 (permalink)
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This was the "comfort" version, right? Can't imagine what the race version would be like Hopefully Z1 can get this dialed in.
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Old 03-07-2010, 10:24 PM   #458 (permalink)
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Dang, sad to hear about the NVH problems. I was really going through for that mount... I just hope that RCZ won't have any more problems and I'll keep my hopes up....
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Old 03-07-2010, 10:28 PM   #459 (permalink)
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Thanks for the review, Raul. I kind of figured there were going to be some significant NVH issues once I knew you wanted to talk to Z1 before you posted.
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Old 03-07-2010, 10:34 PM   #460 (permalink)
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I don't mind the noise as much as I would hate the increase in the vibration
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Old 03-07-2010, 10:36 PM   #461 (permalink)
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Hey guys,

I've looked through some reviews of other people with the 370z version of the mount and the common factor is that it was a great installation and there was a small price in comfort. Others claim that after a FEW hundred miles, there were no issues. I'm hoping this NVH issue will go away soon, I'm sure we all are...

By the way, getting my bridgestone RE-11s in two days...Can't wait to swap out the OEMs for those....
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Old 03-07-2010, 10:37 PM   #462 (permalink)
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I don't mind the noise as much as I would hate the increase in the vibration
If you've ever been in a car with a really noisy transmission I think you'd change your mind (for a daily driver, anyways). The noise gets very annoying and the vibration just takes it over the top.
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Old 03-07-2010, 10:54 PM   #463 (permalink)
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sounds like the right part for me! you know who to look up if you take it off... thx for the great review
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Old 03-08-2010, 12:13 AM   #464 (permalink)
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You guys are all welcome. I wish install hadn't been as much as it was, apparently there was a rule I didnt know about where they charge me one hour minimum even though it was 10 minutes of work. Some of the quirks of testing stuff out, it doesn't always go perfectly. Its all good though, its all part of the job

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Old 03-08-2010, 05:46 AM   #465 (permalink)
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yup thats why its better to do these things yourself. great to hear the mount helped.
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