Weird Starter Problem
Mike
The starter nose pieces were breaking because of excessive timing advance at startup.
Steve g
Normal operation is that the magnetic relay of the solenoid is energized which pulls a plunger back. The plunger is connected to the drive through levers. On the back of the plunger is the contact disc that then connects the batt stud to the starter stud. So in operation the key switch energizes the magnet, the plunger moves back pushing the drive into the flywheel. When it gets to the end of it's stroke the contact disc hits the two studs and provides power to the motor windings.
Steve g
Steve g
Just how many starters have you broken? If it's more than one, then you have a problem with either the mounting of them or, as Steve said, the timing is way too advanced.
You need to first make absolutely certain that the timing mark on the harmonic balancer is in the correct position. When the balancers get old, the rubber ring between the two metal parts can fail and cause the outer metal ring ( with the timing mark on it ) to move in relation to the hub.
Unless you verify that the timing mark is where it is supposed to be, then you cannot be sure that your timing is accurate. Once you are absolutely sure that the timing mark is where it should be, then set your timing to factory specs.
If that is all good, then you have to make sure that the starter is mounted correctly. I don't know how one could be incorrectly fitted, but maybe the mounting holes in the block are not exactly where they should be, or are worn and the bolts are a loose fit. It stands to reason that the centre lines of both the starter and crankshaft must be absolutely parallel for everything to spin smoothly.
Check and get back to us.
Regards from Down Under.

aussiejohn
The studs are the way you described them. The 2 large studs, one has the strap going into the starter from the selinoid. Ill put a picture up soon
The Best of Corvette for Corvette Enthusiasts


#1-make sure your new "Start" switch shuts off.
#2-make sure the solenoid is good.
The studs are the way you described them. The 2 large studs, one has the strap going into the starter from the selinoid. Ill put a picture up soon
Steve g






