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Just thought I would post this to help others who have the painful vibration issues associated with the zed. I would suggest that after you have had your wheels checked and re-balanced a couple of times and the vibration is still there, that you have your GEARBOX REAR MOUNT checked/changed - and BEFORE you change tyres, swap wheels, remove propshaft, replace centre bearing etc. It's quite a simple job and the mount is not expensive - somewhere around £50.00 I believe. :D

 

Here is a picture from my 1990 Jap import 2+2 and as you can see it's completely collapsed.

KIF_1332.jpg

 

Now you may think looking at this that I had a bad vibration problem - not really! On some days the car was fine, on other days only some vibration at throttle off, and or around 55-60mph - but on other days - I had vibration like I had square wheels almost. So it defies reasonable logic so far as I can tell.

 

Suddenly my 1990 car feels 2008 again! :dance:

 

It is a good idea to do the centre bearing whilst your down there with the exhaust off but maybe you want to make that decision following an inspection - I would DEFINATELY do the rear mount first if it has not been done previously.

Featured Replies

Top tip fella..

 

it does look knackered and i'm surprised it was as intermitent as it was....

 

Well done though...

 

Cheerz

 

Neil

Can you get a poly bushed gearbox mount my mate has an uprated one on his s13 maybe they do one for the z32 as well or maybe the s13 one will fit only an idea.:)

Wow, now that is interesting, I have vibration, done the wheels, alignment etc and all is fine. Same question as above though....for a non mechanical minded person such as meeee, how difficult is it to change them.. I do have use of a pit which may well help.

  • Author

The 64 knuckle question is - how sure are you you can get the six nuts off of the turbo elbow to down pipes without shearing or stripping the studs!!

For me it did not matter as I was doing a full turbo back cat delete at the same time - but I still sheared 2 of the studs. It would have meant another day under the car drilling out the studs and replacing with bolts/nuts if I was not replacing the damn things.

 

Apart from that - the main issue is getting the car off the ground high enough and SAFELY - for you to spend time under there banging around.

 

Check out Groovers fab write up here:

http://www.pexcom.com.au/z32cms/e107...hp?content.420

 

Cheers

 

AndyGP

Oooo you should have bought the nismo mount, these are designed to prevent the mount from sagging over time like the oem one does. The edge of the rubber is shaped diagonally on both ends which gives it more strength, i think this was one of nissans design faults. Will be fine for ages though so not to worry.

Nismo mounts, where can I buy them j1mmyt. And do they do both. i.e gearbox rear mounts and centre bearings.

Ta

You can buy the nismo mount on ebay also, the postage isnt cheap though as they are from the states. Another supplier would be CZP(they use ups cheaper postage and alot less chance of getting stung on duty) and Z1 (as mentioned above)

Edited by j1mmytt

How low does it have to go before it vibrates? I have looked at mine and have 2nd hand one, they both look the same i.e not as low as the knackered one shown, probably has 8-9mm clearance between rubber and bottom.

  • Author

As soon as the prop is out of alignment - thats it - the begining of the end so to speak - so not much! And as soon as the rear gearbox mount is out - then that will ultimately start to effect your centre bearing (sooner or later).

 

The vib's may just not be noticable yet - it sometimes is a good thing to take a ride in another ZED at some point - it's amazing what you can get used to without realising it!!

Can you get a poly bushed gearbox mount my mate has an uprated one on his s13 maybe they do one for the z32 as well or maybe the s13 one will fit only an idea.:)

 

The Nismo rear gearbox mount mentioned here is actually designed for the 240SX and just happens to fit the 300ZX minus, if memory serves me right a couple of fittings for the standard exhaust so its a possibility.

  • 1 month later...

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