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Old 03-16-2016, 08:39 PM   #1
70gmcjimmy
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NP205 torque mounts

Hi K5 folks, it's been a long time coming but I'm getting a bit of momentum going on at least putting our '70 Jimmy back on the road. It will still be a work in progress too, but driving it again is still most important.

Last weekend I finished a pretty thorough rebuild of the transfer case and the newer style TH350 adapter I got from Turp McSpray a couple of years ago.

Anyway I have the new rubber crossmember mounts but have been hitting dead ends trying to find rubber torque mounts. There are neoprene ones that don't cost much and are common.

Anyone know where to get rubber ones or would it be ok to mix the two types and just order a set of neoprene ones?

Here's a couple pics of the fresh 205, please ignore the date stamp in the pics, my camera was off by a year and didn't notice it until after I downloaded them.

Any input will be appreciated.

DAC
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1970 GMC K5 Jimmy Custom 4X4 Mom's driver from 1971 to 2001!! Under rebuild!
1972 GMC C2500 Pickup owned since 1979 Needs a rest and refurbish!
1955 GMC 100 2nd design driven almost daily!

Rest In Peace Mom. "Dolly" 7/15/23 - 5/18/09
GMC driver for 30 years!

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Old 03-16-2016, 09:08 PM   #2
jaros44sr
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Re: NP205 torque mounts

I've got a set of neoprene if you want them
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Old 03-16-2016, 09:32 PM   #3
70gmcjimmy
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Re: NP205 torque mounts

Quote:
Originally Posted by jaros44sr View Post
I've got a set of neoprene if you want them
Thank-you Jim, I'll send a PM. I can't come up with a reason why the neoprene torque mounts would not be compatable with the rubber mounts, just didn't know.

DAC
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1970 GMC K5 Jimmy Custom 4X4 Mom's driver from 1971 to 2001!! Under rebuild!
1972 GMC C2500 Pickup owned since 1979 Needs a rest and refurbish!
1955 GMC 100 2nd design driven almost daily!

Rest In Peace Mom. "Dolly" 7/15/23 - 5/18/09
GMC driver for 30 years!

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Old 03-16-2016, 11:27 PM   #4
jaros44sr
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Re: NP205 torque mounts

Quote:
Originally Posted by 70gmcjimmy View Post
Thank-you Jim, I'll send a PM. I can't come up with a reason why the neoprene torque mounts would not be compatable with the rubber mounts, just didn't know.

DAC
Just give a little time, as the next 5 days are booked, I'm guessing they'll fit in a 5.00 flat box
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Semper Fi...Uncle Sam, you da man

All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
SAFETY FIRST

AS usual, off topic

They say your mind goes second, can't remember the first


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Old 03-16-2016, 11:56 PM   #5
AJs72K5
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Re: NP205 torque mounts

Careful mixing and matching. It'll cause different flex points and stress. Same goes for your motor mounts and tranny mounts. Motor and tranny should be all rubber or all poly, but not mixed.
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Old 03-17-2016, 09:53 AM   #6
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Re: NP205 torque mounts

When you say "neoprene", I assume you mean "polyurethane". If you use polyurethane mounts on the transfer case torque arm it won't cause any problems if you have rubber mounts everywhere else. All it's going to do is reduce the amount twist in the engine/transmission under heavy load.
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Old 03-17-2016, 10:34 AM   #7
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Re: NP205 torque mounts

Quote:
Originally Posted by hemi43 View Post
When you say "neoprene", I assume you mean "polyurethane". If you use polyurethane mounts on the transfer case torque arm it won't cause any problems if you have rubber mounts everywhere else. All it's going to do is reduce the amount twist in the engine/transmission under heavy load.
My bad, you're right, neoprene was stuck in my mind because I just returned from a fishing trip....10 degrees
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Semper Fi...Uncle Sam, you da man

All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
SAFETY FIRST

AS usual, off topic

They say your mind goes second, can't remember the first


Jim
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Old 03-17-2016, 07:48 PM   #8
70gmcjimmy
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Re: NP205 torque mounts

Quote:
Originally Posted by jaros44sr View Post
Just give a little time, as the next 5 days are booked, I'm guessing they'll fit in a 5.00 flat box
Thanks, no problem. I have to do some cleaning under there and some paint before I can install the transfer case and transmission.

Quote:
Originally Posted by AJs72K5 View Post
Careful mixing and matching. It'll cause different flex points and stress. Same goes for your motor mounts and tranny mounts. Motor and tranny should be all rubber or all poly, but not mixed.
The engine and transfer case (tranny too) lower mounts are all new rubber ones. I would use rubber torque mounts but have had no luck finding them so since this truck isn't going to be high horsepower or ridden hard on trails maybe it will be OK. It definitely is going to get driven a lot and ride trails though.

Quote:
Originally Posted by hemi43 View Post
When you say "neoprene", I assume you mean "polyurethane". If you use polyurethane mounts on the transfer case torque arm it won't cause any problems if you have rubber mounts everywhere else. All it's going to do is reduce the amount twist in the engine/transmission under heavy load.
Quote:
Originally Posted by jaros44sr View Post
My bad, you're right, neoprene was stuck in my mind because I just returned from a fishing trip....10 degrees
That was actually my bad Jim and Hemi43 as I mis-informed in my first post "neoprene"! Sorry about that guys! Oldtimers disease again on my part.

Thank-you all for the help and advice.

DAC
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1970 GMC K5 Jimmy Custom 4X4 Mom's driver from 1971 to 2001!! Under rebuild!
1972 GMC C2500 Pickup owned since 1979 Needs a rest and refurbish!
1955 GMC 100 2nd design driven almost daily!

Rest In Peace Mom. "Dolly" 7/15/23 - 5/18/09
GMC driver for 30 years!

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Old 03-17-2016, 11:49 PM   #9
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Re: NP205 torque mounts

For what it's worth, I'm running rubber motor and transmission mounts and polyurethane on the torque arm.
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Old 03-18-2016, 07:54 PM   #10
70gmcjimmy
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Re: NP205 torque mounts

Quote:
Originally Posted by hemi43 View Post
For what it's worth, I'm running rubber motor and transmission mounts and polyurethane on the torque arm.
I appreciate that! It boosts the confidence way up knowing that your beautiful truck has the same mounts!

Thanks---DAC
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1970 GMC K5 Jimmy Custom 4X4 Mom's driver from 1971 to 2001!! Under rebuild!
1972 GMC C2500 Pickup owned since 1979 Needs a rest and refurbish!
1955 GMC 100 2nd design driven almost daily!

Rest In Peace Mom. "Dolly" 7/15/23 - 5/18/09
GMC driver for 30 years!

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Old 03-18-2016, 08:54 PM   #11
jaros44sr
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Re: NP205 torque mounts

X2, I feel better offering them to you
__________________
Semper Fi...Uncle Sam, you da man

All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
SAFETY FIRST

AS usual, off topic

They say your mind goes second, can't remember the first


Jim
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