SaturnFans.com
saturnfans.com - classifieds - forums - webmail


Go Back   SaturnFans.com Forums > Models > Saturn S-Series > S-Series Tech

Reply
 
Thread Tools Display Modes
Old 12-07-2006, 10:57 PM   #1
reelon
Member
reelon is on a distinguished road
 
Join Date: Oct 2006
Posts: 99
Default Motor mount question

I replaced the top motor mount, but I wonder....if the top motor mount was bad...would it not make sense that the lower mount or the transmission mount did the extra work of the broken top motor mount? Is there a way to check them? Thanks for all your help! 97, sl1 mt.
reelon is offline   Reply With Quote
SaturnFans.com Sponsored Links
Old 12-08-2006, 01:37 AM   #2
jdcart
Member
jdcart is on a distinguished road
 
Join Date: Sep 2005
Posts: 180
Default Re: Motor mount question

The best indication of a worn motor mount, best case scenerio, is excessive vibration . . .worse case scenerio, an engine that feels like it is jumping out of the car. If replacing the top one did not quell the problem, replace the others. I would recommend factory parts unless you are on a strict budget.
jdcart is offline   Reply With Quote
Old 12-08-2006, 02:56 AM   #3
xupthree60
Master Member
xupthree60 is on a distinguished road
 
xupthree60's Avatar
 
Join Date: Mar 2006
Location: Indianapolis, IN
Posts: 3,007
 

2002 L-Series 2.2L Sedan
Default Re: Motor mount question

its very rare for a lower trans mount to go bad. i only replaced mine cuz i accedently gave it to the junkyard with my used tranny lol
...
3x CFR SCCA autocross champion with a 95 SL2 & 98 SC2

Currently own a 02 L200 with no plans to mod.
xupthree60 is offline   Reply With Quote
Old 12-08-2006, 12:51 PM   #4
eljefino
Master Member
eljefino will become famous soon enough
 
eljefino's Avatar
 
Join Date: Mar 2003
Location: Standish Maine
Posts: 5,788
 

1995 SW1
2000 SL1
Default Re: Motor mount question

I like to think of the motor mount system as restricting engine movement across various geometric vectors. The top mount supports a lot of engine weight and also mildly keeps the engine from going up and down as it twists itself against the drive axles. But it deals also with the shock waves of the engine bouncing as the whole car bounces over bumps etc.

The under-transmission mount does similar work on the drivers side, but due to simpler design and lighter weight on it, deforms less.

The two dogbone mounts deal with the day-to-day rotational torque of the not-so-amazing economy engine installed in these cars, and don't actually support the engine very much. If these go out you'll notice a more "rubbery" feeling taking off as the engine twists itself instead of putting power down to the pavement. A side observer would see the engine twist a lot if your hood were open when you took off.

Really it's an issue of design, and that the top axis mount was under-designed. Also designed in a hurry, as the 91s didn't have them and they were tacked on for the rest of the model run in response to customer feedback. If you look at the passenger side fenderwell you see its mounting bracket is just bolted on... something they'd have welded in, most likely, if they planned it from the beginning.
eljefino is offline   Reply With Quote
Old 12-08-2006, 02:12 PM   #5
richharr
Junior Member
richharr is on a distinguished road
 
Join Date: Nov 2006
Location: queens, N.Y.
Posts: 38
 

1995 SL1
Default Re: Motor mount question

I have a similar problem. when my engine warms up, at idle standing still the car vibrates a lot, until you give it gas. does anyone have any suggestions about which mount to replace and which company to use? my 95 sl1 5spd is shaking like a crackhead....
...
Semper Fi
University of Science, Music, and Culture.
richharr is offline   Reply With Quote
Old 12-08-2006, 02:59 PM   #6
Luke
Master Member
Luke will become famous soon enough
 
Luke's Avatar
 
Join Date: May 2002
Location: Laguna Bch, CA
Posts: 4,159

1995 SL2
Default Re: Motor mount question

Quote:
> Reelon <
would it not make sense that the lower mount, or the transmission mount, did the extra work of the broken top motor mount? .......97SL1
With the age of the car, I'd strongly suggest that the lower transmission mount should be changed
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired
Luke is offline   Reply With Quote
Old 12-08-2006, 03:16 PM   #7
3.8TransAM
Member
3.8TransAM is on a distinguished road
 
Join Date: Jun 2006
Location: Schererville, IN
Posts: 88

1992 SL1
Default Re: Motor mount question

Grab a prybar and test them out.

Just pry up or over on them as necessary.

I replaced all of mine at once since they were thrashed. Trans mount was seperated, TAM was split clean thru and dogbones were all mush deformed severely.

good write ups in the library by myself and others for replacing them yourself

later
Jeremy
...
The car that is to dumb to die: 92 SL1

Fill the oil check the gas

Favorite quote while merging with traffic in the SL1 "I'm gonna die!"
3.8TransAM is offline   Reply With Quote
Old 12-08-2006, 05:05 PM   #8
Luke
Master Member
Luke will become famous soon enough
 
Luke's Avatar
 
Join Date: May 2002
Location: Laguna Bch, CA
Posts: 4,159

1995 SL2
Default Re: Motor mount question

Quote:
> Jeremy <
TAM was split clean thru
And, of course, you're referring to the Upper Engine Mount, one of four of the componenst of the TAM System.

