Another funny noise and solution - Team Camaro Tech
Troubleshooting Diagnosing problems done here.

 
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post #1 of 8 (permalink) Old Aug 29th, 03, 12:10 PM Thread Starter
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In addition to the drive shaft issue, the starter was making the car shake when starting up in the mornings. When warm it starts with just the touch of the key and was not noticeable.
While having the driveshaft replaced, the mechanic noticed one of the 2 bolts holding the starter in positon was GONE. The starter was loose and hanging by a few turns of the remaining bolt.
He had pulled the starter a few weeks ago to install my wire guard tube. Somehow it worked loose and fell out along the road on the way to Seattle.
We got a new bolt and used loctite on it, now the starting vibration is gone.
Another mechanic said there was a brace of some sort from the pan bolt to the starter for extra support but Ive never seen one.
Has anyone seen them? Are they factory or aftermarket designed?
Any ideas on that one folks?
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post #2 of 8 (permalink) Old Aug 29th, 03, 12:25 PM
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There are two long, thin bolts that hold the starter nose to the body of the starter motor. At the back end of the starter (the end toward the front of the car), one of those bolts has a threaded stud on it. That brace runs from that threaded stud to a threaded hole in the side of the block just below the cylinder head. It was a factory part on some (I'm not sure if all). My 307 had it and I still use it. Rick's part number is RC-339 or RC-337.


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post #3 of 8 (permalink) Old Aug 29th, 03, 12:46 PM
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Yep, that bracket was from the factory. I've seen it on some of the vans and pick up trucks in our fleet at work that I have worked on throughout the years. I beleive that it is held on by one of the motor mount bolts and it goes up against the front of the starter for some support. They usually do not get put back on when replacing the starter, at least at our shop. So you put locktite on the starter bolts eh? Hope it was medium duty instead of the heavy duty locktite. If not you might be inventing some new choice words if and when you need to take them out. Hope not. At least you know it won't be falling out again. Take care.

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post #4 of 8 (permalink) Old Aug 31st, 03, 01:40 PM
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Failure to re-install the starter brace is one of the leading causes of broken starter noses; that brace carries all the weight of the heaviest part of the starter, and without it, that weight is cantilevered against the aluminum starter nose casting, which was never designed to carry it. The bottom of the brace goes over the extended threaded part of the upper long starter case bolt, and the upper end uses a 5/16"-18 x 1/2" bolt into a tapped hole in the block provided just for that purpose. Many mechanics just leave it off when changing out the starter - they figure the customer will never know.

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post #5 of 8 (permalink) Old Sep 2nd, 03, 12:47 AM
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Agree with JohnZ, General put it there for a purpose and it works. Learned the hard way, plus from helping others on their starter motor problems.

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post #6 of 8 (permalink) Old Sep 2nd, 03, 03:57 AM Thread Starter
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Going to order it today, thanks guys, it all makes sense with the weight of that starter.
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post #7 of 8 (permalink) Old Sep 2nd, 03, 07:38 PM
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post #8 of 8 (permalink) Old Sep 5th, 03, 10:19 AM
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I think the brace was used on large flywheel starters, the ones with the holes in-line.
The starters with staggered bolt holes has better support allready.
The brace can be used with either kind of starter though.
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