Torque specs for STB
Thread Starter
Senior Member
Expert Gearhead
Joined: Dec 2002
Posts: 20,893
Likes: 1
From: Mississauga, Ontario

Fellers, my strut tower brace has arrived fresh from GM. I plan on installing it tonight. What are the torque specs for the bolts once the bar is on?
Tell me if I'm missing anything
1. P-brake on
2. Loosen the 2 bolts on either tower, remove small metal plate
3. Drop bar down (do I need the metail plate?)
4. Torque bolts down (how much?)
5. Insure clearance between brake fluid container and bar
6. Insure clearance between bar and hood
Did I miss anything? :?
Tell me if I'm missing anything
1. P-brake on
2. Loosen the 2 bolts on either tower, remove small metal plate
3. Drop bar down (do I need the metail plate?)
4. Torque bolts down (how much?)
5. Insure clearance between brake fluid container and bar
6. Insure clearance between bar and hood
Did I miss anything? :?
Senior Member
True Car Nut
Joined: Dec 2002
Posts: 5,857
Likes: 0
From: Halifax, Canada 91SSE / 97SSEi

You forgot the beer....
A) No you don't need the small metal plate.
B) I believe the correct torque is 35lbs (gurus correct me if I'm wrong)
And that should be it
I love my STB.... best $60 I spent on the car for under the hood. :P
A) No you don't need the small metal plate.
B) I believe the correct torque is 35lbs (gurus correct me if I'm wrong)
And that should be it
I love my STB.... best $60 I spent on the car for under the hood. :P
Thread Starter
Senior Member
Expert Gearhead
Joined: Dec 2002
Posts: 20,893
Likes: 1
From: Mississauga, Ontario

Thanks Merlin
I had a brain fart tho they(the dealer) and I forgot to include the connectors. So I have a bar and no connector mounts...nice another few days to wait now
I had a brain fart tho they(the dealer) and I forgot to include the connectors. So I have a bar and no connector mounts...nice another few days to wait now
Thread Starter
Senior Member
Expert Gearhead
Joined: Dec 2002
Posts: 20,893
Likes: 1
From: Mississauga, Ontario

Yup..I was a bit worried off the bat when I grabed the bar off of the parts counter. I looked at the thing and kinda shook my head. :? No tower/connector mounts, no bolts, just a bar. So I walked around the dealership to see if they had a used 92-99 Bonne around. No such luck, I wanted to have a look under the hood and see what they had. Did I order the wrong part? Is the bar not going to fit etc?
So I went back and said "Something is amiss here", so he showed me the diagram on the computer, I mentioned the tower mounts.....OH YA...
those things, $26 each...ok...just get em in, and of course, they have to come in from Michigan. Knowing how far Michigan is from Mississauga (Toronto) of course it'll take 5 business days...
idiots....
Oh...why the $&^% does GM charge $11 for hardware (nuts and bolts), I got the sizes off the parts guy (M8 x 45 bolt, 2 M8 nuts and 2 washers) all metric bear in mind....and spent $1.57 at Home Depot
So I went back and said "Something is amiss here", so he showed me the diagram on the computer, I mentioned the tower mounts.....OH YA...
those things, $26 each...ok...just get em in, and of course, they have to come in from Michigan. Knowing how far Michigan is from Mississauga (Toronto) of course it'll take 5 business days... Oh...why the $&^% does GM charge $11 for hardware (nuts and bolts), I got the sizes off the parts guy (M8 x 45 bolt, 2 M8 nuts and 2 washers) all metric bear in mind....and spent $1.57 at Home Depot
Thread Starter
Senior Member
Expert Gearhead
Joined: Dec 2002
Posts: 20,893
Likes: 1
From: Mississauga, Ontario

OK...good times, I picked up the tower mounts on Friday with Smellbird, I assembled the bar yesterday. Torqued down the bolts and it looks really good. Tonight it goes on. I'm excited, its nice how easily it bolts up.
Just an update....lol
Just an update....lol
Thread Starter
Senior Member
Expert Gearhead
Joined: Dec 2002
Posts: 20,893
Likes: 1
From: Mississauga, Ontario

Best money I have spent on my car in a long long time. Twisty roads lick their wounds after I drive over them. What a difference. The machining of the tower mount was a bit off, so I had to hammer down one end of the mount. Otherwise no sweat at all. Bolts right up. Those self locking nuts that the tower mounts are bolted down to come off mighthy easily.
The steering has gotten way nicer too, much less rigid then it used to be, which I found odd.
Anyone with a 87-91 Bonneville....get an STB, the lighter weight of the car and stiffer suspension makes a huge difference
umm dude, you din't need to hammer the STB down....
i just removed the inner bar/connector bolt, lined it up, and rotated it into place, then reinstalled the bolt...
"work smarter, not harder" it must have been pretty dificult to whack that thing on...
BTW what'* the torque for those bar/connector bolts?
i just removed the inner bar/connector bolt, lined it up, and rotated it into place, then reinstalled the bolt...
"work smarter, not harder" it must have been pretty dificult to whack that thing on...
BTW what'* the torque for those bar/connector bolts?
Thread Starter
Senior Member
Expert Gearhead
Joined: Dec 2002
Posts: 20,893
Likes: 1
From: Mississauga, Ontario

I didn't hammer the tower mount into place...lol the mount has machined incorrectly the bolt holes didn't line up correctly. I took the bar off the car, grabbed a rag and a mallet and just tapped away at the side of the mount. Then I laid the bar back on and torqued down the bolts.


