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Post Info TOPIC: Body mounts: Rubber v Polyurethane?


Addicted!

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Body mounts: Rubber v Polyurethane?


I've read that polyurethane last longer but can produce annoying squeaks. I'd really appreciate any opinions based on first-hand experience.

 

Also, I've seen 9 point and 11 point mounting kits advertised for my 4 door hardtop. Why the difference?



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Rod

67 Parisienne H/T, assembled by GM-Holden (sold)



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Check the service manual frame diagram it will show how many mounting points each body style has.

I'm not sure that its going to make a lot of difference rubber vs poly. Both are very dense - rubber is almost as hard as a frozen hockey puck - and then you tighten them down so very little movement.

Also most originals lasted a long time thru 4 season driving with salt etc vs now only warm, fair weather driving, so no longevity concerns.



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Maybe someone makes the polyurethane ones with graphite strands, molded in.
- saw them advertised in Muscle Car review, many years ago / apparently, designed to minimize or stop squeeks

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owned ten 1967 Beaumonts, over 3 decades


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bigholden wrote:

I've read that polyurethane last longer but can produce annoying squeaks. I'd really appreciate any opinions based on first-hand experience. 


I've heard about poly arm bushings, trans mounts, and body mounts squeaking if not lubed up adequately when installed (with the supplied grease) ... but no problems if you lube them up well.  

Convertibles have more (12) mounts than hardtops/sedans (8) for my car (1964). What year/type Parisienne have you got Rod?

Here's a '64 sedan/hardtop frame diagram:

X Frame Dimensions.jpg

 

 



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Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.



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Re-pro rubber.... have been reported.... to squash down. and not sit as original...    

 

I just replaced rear mounts and rad support with Poly  clap.gif      

 

This subject "seems" to be like asking "whats the best oil" 

 

lot of opinions  



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427carl wrote:

Re-pro rubber (inferior offshore rubber) ... have been reported.... to squash down. and not sit as original...     

I just replaced rear mounts and rad support with Poly  clap.gif      thumbsup.gifthumbsup.gif


 



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Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.



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2drpost wrote:

unless you chase down expensive NOS mounts


 ... but then you have "old" rubber, possibly past it's shelf life.



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Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.

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Addicted!

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Here's my frame Darryl. Which are the body mount points?

Scan 131.jpeg



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Rod

67 Parisienne H/T, assembled by GM-Holden (sold)



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If you have a '67 hardtop, you need a '65 - '70 Impala hardtop/sedan kit. One of the better makes is Prothane: http://prothane.com/vehicle-applications/ but there are others like Energy.

 



-- Edited by Pontiacanada on Friday 23rd of January 2015 06:53:44 AM

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Prince Edward Island

'64 Parisienne CS "barn find" - last on the road in '86 ... Owner Protection Plan booklet, original paint, original near-mint aqua interior, original aqua GM floor mats, original 283, factory posi, and original rust.



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I bought these at Car Quest100_2045.JPG



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Addicted!

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The poly mounts I'm thinking of are by Energy Suspension. Are you happy with them Carl?

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Rod

67 Parisienne H/T, assembled by GM-Holden (sold)



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bigholden wrote:

The poly mounts I'm thinking of are by Energy Suspension. Are you happy with them Carl?


        Yes    best price around and nice quality     very Happy  



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