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Flexplate grinding the starter, help!

7823 Views 8 Replies 5 Participants Last post by  bolensboneyard
Hi, I have a 67 Coupe autom. with a 302 2V from a 68.
When I start the car, you can hear sometimes a little grinding sound coming from the flexplate touching the housing of the starter slightly.
It gets worse when I put the car in Drive and hit the gas.

We took off the tranny twice already. First we replaced the separator plate, which was not the correct one. Noise was still there. Last week we changed as well the flexplate, bought a new one. Installation was done correctly. Torq convertor was put on correct with the drainplugs through the wholes. It fitted perfectly and the bellhousing went straight on the engine without any effort. Now it looks like the flexplate tooth slightly touch the housing of the starter. What can I do here? Grind off a bit more of the starter housing? It looks like the correct type of starter.
(the car by the way starts right up, no problems here)

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No I did not, it still is the same starter as how I bought the car. But the grinding sound has always been there from start.
I am not sure if the 302 came off an automatic or not. I will check tonight the serial nr of the C4. Seems to be original.
Meanwhile here are some pictures of the starter. The flexplate is a 157 teeth and brand new. It is correctly mounted with the spacerplate on the right side. 28 oz type balance weight.Torq convertor also correctly installed with the drainplugs through the holes.
Here are some pics of the starter. I cannot see any serial nrs on it.

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We found the cause. We disasembled the starter and found out that the pin that holds the mechanism that engages the starter was not in. Meaning that after starting the axle was not put completely back in the housing. The pin was swimming around somewhere in the starter housing. The cause of that was that the cap which holds the pin was dented and coud not hold the pin in place. We dented out the cap, put the pin back in. Then installed the starter again. Noise was gone, problem solved.

Here is a pic of the starter, you can see the pin is gone. That caused the small wheel with the teeth not to draw back completely in the housing. And the flexplate was grinding that part.
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