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Author Topic: Metal on metal ticking sound???  (Read 1594 times)
lakeholme
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« on: October 09, 2010, 07:38:03 PM »

Any suggestions as to what could cause an occasional metal on metal ticking sound in the general area of the fly wheel?
It is not constant and seems to go away well before the PG shifts.
I've pulled the cover and do not see anything wrong....
Thanks in advance for any suggestions as to what it might be.
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Phillip
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Planning 2016 Sentimental Tour, AACA
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"Charlotte AutoFair -- presented by the Hornets Nest Region, AACA -- is the largest and greatest Collector Vehicle Event in the Southeast." --September 18-21, 2014
My68SS
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« Reply #1 on: October 10, 2010, 10:15:40 AM »

Is it a 'per crank revolution' tick? Thin 'tinny' sound or harder, more solid metal sound?
Crack in the flexplate maybe? Starter motor throwout not fully retracting? ummm.....
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
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JohnZ
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« Reply #2 on: October 10, 2010, 12:59:00 PM »

Are all three converter-to-flexplate bolts tight?
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'69 Z/28
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lakeholme
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« Reply #3 on: October 10, 2010, 09:55:14 PM »

The bolts are tight. I've never thought of them working loose. Do they tend to do that? That would be worth knowing. Thanks John.
The sound is more solid metal.
The flexplate looks all right as best one can tell without more than just taking the cover off.
The starter throwout may very well be it...
Going to check that next. Thanks!
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Phillip
HNR-AACA, Senior Master
Planning 2016 Sentimental Tour, AACA
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair -- presented by the Hornets Nest Region, AACA -- is the largest and greatest Collector Vehicle Event in the Southeast." --September 18-21, 2014
lakeholme
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« Reply #4 on: October 11, 2010, 08:21:10 PM »

It was the starter throwout. All I had to do was realign it and tighten the bolts. A lot easier and cheaper than some other possibilities. Thanks again.
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Phillip
HNR-AACA, Senior Master
Planning 2016 Sentimental Tour, AACA
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair -- presented by the Hornets Nest Region, AACA -- is the largest and greatest Collector Vehicle Event in the Southeast." --September 18-21, 2014
My68SS
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« Reply #5 on: October 11, 2010, 08:44:58 PM »

It was the starter throwout. All I had to do was realign it and tighten the bolts. A lot easier and cheaper than some other possibilities. Thanks again.
Excellent! Smiley
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Rob
1968 L34/M40 SS
12 bolt posi 3.55
Build - 12C
JohnZ
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« Reply #6 on: October 12, 2010, 02:48:43 PM »

It was the starter throwout. All I had to do was realign it and tighten the bolts. A lot easier and cheaper than some other possibilities. Thanks again.

Do you have the starter brace installed from the forward end of the case to the block? If you leave that off, it causes lots of problems - the two-bolt attachment at the nose wasn't designed to support the cantilevered weight of the entire starter.
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'69 Z/28
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lakeholme
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« Reply #7 on: October 12, 2010, 05:31:43 PM »

Which explains why the problem came on gradually!  Thanks, John.
In my defense, I did not install this one, my mechanic's son did. And they did not charge me to do it.  So, I guess you get what you pay for...
I drove the car on two AACA tours of over 500 miles each this summer, but before the first one we switched out the starter attempting to deal with the 68 starter heat problems.  Both trips the temperature in the shade was in the high 90s, which played havoc with several of the other 50s and 60s  cars on the tours. 
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Phillip
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Planning 2016 Sentimental Tour, AACA
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair -- presented by the Hornets Nest Region, AACA -- is the largest and greatest Collector Vehicle Event in the Southeast." --September 18-21, 2014
jdv69z
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« Reply #8 on: October 14, 2010, 03:39:11 PM »

I've replaced several starters over the years in my Chevys, and I have never taken one out that actually had that brace in place. Seems common? Are there that many Bubbas out there that are too lazy, or whatever to put it back in? If it weren't for reading about it here, I would know it existed, cause I've never removed one from any car I've worked on.

Jimmy V.
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Jimmy V.
JohnZ
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« Reply #9 on: October 15, 2010, 09:58:54 AM »

I've replaced several starters over the years in my Chevys, and I have never taken one out that actually had that brace in place. Seems common? Are there that many Bubbas out there that are too lazy, or whatever to put it back in? If it weren't for reading about it here, I would know it existed, cause I've never removed one from any car I've worked on.

Jimmy V.

It's VERY common for Bubba not to put that brace back on when changing the starter, because it takes extra time and effort. It was put there originally to support the cantilevered weight of the armature case, maintain starter alignment, and to prevent damage to the Bendix drive and the starter nose. Chevrolet didn't add the cost of the boss on the block, drilling and tapping the 5/16"-18 hole in the boss, adding the brace, and adding the threaded stud extension on the starter armature case top bolt because it wasn't necessary.
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lakeholme
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« Reply #10 on: October 15, 2010, 12:00:41 PM »

Thanks John, for the fix and the explanation.
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Phillip
HNR-AACA, Senior Master
Planning 2016 Sentimental Tour, AACA
AACA Southeastern Division Spring Meet Chair
"Charlotte AutoFair -- presented by the Hornets Nest Region, AACA -- is the largest and greatest Collector Vehicle Event in the Southeast." --September 18-21, 2014
click
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« Reply #11 on: October 25, 2010, 10:36:56 AM »

 My car was missing the brace too. suppliers had 3 different kinds, part numbers. Got it right on the 2nd try.

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Click is Jim , central Minn.  Moderator at Team Camaro www.camaros.net
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