poly vs. oem rubber mounts. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

RED72blazer · 03-30-2009, 01:48 PM

I want to here from you guys that replaced your body mounts. Did you use poly or oem rubber? if you had to do it again would you make the same choice? Do you wish you had gone with rubber or vice versa?

RckyMntnKng · 03-30-2009, 02:35 PM

Really like my new polys...feels firmer and last longer haha

Burt4x4 · 03-30-2009, 03:11 PM

installed poly back in 94

never had an issue..

bsgmcc20 · 03-30-2009, 03:22 PM

Ok so its 1987 and we are in new york building an old NESEG truck into a 4x4. We didnt have the money at the time. So we had Hockey pucks laying around. Hmmmm Body mounts drill and insert. They lasted 4 years.

I try it a few years ago and they lasted 6 months. So i installed Poly and they have been in for along time now.

Its all in what you want to do?

RED72blazer · 03-30-2009, 03:55 PM

Quote:

Originally Posted by bsgmcc20

Its all in what you want to do?

this thing will not be wheeled hard. Mostly snowy logging roads and the occasional mud pit. Imagine it's 1972 and you are outfitting your new Blazer. i'm going to go with skinny tall tires. I don't want it to ride hard.

Also I should mention I have the poly kit already, but it doesn't have bolts.

bsgmcc20 · 03-30-2009, 04:08 PM

Quote:

Originally Posted by RED72blazer

this thing will not be wheeled hard. Mostly snowy logging roads and the occasional mud pit. Imagine it's 1972 and you are outfitting your new Blazer. i'm going to go with skinny tall tires. I don't want it to ride hard.

Also I should mention I have the poly kit already, but it doesn't have bolts.

Fire up the poly kit and put her in. Anti seize the bolts or get some poly lock bolts so if you twist and break one you can get them off if your out in the bushes.

sounds sweet

bouncytruck · 03-30-2009, 04:09 PM

I've heard positives about both. Personally, I'd probably go with the rubber to help smooth the ride as much as possible since I won't be wheeling. If I was building a crazy, hard-core machine like Burt's, I'd probably install the tougher poly mounts. I've also read here on the board you need to coat the poly mounts with something to stop them from squeeking

Burt4x4 · 03-30-2009, 04:56 PM

Poly-Sqeeke
I have heard about it but never heard it

The main reason is the EnergySuspension poly I bought (black) were impregnated (sp?) some king of poplygraphite..I would have to look it up to get the proper term, some kind of anti-squeeke process Energy Suspension does. I think the red color is pure poly and may be the source of sqeekey mounts.

cparman · 03-30-2009, 06:06 PM

I agree with Bouncy, I do not like poly anything. The rubber mounts work just fine, and allow someone else to wonder what that noise ( suspension bushings ) or what that vibration is. I want a Blazer/C-10 that drives like my wifes new Lexus, not like a race car. Ok, so I am dreaming a bit, but you get the picture.

Cap'n Hook · 03-30-2009, 07:14 PM

If you go poly, you must grease them before installing, or they WILL squeak! But they will firm up the body mounts!

vtblazer · 03-31-2009, 05:26 AM

Factory replacement rubber mounts are a much better fit IMO, made to fit the application.

A lot of the poly sets I've seen are thinner and more generic, I've used em but won't ever again after seeing/installing the last rubber set.

Jtrux · 03-31-2009, 10:31 AM

Quote:

Originally Posted by vtblazer

Factory replacement rubber mounts are a much better fit IMO, made to fit the application.

A lot of the poly sets I've seen are thinner and more generic, I've used em but won't ever again after seeing/installing the last rubber set.

Good to know, too bad I already installed the energy suspension poly's.

snj8198 · 03-31-2009, 10:39 AM

Jtrux- how did your install go? did you experience any of the issues VTblaze mentioned?

teamradrz1 · 03-31-2009, 11:35 AM

I also installed energy suspension Poly in my Blazer and I haven't been able to drive it much but fitment was perfect and I've heard no squeeks.

RED72blazer · 03-31-2009, 01:11 PM

I was waiting for VT to chime in.

my buddy offered to buy the poly mount kit, so I ordered rubber today from GMCpauls.

farmboy4ever · 03-31-2009, 02:15 PM

poly is fine for body but go rubber for the springs. they allow for more flex. even on old snowy logging roads that little extra helps.

litebulblsc · 03-31-2009, 04:29 PM

Quote:

Originally Posted by vtblazer

Factory replacement rubber mounts are a much better fit IMO, made to fit the application.

A lot of the poly sets I've seen are thinner and more generic, I've used em but won't ever again after seeing/installing the last rubber set.

Do you know what brand polys you were running? The energy suspension ones sound to be good. Perhaps you got different ones that weren't as good?

View Poll Results: poly or oem rubber body mounts
poly mounts, hard like rock.	12	60.00%
rubber mounts, lasted long enough.	8	40.00%
Voters: 20. You may not vote on this poll

03-30-2009, 01:48 PM	#1
RED72blazer urban fourwheelin Join Date: Aug 2002 Location: Seattle Posts: 1,007	poly vs. oem rubber mounts. I want to here from you guys that replaced your body mounts. Did you use poly or oem rubber? if you had to do it again would you make the same choice? Do you wish you had gone with rubber or vice versa? __________________ 1972 K5 Blazer with Cummins 4BT, NV4500 swap in the parts gathering stage.

