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Are my motor mounts shot?

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Old 08-20-2014, 04:35 AM
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Default Are my motor mounts shot?

I've been thinking of swapping out my motor mounts for the prothane ones. Is there a way to actually test if they are shot? I think I can feel some vibration going on the highway in 6th when my cam is near it's surging point... Could the mounts be the case? Are they impossible to change on your own on a 2000 SS that's been lowered 1.5" without having a lift?
Old 08-20-2014, 08:50 AM
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Well when I installed my LTS my motor mounts where pretty much shot and I didnt notice any vibration before. Does your car already have LT'S or the stock manifolds? Beacause they have to come out of the way to replace the mounts. Might be a good time to put some LT'S on while you in thier if you still have the stock manifold's and a lift makes life easier but not a must have to do the mounts.
Old 08-20-2014, 11:03 AM
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Originally Posted by Chris25
Well when I installed my LTS my motor mounts where pretty much shot and I didnt notice any vibration before. Does your car already have LT'S or the stock manifolds? Beacause they have to come out of the way to replace the mounts. Might be a good time to put some LT'S on while you in thier if you still have the stock manifold's and a lift makes life easier but not a must have to do the mounts.
I have 1 7/8 ARH. They are HUGE... Looks like I'll have to ask New Era to do it...
Old 08-20-2014, 12:06 PM
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Ya thats why I did the poly mounts with my LTS didnt feel like having to tear all that apart again.
Old 08-20-2014, 12:14 PM
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As you may know worn motor mounts will allow the engine to move more. This means less vibration transmitted to the frame/body. My motor mounts were shot after I installed my clutch. See how much your shifter moves to the side when you get on the throttle. I actually have solid motor mounts now. Exhaust did not need to be touched for replacement but I would recommend a lift.
Old 08-20-2014, 06:10 PM
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Originally Posted by SoFla01SSLookinstok
As you may know worn motor mounts will allow the engine to move more. This means less vibration transmitted to the frame/body. My motor mounts were shot after I installed my clutch. See how much your shifter moves to the side when you get on the throttle. I actually have solid motor mounts now. Exhaust did not need to be touched for replacement but I would recommend a lift.
My shifter shakes in neutral...
Old 08-20-2014, 08:33 PM
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Originally Posted by scotty2000ss
My shifter shakes in neutral...
Your mounts are probably pretty worn. You would only benefit by changing them out. I remember after the new clutch my car didn't feel right. Like it had less power or something. I figured out it was worn motor mounts with how much the shifter was moving. Good luck man!
Old 08-21-2014, 05:45 AM
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Thanks! Yea I'm sure they are shot. Now that you mention it the car did feel different after my new clutch. I'll take a look at the mounts this weekend and see if it's something I wanna attempt on my own.
Old 08-21-2014, 07:39 AM
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Originally Posted by scotty2000ss
Thanks! Yea I'm sure they are shot. Now that you mention it the car did feel different after my new clutch. I'll take a look at the mounts this weekend and see if it's something I wanna attempt on my own.
They really are not that terrible to do just really time consuming, having a friend helph makes life easier trying to push and pry the motor in place.
Old 08-21-2014, 05:34 PM
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Originally Posted by Chris25
They really are not that terrible to do just really time consuming, having a friend helph makes life easier trying to push and pry the motor in place.
I may try it on my own. New era quoted a price of 380$...
Old 08-21-2014, 06:01 PM
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I went to the track a few times and couldn't hook. My motor mounts and trans mount ended up being toast. I new something was up when I would do a slow wot roll. Felt like the whole motor and trans shifted under the car and made a small clunk noise. So I looked under the hood and watched the motor want to torque itself out of the engine bay after yanking the throttle. Replaced with poly mms and stock rubber trans mount. All better now.

IDK your mechanical background but its not a very hard job. Patience like anything.
Old 08-21-2014, 06:10 PM
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Originally Posted by senicalj4579
I went to the track a few times and couldn't hook. My motor mounts and trans mount ended up being toast. I new something was up when I would do a slow wot roll. Felt like the whole motor and trans shifted under the car and made a small clunk noise. So I looked under the hood and watched the motor want to torque itself out of the engine bay after yanking the throttle. Replaced with poly mms and stock rubber trans mount. All better now.

IDK your mechanical background but its not a very hard job. Patience like anything.
I'd say I know my way around cars. I can always ask the old man for help too. Maybe a fun weekend project and a few beers with him.
Old 08-21-2014, 06:16 PM
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You got this dude lol
Old 08-21-2014, 06:23 PM
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Originally Posted by senicalj4579
You got this dude lol
Haha thanks. I'm going to need them once I put the NT555rs on next Tuesday. Although I'm gonna miss leaving a huge patch whenever I punch it in first.
Old 08-21-2014, 06:34 PM
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IDK how a manuals trans mount is setup but when ever your motor mounts are shot it is a good chance the trans mount is shot also. You need to check that too. Check the torque arm bushing while your down there.
Old 08-21-2014, 06:37 PM
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Originally Posted by senicalj4579
IDK how a manuals trans mount is setup but when ever your motor mounts are shot it is a good chance the trans mount is shot also. You need to check that too. Check the torque arm bushing while your down there.
I replaced the transmission mount a few weeks ago. Made quite the difference but now I know the real culprit war the motor mount.

Last edited by scotty2000ss; 08-22-2014 at 11:41 AM.
Old 08-22-2014, 11:32 AM
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On my old car, I installed LT's at first with original motor and trans mount. After about a a week, the headers started to rub the K-member. I guess the mounts were compromised already due to age and the heat from my LT's really did them in. Went with prothane mounts after that and what a different. I swear the car felt like it actually had more torque since it wasn't wasting it throwing the motor and trans around.
Old 08-22-2014, 11:42 AM
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Originally Posted by LopeyZ
On my old car, I installed LT's at first with original motor and trans mount. After about a a week, the headers started to rub the K-member. I guess the mounts were compromised already due to age and the heat from my LT's really did them in. Went with prothane mounts after that and what a different. I swear the car felt like it actually had more torque since it wasn't wasting it throwing the motor and trans around.
Any tips on doing it yourself?
Old 08-22-2014, 11:21 PM
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Here are all the tips you need - and then some: https://ls1tech.com/forums/generatio...r-written.html
Old 08-23-2014, 06:07 AM
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Originally Posted by RevGTO
Here are all the tips you need - and then some: https://ls1tech.com/forums/generatio...r-written.html
Wow, great info thanks! Still looks like a pain in the sack lol


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