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11-11-2009, 02:09 PM
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#1 |
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Registered User
Join Date: Sep 2008
Location: Calgary, AB
Posts: 32
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Polyurethane Mounts
Hi, I bought a complete cab mount kit from Energy Suspension. I've heard that it is not recommeded to use the poly mounts for the rad core support and that you should use the original rubber mounts. Anyone know anything about this? Thanks.
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11-11-2009, 02:13 PM
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#2 |
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Registered User
Join Date: Nov 2009
Location: greenville,sc
Posts: 89
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Re: Polyurethane Mounts
i heard the same thing. how much was you kit ?
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11-11-2009, 02:26 PM
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#3 |
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Registered User
Join Date: Sep 2008
Location: Calgary, AB
Posts: 32
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Re: Polyurethane Mounts
Bought it from Classic Industries. List was $65, but I had it shipped to Canada, so probably paid around $80 for it all in. Part # 34108g
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11-11-2009, 02:32 PM
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#4 |
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Registered User
Join Date: Jan 2009
Location: San Antonio, Texas
Posts: 1,374
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Re: Polyurethane Mounts
When I asked, the consensus was that the stuff that needs to give/move should be rubber. The Cab, engine and radiator supports should all be rubber, poly for the suspension parts.
__________________
1972 C10 LWB, 350/350 Deconstruction began 5/2009, mostly completed restoration, 5/2017 Last edited by dfwright; 11-11-2009 at 02:32 PM. |
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11-11-2009, 02:55 PM
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#5 |
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Registered User
Join Date: Jan 2006
Location: Take Off
Posts: 1,908
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Re: Polyurethane Mounts
I agree, poly under the cab will likely give you a stiffer ride. The point of the rubber mounts is to isolate you from the road vibrations. Poly will transmist more of that vibration into your seat. Only advantage I see is that poly will last longer. I use poly only in my suspension where you want to reduce deflection and maintain proper geometry at all times.
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11-11-2009, 03:08 PM
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#6 |
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70+ ( Old Skool Club )
 
Join Date: Nov 2003
Location: Saskatoon, Saskatchewan ,Canada
Posts: 9,108
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Re: Polyurethane Mounts
While we are on the subject of cab mounts, can you replace the cab mounts with the cab still on the truck? I do not want to dismantle my truck to change cab mounts.
__________________
1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021 |
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11-11-2009, 03:26 PM
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#7 | |
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Registered User
Join Date: Jan 2006
Location: Take Off
Posts: 1,908
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Re: Polyurethane Mounts
Quote:
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11-11-2009, 04:15 PM
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#8 |
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Registered User
Join Date: May 2006
Location: Jonesboro, AR
Posts: 916
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Re: Polyurethane Mounts
And the front cab bolts might need a tack weld ground off in order to remove them. You won't be able to easily jack it up enough to install those bushings with the bolts in place.
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11-11-2009, 04:33 PM
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#9 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Polyurethane Mounts
rubber all the way around is the way to go with daily driven trucks
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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11-11-2009, 10:11 PM
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#10 |
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Moderator
 
Join Date: May 2007
Location: Southern Cal
Posts: 19,996
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Re: Polyurethane Mounts
I have poly mounts on my cab. Not one problem.
__________________
1972 C/10 Cheyenne Super SWB. Restored, loaded, slammed. 1968 C/10 50th Anniversary LWB. Unrestored, stock, daily driver/work truck. RIP ElJay RIP 67ChevyRedneck RIP Grumpy Old Man |
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11-11-2009, 10:41 PM
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#11 |
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Registered User
Join Date: Jul 2006
Location: Central PA
Posts: 12,201
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Re: Polyurethane Mounts
I have the LMC original style cab mounts, they seem pretty nice. I have the energy leaf spring bushings and they are stiffer than stock, that's for sure... of course I haven't driven it yet...
__________________
The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer" |
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11-12-2009, 04:53 PM
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#12 |
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Registered User
Join Date: May 2007
Location: Rapid City South Dakota
Posts: 2,359
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Re: Polyurethane Mounts
I have the urethane under my support. I've never had a problem.
__________________
Turp Mcspray New life for an old 2wd, farm blazer http://67-72chevytrucks.com/vboard/s...d.php?t=505987 My Blazer build http://67-72chevytrucks.com/vboard/s...d.php?t=342299 |
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11-12-2009, 05:54 PM
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#13 |
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Registered User
Join Date: Oct 2009
Location: coupeville ,washington
Posts: 348
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Re: Polyurethane Mounts
Im glad i read this, I had a new set of poly mounts but after reading this i ordered rubber ones and put the poly ones on ebay.
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11-12-2009, 09:57 PM
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#14 |
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Registered User
Join Date: Jul 2007
Location: Salina, Kansas
Posts: 1,998
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Re: Polyurethane Mounts
i bought a kit of rubber mounts for the whole truck it wasnt a bad price.. im 185 pounds and i installed my cab mounts by myself "already gone" if u can crawl up on your back and use your knees to help lift the cab along with one arm it was easy for my to slide in the mounts and the plates.. the cab aint that heavy
__________________
1972 C-10...402/400..flowmaster 40 series 1967 Mustang 347 stroker/C-4 1966 Mustang 289/3-speed 2013 Mustang V6/6speed w/300 ponies I may be 23, but i sure do knows 67-72s are sexy! Its not MPG its smiles per gallon! build started 11/25/08 build thread: http://67-72chevytrucks.com/vboard/s....php?p=2993796 |
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