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Old 07-13-2019, 06:09 PM   #1
reemoe
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1995 SC1
Default Engine / Transmission Mounts

'95 SC1 - as of a year ago, no longer my daily driver. I'm handing it down to my 15-year-old daughter, just learning to drive.

I replaced the Upper Engine Mount about four years ago (with an OEM mount), due to vibration. It really eliminated the vibration.

I haven't driven it much in the past year. However, I was taking it in for its state inspection today, and some vibration was back. It is likely time to replace one or more of the other three mounts.

Would it make any sense to only replace the Lower Transmission Mount at this time? OEM looks to be only about $38. Whereas, the two other mounts (dog bone mounts) are a sky- high $156 each! The aftermarket dog bones are only about $10, but it appears they are all junk that don't last long.

Any advice would be appreciated!

Thanks in advance,
Ryan

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Old 07-14-2019, 01:41 PM   #2
SlayZombi
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2001 SL
Default Re: Engine / Transmission Mounts

Quote:
Originally Posted by reemoe View Post
'95 SC1 - as of a year ago, no longer my daily driver. I'm handing it down to my 15-year-old daughter, just learning to drive.

I replaced the Upper Engine Mount about four years ago (with an OEM mount), due to vibration. It really eliminated the vibration.

I haven't driven it much in the past year. However, I was taking it in for its state inspection today, and some vibration was back. It is likely time to replace one or more of the other three mounts.

Would it make any sense to only replace the Lower Transmission Mount at this time? OEM looks to be only about $38. Whereas, the two other mounts (dog bone mounts) are a sky- high $156 each! The aftermarket dog bones are only about $10, but it appears they are all junk that don't last long.

Any advice would be appreciated!

Thanks in advance,
Ryan
I've used SKP and those mounts seem to be solid. Also heard Westar is pretty god. If you elimination was pretty much eliminated and then 1 year later is was back then I suppose that the OEM ones didn't last very long either right? Just get the aftermarket ones. It's rubber made for catching vibrations. Either way, it wont be THAT much of a difference.

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Old 07-15-2019, 08:43 AM   #3
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Default Re: Engine / Transmission Mounts

If you're really concerned about the cost but want OEM you can try getting some OEM ones from the auto wreckers. The upper trans mount under the battery from a 2002 S Series (GEN3) would be what you're looking for. Life in the upper position is less harsh and as a result they last longer. The GEN3 mount also can accommodate replacing just the bushings with prothane bushings. The earlier design in your 95 is not compatible with the prothane replacements.

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Old 07-20-2019, 11:32 PM   #4
lilwhitetruck
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Default Re: Engine / Transmission Mounts

Trottida,
Can you recommend where to just get the inserts for the bushings? Thanks!

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Old 07-21-2019, 12:31 AM   #5
Keblar
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Default Re: Engine / Transmission Mounts

Quote:
Originally Posted by lilwhitetruck View Post
Trottida,
Can you recommend where to just get the inserts for the bushings? Thanks!
Part # is Prothane 7-510-BL for the black. You can order directly from Prothane, but there are multiple sources (Amazon, Ebay, etc.). Just do a search and determine what's best fro you with price + shipping and time to delivery.

Even with compatible "dogbones" though, getting the old ovals out is a HUGE pain. I start back at mine with a Dremel tomorrow.

...
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Old 07-21-2019, 10:02 AM   #6
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Default Re: Engine / Transmission Mounts

They come out pretty easy with a 6" bench vice, even if it's a cheap one. Most bushings do, I'm really missing having a table to even set mine on.

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Old 07-21-2019, 10:37 AM   #7
Keblar
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Default Re: Engine / Transmission Mounts

Quote:
Originally Posted by fetchitfido View Post
They come out pretty easy with a 6" bench vice, even if it's a cheap one. Most bushings do, I'm really missing having a table to even set mine on.
The small end came out ok, but the oval is either fused from rust or is such a tight pressure fit it may as well be welded. NUC mentioned a cold chisel, but I'm having a hard time even finding a seam to chisel out without destroying the frame of the strut. I don't think just removing the rubber material is enough clearance for the new one to push in.

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Old 07-21-2019, 11:21 AM   #8
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Default Re: Engine / Transmission Mounts

Are you sure you've got a replaceable style dog bone? Doesn't matter what gen/model it came out of...anything could have been put in. The small end comes out on both factory styles.

