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9000 upper motor mount..Walk through with PICS

3.9K views 30 replies 12 participants last post by  Palmer  
#1 ·
I don't have many Pics right now, and this is only version 1, there will be more revisions. And since no one has really made a good walkthrough so here is my attempt.....With that Said heres one way to make this upper motor mount work.

First, since our head has the same bolt holes as the 9000's it is relatively easy to mount the engine part of the mount. However some cutting of the mount is needed so that it can clear our serpintine belt tensioner. (its a bit different setup on the 9k, so all four bolts are used, on the 900/9-3 only the upper 2 holes are used.

This is the mount how it is Stock
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What needs to be cut off...
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Another shot
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The aluminum is pretty soft, I used a Sawzall And some wd40 shot on the blade every so often to help it along. Just put the mount in a vice and go to town, a fairly long blade on the sawzall usually makes things easier.

I left the part going down between the holes, just to add strenght to the mount, its not too crucial as this is a secondary mount however it doesnt get in the way of anything so it can stay.

Once this is done you can bolt this on to the head. I bought Stainless stell M8 1.00 thread pitch 50mm long, they probabaly could be a bit longer but these seem to work great, I also through some lock washers on there for good measure.

You also now have to decide how you want to mount the mount to the car, there are a few different ways, one being to drill a hole in the strut tower brace, that requires shortening the mount, some have welded a sleeve to the strut tower brace, and Ricot83 made a crazy SS bracket off the strut tower, but he had access to a plasma cutter and the steal. I choose my method for now as a quick way to see if this made a differnce. I am not saying its the best, and I am sure there are otherways but heres my experience so far.

Revision one
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This was with the stock buhsings in the mount..they were pretty beat up, lots of RIps. Also I am sorry I dont have pics of fabricating the U mount. Honetly this part was pretty simple, however I used some pretty thick flat stock for the U bracket, and I had to use my friends Oxy/Acetylyne torch to heat up the metal enought so it would bend easy.

A hole around 10 mm was drilled in the flat stock to mount the bushing and then a small hole was drilled in the back of the U bracket to mount to a small stud that was tack welded to the quasi firewall in that area.(It is the piece that branched off the firewall and under that plastic shoruding between this and the firewall is the climate control stuff/climate air filter...might as well change it if your in there)

Now a Word about this small stud sticking from the firewall, SPATL to my knowlege was the first to notice this stud and use it, knowing it would most likely rip out, as it was only tack welded to the steal. Sure enough his did rip out, however I decided to use it for the time being to see/feel any difference. Well the first test drive I definetly noticed a difference, but shift still felt sloppy so I realigned the shifter (I have a MP short shifter) and things got better.

2 days later I popped the hood after I heard a poping sound (when going in reverse up a hill...makes sense as it put some stress on the stud), and sure enough the stud had ripped through. At this point I decided to buy the Poly bushings from Eeuoparts...30 bucks each and since they are right across the state from me they came the next day..free shipping too :D

I managed to almost hammer one old bushing out but it was a bitch, I wound up going back to my old highschool cause I was pretty friendly with the shop teacher and he let me use the Hydrualic press. (any machine shop or well equipped mechanic can do this for you, for very little $$ or maybe even free if your nice...another suggestion is fill the stock bushings with plumbers goop)

My next revision was to utilize the now aproximately 10 mm hole in the "firewall". I cut a piece of flat stock about 4 inches long and drilled a 10mm hole in the center of it (this is to distribute the load over a large aread to reduce any stress). I then stuck the bolt through this and then throught the "firewall" and bolted everything back up.

Well HOLY CRAP, it made a buch bigger diffrerence, for a while it made a bit of a squeaking sound, but I think that was just the burss left from the tackweld rubbing agaist the flat stock. Because of the stiffness of the poly there is some more engein noise transmitted into the cabing (almost as if you can hear the valve train werr) but its not very loud and easily concealed with music, or maybe some sound deading added behind the glove box.

Revision 2
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Crappy photo of bolt throug the "firewall"
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That is my mount so far, however I had many Ideas before deciding to throw this one together. My other Idea was to traingulate the mount, and put another hole in the firewall, (this would be similar to the stock 9k bracket but much longer, as seen here)
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This is because My fear right now is that it is to some extent acting like a hinge, and could be mooving side to side under load...I shall see on the DYNO and hopefully post a video!!

However I dont have the time right now, and also my best friend with the welder is still at school for his last term, when he comes back in late december he is going to teach me how to weld and I am going to fabricate a new mount to my liking, for now however to remedy this problem, I will most likely take a piece of flat stock and go from the strut tower to the mount to form a "L" bracket and keep it from mooving side to side.

