Vibration (metal/metal) driving me insane!!!

[Chris_Red_V8]

On the passenger side at the transmission crossover the H pipe for the longtubes sits very very close. All the time I hear metal to metal contact there, and it drives me crazy, especially in traffic.

I don't know if the Longtube is sitting higher on that side for any reason, but it really does bother me. I had some material ground off the x member for clearance, but it started back up a few weeks later.

On a related note, how much movement (lateral in the bay) should the engine have? mine seems to move a good bit which makes me suspect of the 10 year old motor mounts. They look ok, but I think I see a bit of cracking on one. The shifter in the car seems to shake quite a bit too.

If its the motor mounts to be my trouble, how much would it be to get replacements? Are poly's suitable (I know, search, but I have all the good ones in my subscribed folder)? I couldn't decide after reading all the posts. OR would something like the 92 Vert mounts be better for my application?

Has anyone else had a problem of this nature? It drives me nuts, and if I can't fix it, then I am going to go with a different brand of exhaust (all mac and flowbastid)
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[donjohn]

I have the same exact problem and it too has been getting progressively worse. it only happens in first and early second gear (at least that's when i hear it cuz the flows drown it out)

i've been hearing that the problem is the motor mounts (there was a recent thread about this problem, like last 2 days)

 

[donjohn]

http://forums.stangnet.com/showthread.php?t=540334&highlight=motor+mounts

there you go, they think it might be either tranny or motor mounts... but those are just a theory.

 

[chefster]

i would replace the mounts,it coulod solve your problem

 

[donjohn]

i would replace the mounts,it coulod solve your problem

yea, but if it didn't, it'd be a bitch of a wasted job... tranny mounts on the other hand, a lil easier