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Broken motor mount

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Old Mar 19, 2011 | 07:06 PM
  #1  
TNT_Z28's Avatar
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From: Minnesnowta
Car: 1987 Camaro Z28
Engine: 355ci, XE262 , 650dp
Transmission: T-5, RAM clutch
Axle/Gears: 3.23 limited slip
Broken motor mount

Last august, the drivers side motor mount (not the shell) loosened up and whenever i put the engine under heavy load, the engine and transmission would lift up.

About a week later i started trade school where im in class 40 hrs a week,on top of my part time job where i work 20 - 30 hrs a week. ive really had no time to mess with it, but warmer weather is FINALLY coming to the twin cities, and im itchin to drive my car.

I started wrenching on it a little bit back in august and found out that the back of the motor mount bolts are inconvenietly located behind the lower A-arms. Im no suspension expert, and i dont really have the time, specialty tools, or knowledge to take the suspension apart to gain access to those nuts.

My questions is this: What if i drilled and taped two holes in the subframe to anchor a chain over the engine, tightened with a turnbuckle.

-Has this been done or am i way off the map?
-Advantages/disadvantages?

Thanks,any input would be appreciated
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Old Mar 20, 2011 | 10:05 AM
  #2  
TNT_Z28's Avatar
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Joined: Apr 2008
Posts: 360
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From: Minnesnowta
Car: 1987 Camaro Z28
Engine: 355ci, XE262 , 650dp
Transmission: T-5, RAM clutch
Axle/Gears: 3.23 limited slip
Re: Broken motor mount

HEy, or what about welding the nuts to the sub-frame so i can just wrench them off from the top. cause the chain thing seems pretty stupid.

Also, ive heard of people drilling slots in the a-arms for wrenchs. Is that worth looking into?

and i dont want it to seem like im lazy or trying to put in half effort. I just literally have NO time. this would only be a temporary fix. if i go as far as removing the a-arms etc. there going to get replaced with tubular ones and ill probably get some better springs while im at it.

Last edited by TNT_Z28; Mar 20, 2011 at 11:01 AM.
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Old Mar 21, 2011 | 02:42 AM
  #3  
ASE doc's Avatar
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Joined: Apr 2010
Posts: 4,337
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From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: Broken motor mount

With the right tools you can do the mounts without drilling or cutting or otherwise bastardizing your 3rd gen. I've done a few with the suspension together. Each time I swore I wouldn't do it that way again but can't always get the customer to swing for an A arm pull and I wont cut up a car to make my job easier. The tools I refer to are Snap On 15mm universal socket and wobbly end extension. You use the socket to hold the nut while you turn the bolt with a wrench. I say Snap On because that's what I have and I know it will fit. Cheaper brands are often more bulky and may not clear. Give yourself a day to do both sides. Take your time and don't throw tools. Theyre expensive to replace when you lose them.
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Old Mar 21, 2011 | 12:22 PM
  #4  
TNT_Z28's Avatar
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Joined: Apr 2008
Posts: 360
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From: Minnesnowta
Car: 1987 Camaro Z28
Engine: 355ci, XE262 , 650dp
Transmission: T-5, RAM clutch
Axle/Gears: 3.23 limited slip
Re: Broken motor mount

Thanks doc. That's encouraging. would you suggest pulling the motor to make the job easier? That wouldn't be a big deal for me to do. Also you said a snap on 15 mm universal socket, is that a socket with a universal joint attached
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Old Mar 22, 2011 | 01:04 AM
  #5  
ASE doc's Avatar
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Joined: Apr 2010
Posts: 4,337
Likes: 29
From: Aurora, OR
Car: 87 IROC Z28
Engine: 355 cid TPI
Transmission: Custom Built 700R4 w/3,500 stall
Axle/Gears: QP fab 9" 3.70 Truetrac
Re: Broken motor mount

It's a socket with a u-joint between the square drive and the hex end. I have done these with the engine raised via a floor jack and 2x4 on the pan rail. I always swore I wouldn't do it again without removing the lower control arms. If you pull the A arms, you may as well replace bushings and ball joints. PST offers excellent polygraphite(polyurethane infused with graphite) bushings.
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Old Mar 22, 2011 | 07:22 AM
  #6  
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Re: Broken motor mount

I would agree you can get them with the suspsension on.
I did both of mine, just drove the car on a lift. It was a royal pain in the butt, but doable.
If you really don't have the time take it to someone.
My engine and transmission would lift about 3 or 4 inches when I got anything over half throttle when I bought my car. I don't feel it move at all now.
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