Polyurathane VS Rubber

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Feb 18, 2002 | 11:19 AM

TTop Tony

Thread Starter

Drifting

Joined: Jun 2000

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From: Mt Juliet TN

Polyurathane VS Rubber

I posted this in the C3 forum and didn't get any hits so I thought someone here might have tried. I'm replacing the motor and transmission mounts on my car and was wondering if anyone has had any experiences with using polyurathane over rubber. I figure poly is stronger and lasts longer. But since my car rides pretty nice I wouldn't want to add any vibration. Any advice is appreciated.

Feb 18, 2002 | 11:45 AM

JohnZ

Team Owner

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From: Washington Michigan

Re: Polyurathane VS Rubber (TTop Tony)

Poly is much harder than rubber and is designed to eliminate the compliance which isolates powertrain vibration from the frame; using poly mounts instead of rubber will definitely increase vibration and harshness.

Feb 18, 2002 | 11:52 AM

TTop Tony

Thread Starter

Drifting

Joined: Jun 2000

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From: Mt Juliet TN

Re: Polyurathane VS Rubber (JohnZ)

Thanks JohnZ thats what I was looking for. Sounds like rubber is probably the way to go.

Feb 18, 2002 | 04:18 PM

Kid_Again

Melting Slicks

Joined: Aug 2000

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From: The Garden Spot of the Garden State

Re: Polyurathane VS Rubber (TTop Tony)

...yeah, and i'd add that the puported increase in durability for poly vs. rubber is marketing hype...these cars rarely see the elements anymore....i've used rubber all around and been very happy

Feb 18, 2002 | 05:05 PM

propwash

Burning Brakes

Joined: Jul 2000

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From: Portland Or

Re: Polyurathane VS Rubber (TTop Tony)

I'll add that I used Volunteer Vette products for the bushings ( all they have is rubber ) they had the best prices . used then for WX Striping also, Get the Yellow goo to look OEM
:chevy

Feb 18, 2002 | 07:01 PM

Blkblt

Drifting

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From: Boerne Texas

Re: Polyurathane VS Rubber (TTop Tony)

Tony.

I replaced all my bushings late last year and went with rubber based on information from this forum. I have to agree with Kid_Again that most of these beasts seldom see inclement weather much unless caught in the open unexpectedly. My suspension is nice and quiet now....my A-arm bushings were original...mostly dust (not to mention a real PITA to remove!). :eek:

MileHigh66 is in the process of redoing his front end, and he is going with poly all around. He is expecting to finish up next weekend, so stay tuned.

*******************

*******************
Jeff
Ô66. Modified L72
ÒThe Silver BeastÓ
Keep on :seeya :seeya :cheers:

Feb 18, 2002 | 07:07 PM

pittsaj

Burning Brakes

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From: Alhambra CA

Re: Polyurathane VS Rubber (Blkblt)

I replaced the shocks because I thought that is what was causing the stiff ride..
Wrong..

I replaced the poly with rubber
Feels like a new car

Tony

Feb 18, 2002 | 07:40 PM

65coupe

Pro

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From: Northport New York

Re: Polyurathane VS Rubber (TTop Tony)

I replaced all the rubber on the front end and rear end on my 66 chevelle SS and the ride has never been so good. I've owned the car since 1973 and the car has just the right level of handling with no noticeable harshness in ride. I have now ordered the poly for my 65 vette with plan to install this summer. Make sure they are the graphite ones. They are as quiet as can be. I haven't used them but I'm sure the motor mounts would be just as good.
John