** The best poly motor mount write up ever written **
Anyone have a vibration issue after installing poly motor mounts? I just ordered some.... Also, is it a bad idea to run stock trans mount with poly motor mounts? I have a poly motor mount and I am debating on going back to stock on account of the horrible vibration it has caused.
Thanks!
Thanks!
Holy crap, stay away from poly trans mounts! I put one on my car when I changed my clutch and it made it so rough! Seriously, I was so glad to finally put the stock mount back in. You could watch coins vibrate accross the carpet while driving on the interstate with the poly trans mount. They amplify every vibration that your drivetrain has in it.
That being said, who wants to buy mine?
There are plenty of 9 second cars running stock trans mounts.
Poly engine mounts, on the other hand, are worth their weight in gold!
That being said, who wants to buy mine?
There are plenty of 9 second cars running stock trans mounts.
Poly engine mounts, on the other hand, are worth their weight in gold!
Last edited by KurtRardin; Mar 26, 2010 at 08:33 PM.
i LUV my polys.....the engine does not rock anymore from that nasty dried up stock rubber....can hardly tell ANY vibration....and i have poly tranny mount too....if i did not already have mine i would buy yours 
Last edited by sjsingle1; May 26, 2011 at 05:02 PM.
Launching!
Joined: Sep 2004
Posts: 295
Likes: 0
From: Las Vegas, NV
I've been rocking poly trans mount for over 6yrs and have no harsh vibrations, most of my vibration comes from the exhaust hitting on the floor pan. I'm ordering poly engine mounts on the 1st.
Now, in my Volkswagen i put poly engine mounts in and yeah it vibrated but nothing major.
Now, in my Volkswagen i put poly engine mounts in and yeah it vibrated but nothing major.
If you've got a wheel that's slightly out of balance, or a driveshaft that isn't perfect, or anything else that isn't perfect then you'll feel it more with a poly trans mount.
Since you've already got a poly trans mount, and your about to go with poly engine mounts, if you experience some harsh interstate vibrations then I'd invest in a regular trans mount. The stock engine mounts might be obsorbing a lot of vibrations that you can't feel yet. Maybe not though. Just don't cuss your new poly engine mounts right away because they'll serve a bigger purpose than the stiffer trans mount.
On a side note: I put a poly torque arm mount in when I did my clutch and poly trans mount and I can't say for sure that it did anything!
Since you've already got a poly trans mount, and your about to go with poly engine mounts, if you experience some harsh interstate vibrations then I'd invest in a regular trans mount. The stock engine mounts might be obsorbing a lot of vibrations that you can't feel yet. Maybe not though. Just don't cuss your new poly engine mounts right away because they'll serve a bigger purpose than the stiffer trans mount.
On a side note: I put a poly torque arm mount in when I did my clutch and poly trans mount and I can't say for sure that it did anything!
Staging Lane
Joined: Aug 2009
Posts: 54
Likes: 0
From: New Hampshire
Another suggestion, pull out a carpenters level before you start unbolting stuff and make sure your car is sitting nice and level.
When I did mine on the 94 t/a I did one side at a time, starting with the driver's side. For the life of me I could not get the driver's side to get back in, so I got pissed and gave up for the day. My dad suggested checking the levelness of the car. Sure enough I checked the levelness, fixed the jack stands, and it fell right into place.
I also used a jack underneath the engine to pivot it up and down until I could get the bolt to just slide right in. Just had one person bringing it up and down for me by marginal amounts.
Driver's side took me 7 hours, passenger's side took maybe 2. This was with the manifolds already pulled, getting ready for LT's.
I'm going to be tackling this soon in the Camaro along with headers, I'm not sure if there is much of a difference between the LS1 and LT1 as far as this goes, but I feel like it is going to be so much easier the second time around.
When I did mine on the 94 t/a I did one side at a time, starting with the driver's side. For the life of me I could not get the driver's side to get back in, so I got pissed and gave up for the day. My dad suggested checking the levelness of the car. Sure enough I checked the levelness, fixed the jack stands, and it fell right into place.
I also used a jack underneath the engine to pivot it up and down until I could get the bolt to just slide right in. Just had one person bringing it up and down for me by marginal amounts.
Driver's side took me 7 hours, passenger's side took maybe 2. This was with the manifolds already pulled, getting ready for LT's.
I'm going to be tackling this soon in the Camaro along with headers, I'm not sure if there is much of a difference between the LS1 and LT1 as far as this goes, but I feel like it is going to be so much easier the second time around.
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TECH Apprentice
Joined: May 2004
Posts: 318
Likes: 14
From: Chicago, IL
mount to block 37 lb ft
through bolt 70 lb ft
pedastal bolts 43lb ft
If you just loosen the through bolt and take out the mount to block and pedastal to k-member bolts it comes out as one piece. That way you don't have to do anything with the a/c compressor or alternator.
through bolt 70 lb ft
pedastal bolts 43lb ft
If you just loosen the through bolt and take out the mount to block and pedastal to k-member bolts it comes out as one piece. That way you don't have to do anything with the a/c compressor or alternator.
Got a question could be a dumb one but can you just do the drivers side mount??? Thats the torque side. Firgured you can just do that and it will help. let me know cause i'm not looking forward to doing this at all!!!!!!!!!!! i'm so tired of watching my motor rock with the cam and the loud banging of my y pipe againts the floor. Is there anything that could be damaged because of bad motor mounts? its not losing power to the wheels with this is it?? thanks guys
Your logic sounds right about the torque side but if its one thing I have learned the hard ....and I mean hard way about these cars is that it does not pay off in any way to just get by or half *** it. It WILL come back to haunt you. If any case, take it into consideration that there are some guys on here that did both sides and still get a bump from the ypipe. It sucks man but its the truth, just bear down and make it happen....hell if I did, u can.
Your logic sounds right about the torque side but if its one thing I have learned the hard ....and I mean hard way about these cars is that it does not pay off in any way to just get by or half *** it. It WILL come back to haunt you. If any case, take it into consideration that there are some guys on here that did both sides and still get a bump from the ypipe. It sucks man but its the truth, just bear down and make it happen....hell if I did, u can.
Your logic sounds right about the torque side but if its one thing I have learned the hard ....and I mean hard way about these cars is that it does not pay off in any way to just get by or half *** it. It WILL come back to haunt you. If any case, take it into consideration that there are some guys on here thqyat did both sides and still get a bump from the ypipe. It sucks man but its the truth, just bear down and make it happen....hell if I did, u can.
I did a poly mount swap once in a 99 Cavalier Z24 and it was the worst thing I ever did. Although in those cars, one side doubles as a trans mount. It was terrible. Anything loose in the car jumped around like an earthquake was going on every time I stepped on the gas.
Different car, different structure and setup, different results I'm hoping.
Going from a set of "don't notice anything wrong" rubber mounts with (I'd guess) 120k on the clock... to poly mounts...
and then swapping the same age transmission mount with a 1LE stock mount....
would this be a good setup for someone that can handle a little vibration but doesn't want everything in his center console rattling around t-rex style every time he presses on the gas??
Different car, different structure and setup, different results I'm hoping.
Going from a set of "don't notice anything wrong" rubber mounts with (I'd guess) 120k on the clock... to poly mounts...
and then swapping the same age transmission mount with a 1LE stock mount....
would this be a good setup for someone that can handle a little vibration but doesn't want everything in his center console rattling around t-rex style every time he presses on the gas??