Subject	Something else to consider >>
Posted by	LitlElvis on March 27, 2019 at 10:50 AM
	This message has been viewed 471 times.
In Reply To	Drivetrain vibration at high speed causes? posted by ZEngineer on March 26, 2019 at 10:24 PM
Message	I've had a few customers who installed my polyurethane transmission mount but retained the stock motor mounts and they reported unbearable NVH. Switching to poly motor mounts reduced the NVH considerably. It seems the OE mounts allow the engine/transmission to move too much and all of that movement gets focused into the stiffer poly trans mount. The Nismo transmission mount has more rubber contact to its metal shell than the OE mounts, so one should assume the force/deflection for the Nismo is most likely stiffer than the OE mounts. Maybe you are experiencing a similar problem if you are also running OE motor mounts?
Follow Ups	Drivetrain vibration at high speed causes? - ZEngineer 22:24:18 03/26/19 The mount is certainly not part of the solution, it's not - Bernie (NoVA) 22:53:03 03/26/19 I have stock NISSAN mounts on hand - can ship (n/m) - Bernie (NoVA) 22:53:29 03/26/19 I went back to an OEM 2pc drive shaft after running a 1pc - Polish 23:09:13 03/26/19 Thanks. That’s exactly the kind of experience I needed (n/m) - ZEngineer 23:12:50 03/26/19 I did the same thing. (n/m) - ZUL8TR 08:35:08 03/27/19 Where'd you find an OEM 2 piece? Used? New? I think I would - nissubaru 09:09:05 03/27/19 I kept mine, but I've seen several used for sale - Polish 10:45:08 03/27/19 it is ridiculously easy to have a shaft tested for balance - LJZTT 16:29:09 03/27/19 I'll know more once I do the trans mount and fluids. - nissubaru 08:41:53 03/28/19 Same - Metacom 11:15:38 03/27/19 the 2pc just has a higher tolerance for mis-alignment - LJZTT 16:36:18 03/27/19 I'm willing to bet most people who experience no such issues - LJZTT 16:39:56 03/27/19 Seems like I’ll be looking for OEM DS and trans mount (n/m) - ZEngineer 23:22:20 03/26/19 For a new CSB - Polish 00:22:33 03/27/19 I respect your ability to go rogue! :-) (n/m) - ZEngineer 00:30:50 03/27/19 Get the correct mount. 1 piece here for > 50000km - vorpalZed 23:45:41 03/26/19 Understood. If anyone has a good used one, email me pls (n/m) - ZEngineer 00:25:13 03/27/19 Install an automatic mount. Or go fancy and install - MixManMash 03:19:02 03/27/19 I’m surprised the U-joint can’t make up for the difference (n/m) - ZEngineer 03:28:13 03/27/19 I'd also check the u-joint for binding. That can cause a - MixManMash 03:57:44 03/27/19 Only the AT TT is the 40p00 mount since it's heaviest - Bernie (NoVA) 17:44:01 03/27/19 Woah, I didn't know the Nismo mount was no good - platinumist 10:17:58 03/27/19 If you want an upgrade, go with the automatic or the BDE - MixManMash 11:18:46 03/27/19 It's not that it is no good, it simply is not designed for - LJZTT 16:24:15 03/27/19 BDE Ordered lol. - platinumist 13:29:03 03/28/19 Check the runout at either end of the shaft. - Gordo NA2LS Daytona 09:51:45 03/27/19 Something else to consider >> - LitlElvis 10:50:59 03/27/19 This makes sense to me - Polish 12:06:06 03/27/19 that plus it is super easy to do what I did, especially if - LJZTT 16:27:31 03/27/19 OE engine mounts are a waste of money. - slayer fan 17:21:42 03/27/19 Steel, aluminum or CF driveshaft? (n/m) - Ghoztt 21:24:30 03/27/19 Steel, does it matter? (n/m) - ZEngineer 22:13:49 03/27/19 Each material has it's own harmonics or resonating frequency - Ghoztt 03:55:00 03/28/19 If the system is marginal enough - ZEngineer 13:00:50 03/28/19 Sent you an email (n/m) - Ghoztt 20:06:28 03/28/19 honestly the biggest benefit to going to 1pc over OEM 2pc - LJZTT 17:18:05 03/28/19 Balance it with hose clamps. No, it's not ghetto - Zxpress 19:16:39 03/28/19 That’s ghetto...I love it! :-) (n/m) - ZEngineer 10:38:10 03/29/19 Eat less beans. (n/m) - Yeehaw 09:55:16 03/30/19 Note when replacing the 2 piece DS the center support mount> - ZUL8TR 07:09:50 04/02/19
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