The results. After the Poly's I actually found the shifting to be worse :shock: , the reason I concluded was that the engine was now rotating back unevenly, as now it would rotate back on the drivers side, but stay stationsary on the passengers, still throwing off the linkage, however I did not fear because I orderd Genuine Saabs Poly mount, a month and a half ago, and with a big ordeal with backorderd (not there fault but kinda sucky lol) and then freekin UPS..see here

Well finally yesterday I got a chance to intstall it, it make a big differnce, shifting is great now, However I think the saab savior short throw shifter could make it better then the MP one, it grinds sometimes now, but I think that is just because I am not used to it working "correctly" lol Plus once the new clutch goes in the tranny is getting fresh MTL whatever it is saabs number is haha.

the tranny mount pic is in the "See Here" Link

I hope this is helpful, questions coments....post away :D
 
#10 ·
well after seing it on the DYNO, it definetly makes a difference...howeer, I need to come up with something better, the false firewall that it is mounted to flexes signifigantly when the engine is screaming in 3rd gear, time for me to toss some more ideas around.

I'll Keep this thread updated as well.

If anyone has any idea, feel free to post em up here.
 
#12 ·
I rechecked my mount this weekend and found that the false firwall is still very solid. The mount was solid as well so the popping I hear must be a strut cartridge going bad. I think the mount location is strong enough to hold it..
There is nothing in the way with adding a second brace back to the true firewall but if you take the cowl off, you'll see that the mount location is pretty strong.
 
#13 ·
its fairly strong but mine definitely flexes (I saw it at the Dyno, move back at least 1/2 an inch) Maybe its because I have the Poly Bushings and they are so much stiffer then the shot rubber ones. Also I get some squeaking from behind the glove box area.
 
#14 ·
I believe you. I have never seen the mount on the dyno but I would believe that the engine could make it flex.

The look this weekend for me was mostly to ensure that the mount wasn't causing the pop I have been hearing. Which it isn't. So that leads me to believe that I have a strut cartridge going bad. The mount was well secured.

Probably with the poly in there the false firewall would take more of the brunt of the engine so it makes sense. My mount is in dire need of new bushings as the ones in there are shot so I probably don't have the effect you do currently.
 
#15 ·
yeah thats what I Figured.

I also have the genuine saab tranny mount. I wonder withit being so stiff at both ends that the motor is not rotating evenly so the shift linkage is still a bit off...there is an improvement but not too much...I think I am going to try temporarily removing the upper mount and seing how the shifts feel then.

Next would be to get the saab savior, to replace the mp shifter.

I'll see eventually, best would be if we could convert to a cable linkage, but that would probabaly be cost prohibitive
 
#16 ·
I am planning on doing this soon. I have all the parts however, the mention of poor (er) shifting makes me nervous. I am planning to use the strut tower brace, and have a poly bushing on the way.

Did the issues mentioned above ever get rectified?

Could it be the short shifter?
 
#17 ·
WyldSaabMan said:
well after seing it on the DYNO, it definetly makes a difference...howeer, I need to come up with something better, the false firewall that it is mounted to flexes signifigantly when the engine is screaming in 3rd gear, time for me to toss some more ideas around.

I'll Keep this thread updated as well.

If anyone has any idea, feel free to post em up here.
In the 9k the one end of the mount doesn't attach to the false firewall, its bolted to the inside of the strut tower/fender. A more rigid mounting point would probably help. Maybe you can get that end of the 9k mount and use that?
 
#19 ·
I think it's more of a high-power improvement. When you are pulling hard, and you go to shift into third, is there sort of a "thunk" sound and feel? With the 9000 mount that should improve as the shift linkage should stay much more in-line.

I am in the process of fabricating a mount to replace the second half of the 9000 mount. HOPEFULLY have it made by the end of the month... time is kinda hard to come by these days. We can compare notes when we're done.
 
#20 ·
Good deal!

Yeah, third is kinda "crunchy". I usually just shift it slow, but that gets boring.

Here is where I'm at:

The bushing was shot, so I filled it up with semi-flexible epoxy.
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I had to polish this up too.
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For the part that is going to be welded to the strut tower brace, we are going to use a 4mm thick stainless steel plate that is about 5" long and 2.5" wide. It used to be a ski scraper.
 
#23 ·
Nice polishing job! I'd love to use the "back half" of the motor mount, but so far I haven't been able to figure a way to use it effectively. It's awful tight back there near the strut tower...
 
#25 ·
hey, would it be possible to maybe tap into the frame of the car where the passenger side strut tower comes up. Maybe drill two large holes and use some kind of bracket to connect to the motor mount. Only problem is maybe since its coming at the mount at a 90 degree angle the force from the engine wouldn't be distributed well?
 
#26 ·
Ok, So here is another take on the 9-3 upper mount.

The "pile" consists of a 9k mount setup and a poly bushing.
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Shortened mount
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Cutting the 4mm stainless plate that started life as a ski scraper. Don't ever use one on your skis. Ever.
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Removing paint from the stut tower brace
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This is the part that goes on the actual stru tower on a 9k. We cut it to fit over the mount.
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Like this:
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Here you can see the part that attaches to the block. The bushing was shot, so I taped it off, and filled it with 2ton epoxy. It's kinda stiff.
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Stainless plate
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Welded to the STB
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