solid or polyurethane motor mounts?

Reply Subscribe

Thread Tools

Search this Thread

Mar 9, 2005 | 02:41 AM

OnE Ls1 2 HaTe

Thread Starter

On The Tree

Joined: Jan 2005

Posts: 169

Likes: 0

From: Modesto, CA

solid or polyurethane motor mounts?

i was just wondering if i should go with solid motor mounts on my 67 camaro? the guy from summit said i would be much happier with polyurethane mounts. what do u guys think?

Mar 9, 2005 | 06:56 AM

Villain281H

7 Second Club

iTrader: (5)

Joined: Nov 2001

Posts: 8,834

Likes: 1

From: Gainesville, Florida # of drag strips runs: ?!?!?

solid mounts always transfer more vibration than poly or rubber, but they are stronger as well. It depends on what the car will be used for. I have solid mounts in my Nova, and I don't mind the vibration (not all that much). Polyurethane are much better than rubber, so if it's a mostly street car I'd go poly.

Derek

Mar 9, 2005 | 07:35 AM

OnE Ls1 2 HaTe

Thread Starter

On The Tree

Joined: Jan 2005

Posts: 169

Likes: 0

From: Modesto, CA

well it has a big cam , and all and im gunna use it to street race if i do go solid do i use a solid motor mount too?

Mar 9, 2005 | 12:34 PM

Villain281H

7 Second Club

iTrader: (5)

Joined: Nov 2001

Posts: 8,834

Likes: 1

From: Gainesville, Florida # of drag strips runs: ?!?!?

I'd use solid mounts if you want the best holding power, or you can use the polys along with a limit strap of some sort to control movement.

Derek

Mar 10, 2005 | 08:47 PM

thebowtieislife

Teching In

Joined: Mar 2005

Posts: 34

Likes: 0

From: over there

make sure your trans mount matches your engine mounts, poly with poly, solid with solid

Mar 10, 2005 | 09:40 PM

Villain281H

7 Second Club

iTrader: (5)

Joined: Nov 2001

Posts: 8,834

Likes: 1

From: Gainesville, Florida # of drag strips runs: ?!?!?

Quote:

Originally Posted by thebowtieislife

make sure your trans mount matches your engine mounts, poly with poly, solid with solid

not true. you don't want to run a solid trans mount with solid motor mounts, otherwise you're looking at a possible cracked transmission case. you still want a little give, and run a poly transmission mount if you go with either poly or sloid motor mounts.

Mar 11, 2005 | 05:21 AM

OnE Ls1 2 HaTe

Thread Starter

On The Tree

Joined: Jan 2005

Posts: 169

Likes: 0

From: Modesto, CA

really. well i got a new poly trans mount. sould i use a limit strap on it? by the way what is a limit strap? thanx for the info.

Trending Topics

"LS7 Lifters" Max RPM's/Lift/CAM Experience

46

2.0k
Boost Wonâ€™t go Any Higherâ€¦???

15

514
Aftermarket â€œTruck Camâ€ in F-Body (LS1)

31

1.1k
( 2 ) Dynomax Ultra flow mufflers

8

442
Madaguy 1955 Nomad Build

296

37.8k

Mar 11, 2005 | 06:53 AM

Villain281H

7 Second Club

iTrader: (5)

Joined: Nov 2001

Posts: 8,834

Likes: 1

From: Gainesville, Florida # of drag strips runs: ?!?!?

a limit strap is used on the engine only. It is used on applications without solid mounts to keep the engine rotation to a minimum, and to keep the mounts from breaking. the transmission mount should need a limit strap. I'm running Moroso solid motor mounts and an energy suspension poly transmission mount on my Nova, and have had good luck with them.

Derek