03-30-2009, 02:35 PM	#2
RckyMntnKng Registered User Join Date: Apr 2007 Location: Meridian, Idaho Posts: 316	Re: poly vs. oem rubber mounts. Really like my new polys...feels firmer and last longer haha __________________ 71 Jimmy: D60/14BFF, 9"F/11"B Lift, 350-350-203-205, Crossover Hydro steering, Beadlocks, Tube stuff and the bottomless cooler

03-30-2009, 03:11 PM	#3
Burt4x4 Registered User Join Date: Feb 2000 Location: Modesto, CA Posts: 1,842	Re: poly vs. oem rubber mounts. installed poly back in 94 never had an issue.. __________________ 1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks

03-30-2009, 03:22 PM	#4
bsgmcc20 Im afraid of purple hangers.. Join Date: Oct 2008 Location: Central Cal Posts: 108	Re: poly vs. oem rubber mounts. Ok so its 1987 and we are in new york building an old NESEG truck into a 4x4. We didnt have the money at the time. So we had Hockey pucks laying around. Hmmmm Body mounts drill and insert. They lasted 4 years. I try it a few years ago and they lasted 6 months. So i installed Poly and they have been in for along time now. Its all in what you want to do?

03-30-2009, 04:09 PM	#7
bouncytruck SKINNY TIRES RULE! Join Date: Sep 2001 Location: Bothell, WA Posts: 11,038	Re: poly vs. oem rubber mounts. I've heard positives about both. Personally, I'd probably go with the rubber to help smooth the ride as much as possible since I won't be wheeling. If I was building a crazy, hard-core machine like Burt's, I'd probably install the tougher poly mounts. I've also read here on the board you need to coat the poly mounts with something to stop them from squeeking __________________ bouncytruck 1972 K5 The Hauler 1994 K1500 Suburban The Daily2010 Kia Soul Wife's Ride2014 Fiat 500L

03-30-2009, 04:56 PM	#8
Burt4x4 Registered User Join Date: Feb 2000 Location: Modesto, CA Posts: 1,842	Re: poly vs. oem rubber mounts. Poly-Sqeeke I have heard about it but never heard it The main reason is the EnergySuspension poly I bought (black) were impregnated (sp?) some king of poplygraphite..I would have to look it up to get the proper term, some kind of anti-squeeke process Energy Suspension does. I think the red color is pure poly and may be the source of sqeekey mounts. __________________ 1972 K5 MPFI454/Sm465/Np205/D60/14FFd/Re-Centerd H1s w/Swamper Iroks

03-30-2009, 06:06 PM	#9
cparman sharp as a marble Join Date: Jan 2007 Location: atlantic beach,florida Posts: 1,082	Re: poly vs. oem rubber mounts. I agree with Bouncy, I do not like poly anything. The rubber mounts work just fine, and allow someone else to wonder what that noise ( suspension bushings ) or what that vibration is. I want a Blazer/C-10 that drives like my wifes new Lexus, not like a race car. Ok, so I am dreaming a bit, but you get the picture.

03-30-2009, 07:14 PM	#10
Cap'n Hook Workin to live... Join Date: Jun 2003 Location: Texas Hill Country Posts: 261	Re: poly vs. oem rubber mounts. If you go poly, you must grease them before installing, or they WILL squeak! But they will firm up the body mounts! __________________ Jason

03-31-2009, 05:26 AM	#11
vtblazer Registered User Join Date: Oct 2003 Location: Central Vermont Posts: 8,537	Re: poly vs. oem rubber mounts. Factory replacement rubber mounts are a much better fit IMO, made to fit the application. A lot of the poly sets I've seen are thinner and more generic, I've used em but won't ever again after seeing/installing the last rubber set.

03-31-2009, 10:39 AM	#13
snj8198 Registered User Join Date: Feb 2007 Location: Star Valley, WY Posts: 2,038	Re: poly vs. oem rubber mounts. Jtrux- how did your install go? did you experience any of the issues VTblaze mentioned? __________________ Steve 1971 GMC Longbox. Full Roller Stroker 489 w/ FiTech EFI, Chris Straub Cam/NV4500/205/D60/14B w. Grizzly Locker and 4.11's. 2" Lift on 33's

03-31-2009, 11:35 AM	#14
teamradrz1 Registered User Join Date: Apr 2005 Location: Gresham, OR 97080 Posts: 499	Re: poly vs. oem rubber mounts. I also installed energy suspension Poly in my Blazer and I haven't been able to drive it much but fitment was perfect and I've heard no squeeks. __________________ 1971 Chevy Blazer CST 4X4 2012 Camaro 2SS/RS 2007 Avalanche 4X4

03-31-2009, 01:11 PM	#15
RED72blazer urban fourwheelin Join Date: Aug 2002 Location: Seattle Posts: 1,007	Re: poly vs. oem rubber mounts. I was waiting for VT to chime in. my buddy offered to buy the poly mount kit, so I ordered rubber today from GMCpauls. __________________ 1972 K5 Blazer with Cummins 4BT, NV4500 swap in the parts gathering stage.

03-31-2009, 02:15 PM	#16
farmboy4ever Registered User Join Date: Aug 2007 Location: mt. angel oregon Posts: 11	Re: poly vs. oem rubber mounts. poly is fine for body but go rubber for the springs. they allow for more flex. even on old snowy logging roads that little extra helps. __________________ duct tape+bailing wire = trail fix if it aint broke it will be whoa hillbilly

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