TwinTurbo.NET: Nissan 300ZX forum - Motor Mounts: Is there a procedure to confirm they are OK?
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Subject Motor Mounts: Is there a procedure to confirm they are OK?
     
Posted by Gordo 93TT Daytona on September 05, 2009 at 11:01 AM
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Message In my never ending pursuit to tighten up the drivetrain, today I am focused on insuring the motor mounts are OK.

Is there a standard test or diagnostic to confirm they are functioning properly?

So far, I have done the following:

Visually they appear OK... no torn rubber; no leaking silicon fluid. Attachment bolts are tight.

There is no discernible engine block movement/vibration at idle or under load at speed.

At rest with the brakes locked; when I load the engine with torque there are no clunks or unusual noises (as if the torque were 'lifting' the motor)

I have a bottle jack under the front of the trans. When I jack it up an inch or two, the motor rises. This is the flex in the fluid-filled mounts? Correct?

gordo


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