[s-cars] New motor mounts

[Jerry Scott]

As a one time engine mount designer for GM, the two mounts may have the 
same steel inserts, but different rubber compounds.  This could account 
for the two different part numbers. Engine mount compound tuning is very 
important to the ride control engineers,  but for the untuned butt it's 
not all that important in an older car. Each mount has a specific spring 
rate and damping factor, but if all of the other rubber bushings  are 
shot, it's not that critical.
Jerry

chris chambers wrote:

>Sean,
>
>My new motor mounts arrived Tuesday, I plan on replacing them
>this weekend (If I can fix my jack).
>
>There were two different part numbers for each mount, but they look
>the same to my untrained eye.
>
>Did yo notice anything different between the two mounts?
>I assume you lifted your car up and put it onjack stands right?
>
>Thanks
>Chris
>
>--- Sean Douglas <quattro20v at telus.net> wrote:
>
>  
>
>>Installed both engine mounts today, not too hard, took me about 3
>>hours
>>including wrestling with the belly pan.
>>
>>Driver side, easy.
>>
>>The turbo side one is not that hard to get out, a long extension with
>>a
>>u-joint on the end and you can reach down between the turbo and
>>exhaust
>>manifold to get the top bolt. A socket will not reach the bottom
>>nuts,
>>so a combo wrench is used. It would be easier with a gear wrench.
>>
>>Make sure to support the engine with a floor jack under the oil pan.
>>
>>Hint, after removing the hardware, jack up on the engine to lift it
>>as
>>high as will go, this will give you more clearance to maneuver the
>>mounts out.
>>
>>Shifting has improved, still not as tight as I want and the trans
>>mounts
>>were done about 2 months ago.
>>
>>Looks like a new snub mount is on the horizon.
>>
>>Sean Douglas
>>
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>>
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