THSCC Forums

Any of you used Energy Suspensions polyurethane motor mount inserts? I ordered a complete set of 4 mounts for the SE-R rallycross car and am ready to reinstall the engine. Problem is that the new mounts have "generic" instructions that are totally worthless. Some of the new urethane mounts appear to be a light press fit into the mount housing AFTER the old rubber and steel support ring is removed. Other mounts would be a light press-to-clearance fit even if mounted inside of the old steel ring (if I cut all the old rubber out and left the old ring in place).

I would rather have old cracked rubber mounts than to cut the old mounts up and then not be able to use the new inserts.
Have any of you had similar experiences? It is possible that I am not able to accurately measure the existing housing bores because both the housing and the insert steel ring have chamfers and it is impossible to get the calipers into the actual bore. I am assuming that it would be a mistake to use the inserts unless they were a pres fit in the bore.
Charlie G

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1998 BMW Z3
1987 BMW 325is
2000 BMW
1996 F250 Turbo Diesel

I have found you do have to go thru all that in order to use some of their inserts. Cut old out, press ring out. I have been sucessful of stiffening up mounts on old/worn out mounts by just using window weld and filling the voids up. Put down a layer of aluminum foil, lay mount down on side, fill up and let dry.

Good luck

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2005 Mazda RX8 STX 11

NCR Solo Chair & Cape Fear Chapter Coordinator
http://www.ncrscca.com

x2. We did this on our Lemons car and it made a big difference. Whatever you do though, make sure you do all the mounts. We only did three of ours and skipped the back one because it was a real pain in the butt to get to. Turns out it might have cost us 1st place at the last May CMP race as the rear mount was so bad the car would pop out of 2nd with the engine under any kind of load. It was twisting so bad it ripped the stamped steal bracket for the front motor mount as well. Definitely a bad thing in an endurance race where you spend 80% of your time between 20 and 60 mph.

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Stephen Westerfield
2009 Infiniti M35 | 2007 Honda Fit Sport | 2005 Ford Mustang GT |2000 GMC Sierra |1992 Acura Integra LS | Super Westerfield Bros Acura Integra