TAMS: > Reference in the "How-To" Library > >Here<.

In the "How to" Library, you'll also find the following:

A full clarification regarding the Torque Axis Mount System (TAMS) >Here<

Additional TAM information: >Here<
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired
Luke is offline   Reply With Quote
Old 12-08-2006, 06:15 PM   #9
turbobuick33
Advanced Member
turbobuick33 is on a distinguished road
 
turbobuick33's Avatar
 
Join Date: Jul 2005
Location: IL
Posts: 996
 

1992 SL2
Default Re: Motor mount question

I have a question about removing the preload after installing the mounts..I first installed the top mount, then a month later I replaced the 2 dog mounts..I did tighten the bolts to 37 ft lbs. Would I still have to loosen the dog mount bolts and retorque them to remove the preload even though I didn't touch the top mount?
...
92 SL2, 5 speed

91 Lx 5.0
turbobuick33 is offline   Reply With Quote
Old 12-09-2006, 09:28 AM   #10
reelon
Member
reelon is on a distinguished road
 
Join Date: Oct 2006
Posts: 99
Default Re: Motor mount question

Quote:
Originally Posted by Luke View Post
With the age of the car, I'd strongly suggest that the lower transmission mount should be changed
Would this be an OE replacement part?
reelon is offline   Reply With Quote
Old 12-09-2006, 01:56 PM   #11
Luke
Master Member
Luke will become famous soon enough
 
Luke's Avatar
 
Join Date: May 2002
Location: Laguna Bch, CA
Posts: 4,159

1995 SL2
Default Re: Lower Transmission Mount > OEM

Absolutely
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired
Luke is offline   Reply With Quote
Old 12-09-2006, 02:09 PM   #12
between5and7
Member
between5and7 is on a distinguished road
 
between5and7's Avatar
 
Join Date: Sep 2004
Location: Upland, California
Posts: 342
 

1993 SW1
1995 SL2
Thumbs Up Re: Motor mount question

I just replaced my torque axes mount and the mount under the transaxle. Also the bracket for the dog bone on the drivers side was broken due to one of the bolts some how comming out. After replacing these parts the car runs alot smoother. Of corse I did a lot more than just the motor mounts but this thread is about the motor mounts.
The torque axes mount was the easyest of all to do, but all in all, all were easy to do.
Good luck.
between5and7 is offline   Reply With Quote
Old 12-10-2006, 01:08 PM   #13
Luke
Master Member
Luke will become famous soon enough
 
Luke's Avatar
 
Join Date: May 2002
Location: Laguna Bch, CA
Posts: 4,159

1995 SL2
Default Torque Axis Mount SYSTEM: Has FOUR components

Quote:
> Btwn 5 & 7 <
I just replaced my torque axes mount
That would be your "Upper Engine Munt".
Quote:
and the mount under the transaxle.
That would be your "Lower Transmission Mount".
Quote:
Also the bracket for the dog bone on the drivers side
That would be your "Engine Strut".

TAMS: > It's a system, not a component. Check out the Reference in the "How-To" Library > >Here<.

In the "How to" Library, you'll also find the following:

A full clarification regarding the Torque Axis Mount System (TAMS) >Here<

Additional TAM information: >Here<

Upper Engine Mount Measuring for "failing"; 1st Generation design.
>Here<.
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired

Last edited by Luke; 12-10-2006 at 01:21 PM.
Luke is offline   Reply With Quote
Old 12-10-2006, 01:42 PM   #14
Luke
Master Member
Luke will become famous soon enough
 
Luke's Avatar
 
Join Date: May 2002
Location: Laguna Bch, CA
Posts: 4,159

1995 SL2
Default Engine Strut left supporting "bracket", preload

Quote:
> Turbo Buick 33 <
I have a question about removing the preload after installing the mounts.

Would I still have to loosen the dog mount bolts and retorque them to remove the preload
even though I didn't touch the top mount?
Yes, for if any of the four components are replaced, preload removal should be affected.

As you look at the "lower engine strut", you'll notice that the left of the strut is bolted within a 'bracket'.
It is the two nuts/bolts, which secure that very bracket, from underneath the frame on which it sits, which have to be simply loosened and then retorqued.

The two independent bolts which secure the actual strut, left and right side of the strut, are not the ones to which the above refers.
...
> 95 SL 2 = 653,369 Miles 40.4 MPG, as of 5/20/11. My manual Radiator Fan Switch, courtesy of Wolfman's patient installation guidance, continues to be.......invaluable < The car was retired
Luke is offline   Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Motor mount question rreuben S-Series Tech 5 11-19-2006 04:16 PM
Upper Motor mount question OU812 S-Series General 5 04-07-2006 09:44 AM
yes a motor mount question 71_307 S-Series General 4 07-07-2005 07:44 PM
Motor Mount Question SweetSL2 S-Series Tech 4 01-10-2005 10:08 PM
Motor Mount Question Aldiaz2331 S-Series Tech 2 12-13-2003 12:36 PM


All times are GMT -4. The time now is 08:07 PM.

Advanced Forum Search | Advanced Photo Search


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
SaturnFans.com. The Saturn Enthusiasts Site.