If I am to use only one solid engine mount, instead of 2, which side is the ideal location.



Thanks

The ideal place is the left side, which is the side under tension.



Actually, the motor mounts seem to work almost rotationally, since they are mounted almost tangential to the torque axis. However, if you put a solid mount on the left side, the right side will try to compress. If you put a solid mount on the right, the left side will try to separate, and it very well could succeed.



Optimal would be to let the motor mounts do their own thing, and install a torque brace to control the torque axis problem. Having just one solid mount is not such a good idea, because the engine can still pivot to a degree and it will stress things a lot.

solid mount both.

Would Stock or Comp Mounts and a torque brace be better for any reason than just using solid aluminum mounts?

less chassis vibration

I put new stock mounts on mine with a Garkinlkle torque brace when the new motor went in. I'm at 385rwhp and I have no problems what so ever. I didn't want my car to ride like a logging truck...

solid mounts will vibrate the crap out of you. I think www.rotorsportsracing.com has polyurethane mounts for the FC and FD..

I have solid mounts, and they dont vibrate the crap out of me.



rotaries dont make the vibration piston motors do,



i dont think it is bad at all

I haven't felt any undue vibration even with piston engines when solid mounted. Most of these cars, admittedly, had nowhere near quiet exhaust systems. Sound is vibration as well, and when you have a Barry Grant fuel pump on full scream and a pair of 4" pipes out the back, any engine vibration pales in comparison.



What is a problem with solid mounts, is that ideally they should have some degree of freedom to them to accomodate chassis flex. Only one solid mount is bad for this reason, unless it is something like a Heim joint. When the other mounts flex, bad things can ensue. Likewise, solid transmission mounts are a bad idea especially with solid motor mounts, because any chassis flex will load the engine and transmission in bending and in torsion. I've seen broken tailhousings caused by solid-mounting everything.

perhaps not relavent, buts its about an english car and therfore amusing



http://www.tjwakeman.net/TR/Net_transCracks.htm