The shell for the old bushing has to come out, there's almost not enough room with it out for the prothane bushings to be put in.
Attached Images
File Type: jpg bad s-series mount.jpg (62.8 KB, 13 views)
File Type: jpg good s-series dog-bone.JPG (66.7 KB, 13 views)
File Type: jpg best s-series dog-bone.jpg (61.6 KB, 13 views)

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Old 07-21-2019, 01:08 PM   #9
Keblar
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Default Re: Engine / Transmission Mounts

Quote:
Originally Posted by fetchitfido View Post
Are you sure you've got a replaceable style dog bone? Doesn't matter what gen/model it came out of...anything could have been put in. The small end comes out on both factory styles.

The shell for the old bushing has to come out, there's almost not enough room with it out for the prothane bushings to be put in.
I do have the middle one. I'm assuming the rim of the bushing (highlighted some in red below) has to be pried out, that it won't just press. The bracket is pretty rusted and the only place i can find a decent seam is at the Y area circled in green. I went at it with a HD flathead and a hammer yesterday without much progress. I'm thinking of cutting all the rubber away with a utility knife and/or hole saw, then using a dremel to cut that rim at the Y and hopefully pull/pry inward.

Right now I'm working on the assumption that the entire metal oval (partial red highlight) needs to be removed. IS that wrong? Is that oval rim structural?

If successful I was going to clean up any loose rust and coat the whole bracket with fluid film to inhibit. I'd repaint, but I'm too afraid I'd leave some behind and trap underneath.

Sorry if this is a Hijack reemoe. Hopefully this will be useful for you too.
Attached Images
File Type: jpg good s-series dog-bone highlight.jpg (107.7 KB, 10 views)

...
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Old 07-21-2019, 01:17 PM   #10
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Default Re: Engine / Transmission Mounts

I think they only come out in one direction, not both.

Guide: http://www.saturnfans.com/forums/sho...d.php?t=118587

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Old 07-21-2019, 02:58 PM   #11
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Default Re: Engine / Transmission Mounts

Quote:
Originally Posted by fetchitfido View Post
I think they only come out in one direction, not both.

Guide: http://www.saturnfans.com/forums/sho...d.php?t=118587
Thanks. I'd missed that tutorial. I'll try working on the flat seam some more before breaking out the dremel now that I know more what I'm working toward.

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Old 07-21-2019, 11:44 PM   #12
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Default Re: Engine / Transmission Mounts

Quote:
Originally Posted by Keblar View Post
Thanks. I'd missed that tutorial. I'll try working on the flat seam some more before breaking out the dremel now that I know more what I'm working toward.
Sooo, yeah, I was working on the wrong side.

Once I cleaned up some more rust, I could see that side was much softer metal and didn't have as much of a lip. The 4 tabs weren't exactly obvious with all the corrosion but I was able to use a small screwdriver and hammer to pry away the whole perimeter pretty easily, which was enough to pound it out the other side.

The bracket cleaned up pretty well.

Pressing the big bushing in was awkward, but I managed to use a floor jack to sandwich it in between 2 pieces of wood pressing against a flat part of the under frame (on ramps for better access).

Trans mount was a pain too since I have an automatic, but loosening the 2 top mount bracket bolts was the key for me.

...
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Old 07-23-2019, 02:25 AM   #13
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Default Re: Engine / Transmission Mounts

Thanks Keblar and everyone who contributed to how to replace them!

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Old 08-20-2019, 12:34 PM   #14
Keblar
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Default Re: Engine / Transmission Mounts

Not the OP, but I thought I'd give a follow up from my recent mount experience:

My replacement combo was OEM for the trans mount, prothane inserts for both dogbone / torque mounts, and Westar EM-2827 for the top. I'm pretty pleased so far.

Everything is much quieter with considerably reduced vibration. I'm not getting any excessive vibration transfer from the prothane inserts even though I do have some slight engine vibration (YMMV though). What I am getting is noticably smoother, and maybe even slightly quicker, shifts.

So far the Westar top mount is working out well too. I decided to go with the cheaper Westar mount instead of OEM even though some have reported rapid wear and low mileage failure from them. I'll try to do a long term follow up, but if it doesn't last, it will be the easiest to replace so I'm not terribly concerned right now.

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