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Old 23 May 2014, 10:18 pm
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Default PT Motor Mounts

Hi,

I am a late comer to this forum and probably don't have anything exciting that will interest you readers. However, I am getting excited about the cost of replacing ALL the motor mounts in our PT about every 18 months. We've been doing this every 18-24 months since we purchased the car new in 2001. We've moved three times and have used several mechanics with the same results so I don't think its an installer problem. On the average, we spend about $275 on each replacement "binge"

I am a hot rodder with a sports (non-professional) NHRA racing license (NHRA 7776). I built, maintain and drive my vintage 63 and 64 Plymouth post coupes. which run in the mid-10's and high-8s As a kid, I spent four happy years in auto shop in high school so I kind of know my way around motor vehicles. My wife is a stone cold sober driver and thinks that any horsepower rating over 100 is unsafe and an excess of ego.

I would have dumped the PT Loser years ago, but my wife loves it more than anything else she owns. I just discovered this forum (okay, so I'm not the brightest bulb on the tree) after 12 years of PT ownership (make that Moanership I'm finally getting around to seeking a solution to the bad motor mount problem.

I saw in another thread that there are stronger motor mounts made. When installed, do they transmit a lot more - a little more - objectionable vibration to the steering wheel or the instrument panel? How can I find their source? When I questioned my current dealer about getting a different motor mount he said "Motor mount problem, what motor mount problem.?..I don't see any stinkin' motor mount problem" and went back to playing solitaire on this parts computer...

I'd really like to hear from anyone who can help me solve this issue. I'm especially interested in finding aftermarket motor mounts for our 2002 PT
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Old 23 May 2014, 10:29 pm
quicksilverdon's Avatar
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Default Re: PT Motor Mounts

You can buy windshield polyurethane in tubes and inject the open areas of the motor mounts and they'll outlast you.
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Old 23 May 2014, 10:43 pm
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Default Re: PT Motor Mounts

Ok "Dick" (pun) LOL Richard...... as you are in NHRA as well as myself I am licenced CLASS 5 LICENSE S/G and run 7.90-9.90 index and also have some experience with building track only cars....skip the sealer and get either what these guys have called for years solid mounts. Which they are not really only solid metal holding polyurethane bushings. Or use the stock mounts NEW units and fill them with #85 or 90 durometer polyurethane liquid. Then you will have a polyurethane reinforced OEM mount. BTW the kit of polyurethane to do this is usually cheaper then the tubes of weather sealer. You might also consider to do some dissecting and *cut the balance shaft chain remove it and get an ATI dampner. Bit of some money but you would be happy in the long run.

*see the complete information concerning this procedure.

Beyond that pm me because I am not going to fight debate or argue with what some think works or does not that have never tried either of my suggestions.


I actually have a semi-complete pictorial on the liquid polyurethane insertion in OEM mounts for the PT Cruiser. I just have not finished all the pictures to start a thread and show it. I have also made and sold polyurethane mounts using the OEM casting for various other vehicles including other Chrysler engines as well true solid metal only engine mounts.
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Last edited by NitroPT; 23 May 2014 at 10:47 pm.
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