Post references:

After initial front mount change:

http://forums.maxima.org/showthread....hreadid=169505

During and after flexaning the mounts:

http://forums.maxima.org/showthread....hreadid=171189


I finally got around to replacing the front and rear motor mounts on my car hoping for bliss and freedom from vibrations. Didn't really have a difficult time doing it, it was just time consuming (took me a full day by myself). Breaking the top bolt on the rear mount didn't make for too much of a challenge (thank goodness).

OEM Nissan Engine Mount Part Numbers (courtesy of kaleb):

VG30E

Front engine mount (close to radiator):
11270-85E00 MT
11270-85E10 AT

Rear engine mount (close to firewall, a real blast to change):
11340-85E00 MT
11340-85E10 AT

3 bolts in front mount and 2 bolts in rear mount (not necessary, but I did it anyway):

01125-01421


NOTE: the lower rear bolt for the rear motor mount is 92mm long instead of 80mm as I ASSumed (one of the pics shows how "old" that particular bolt looks). IIRC, I think the 5 bolts are M12 x 1.25 and 80mm and that would leave the other one as a M12 x 1.25 and 92mm. I couldn't find any locally which is why I went through a local dealer to get them.....

For the rear mount, removal of the Y-Pipe is necessary, so here are the crush ring gasket and catalytic converter gasket part numbers:

Y-Pipe:

Cat Converter Gasket 20692-1E810
Exhaust Manifold to Pipe "crush" gaskets (need 2) 20691-85E00

Some pics of my install (Pic titles are pretty self-explanatory):

http://home.mindspring.com/~bill99gx...0Installation/

 

Once you do the tranny mounts the vibrations should be reduced even more. When I did both of my engine mounts, the idle felt smoother in a vibration sense. I drove it like that for about 1-2 months after that I did the tranny mounts. As I was backing the car out the garage I couldn't even feel the idle in the car. It was just that smooth. If it wasn't for the exhaust I wouldn't have known the engine was still on . My parents and my sister even noticed how much smoother the idle felt. Be prepared to feel the transmission engage/disengage each gear too. It isn't a jerk type motion but more like a pause. Basically it feels the same as when someone shifts gears in a manual tranny.

 

Just wondering, since replacing my mounts is on my list of things to do, how much did the mounts cost you??? Did they come with the urethane bushings or did you have to get those seperately??? Im probably going to replace the motor and tranny mounts at the same time. They're so shot its not even funny.

 

i am so frustrated with the vibration. i have replaces all mounts engine and tranny all replaced with nissan mounts. i have spent a lot of money on it. Well, still vibrates when i first take off at a light around 1200 rpms a lot and i feel the vibration whenever my fut is on the gas. But, i do not feel it in neutral or in park but i do feel a vibration at idel in reverse and in drive. Someone help....

 

In searching I noticed your frustrations with your vibration issues, which is why I'm hesitating to throw more money at the problem by replacing the transmission mounts.

 

i dontknwo what to do i know it is not wheel related because i feel the vibration at stop it has to be something i am missing. Do u think the exhaust could do this. What else could it be.. Could it be i need a tune-up. Couldnt even tell u how long that has been!!

 

The only other solution I have seen working here is replacing fuel injectors/cleaning the throttle body real good.


Unlike yourself, I still have the tranny mounts that could be replaced.


Any other tune up stuff is always a good idea. My plugs/cap/distributor/wires have been replaced fairly recently.