New Motor Mounts - Poly or Rubber

[oz]

New Motor Mounts - should I use Poly or Rubber???

I am trying to eliminate some clutch chatter that has shown up since my engine rebuild, new clutch, flywheel resurfacing, etc. and have read that sometimes a torque strap and new motor mounts make a huge difference.
I did not change my mounts when I had the engine out since they looked good and am thinking I should try that before I tear the transmission out.

Can anyone give me their opinion on poly vs. rubber mounts?

I assume I only need to replace the part with the rubber (part number 6038-7 or 7P at NPD) and not the frame mount. Is this correct?

Also, how hard a job is it to change the mounts on a '69? Can I get to the mounts fairly easily with the engine in the car? I have an engine hoist I can use to lift the engine while I do the job...

THANKS!

 

[66forfun]

match trans mount to engine mount materials to eliminate poss problems w/driveline twist. should be able to change them with engine in....I think.

 

[oz]

I went ahead and bought the complete 3 piece Prothane set from Summit.

I don't think it will solve the chatter problem but it couldn't hurt.

Thanks.

 

[rbohm]

it depends on what is causing the chatter, but if you didnt change the mounts out earlier, then it is very possible that you mounts need changing now. i would go with the urethane mounts, engine and tranny. as far as changing the mounts with the engine in the car, it isnt a bad job. i did a similar mount change in a 70 falcon, and it would have gone much easier if i had left things loose until everything was inplace(live and learn).

 

[oz]

I changed out my motor mounts last night and found that the left side mount was 3/4 of the way separated from the rubber. It was not a total failure but was very close.

I forgot to remove the fan shroud when I lifted the engine so I have a bent flex fan to deal with before I take the car for a spin.