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Old 10-05-2008, 09:14 PM
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starter quit

i recently switched my manual 350 3/4 ton chevy to an automatic with a 400 turbo. it started a bit rough, like the starter needed shimmed, and i put it off for awhile. finally my luck ran out and it wouldn't start anymore. funny thing was that the starter just stopped working, it was like the starter was pulling too many volts and draining my battery. i have replaced the starter and battery (one that has 780 cold cranking amps, more than enough) and it still won't turn over. as soon as i hit the ignition it shoots the bendix gear out and it gets stuck in the flex plate teeth. i've tried shimming it any way that i can think of, but to no avail. the teeth on the flex plate show some wear but nothing too severe. its really getting frustrating . if anyone has an idea on what the problem may be let me know...im open for any suggestions!
ryan

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Old 10-05-2008, 09:56 PM
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Have you checked the flex plate and transmission bolts? They may have come loose. This can give you un shim-able starter alignment problems. Check the transmission bolts first, then the felx plate. Don't just try to wiggle the flex plate by hand, the torque converter can make it "feel" tight. Get a pry bar on it and see if you can move it (don't go gorilla on it, would hate to bend it!)
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Old 10-06-2008, 09:41 AM
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hmmm

i didn't think of that! i'll give it a try when i get to the house. i'll let ya know if it works out. if not, it looks like i'll be dropping the tranny to replace the fly wheel
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Old 10-06-2008, 12:08 PM
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How long did you run it with the starter grinding? My guess is you pooched the ring gear.....
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Old 10-06-2008, 12:20 PM
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Hi,
If you remove the starter then take the solenoid off, then put the starter back in, you can now move the gears together by hand, letting you see just what you need to do for full engagement of the gears.
Good luck,
Rich
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Old 10-06-2008, 01:24 PM
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thanks

i did the conversion about this time last year and i only ran the truck every so often. the flex plate doesn't look like it needs replaced, but it may be warped or bent out of shape. any tricks on how to make the job as painless as possible?
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Old 10-06-2008, 04:20 PM
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Put a breaker bar on the front bolt on the damper and make sure the engine will turn by hand. If the old start bendix broke the parts could be wedged in the bell housing and not alowing the engine to turn.

Also check the battery cable at both ends. If it has been working real hard you may have burnt a terminal or the block or starter connection

Chet
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Old 10-06-2008, 04:21 PM
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If you test the new starter on the ground does it work ?
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Old 10-06-2008, 04:30 PM
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the motor will turn by hand, so i know its not frozen up yet. the old starter bendix didn't break either. from what i have gathered, and what my mechanic buddies are telling me, the ring gear is messed up from me being lazy and not shimming it when i should have. if you have any easy way of dropping the tranny and replacing it, i'm all ears.
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Old 10-06-2008, 04:32 PM
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oh, the starter does work when hooked up to the wires as long as it isn't engaged in the flex plate. i did also check my wiring and grounds and they seem sound from what i can tell.
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Old 10-06-2008, 04:41 PM
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Quote:
Originally Posted by youngblood85
the motor will turn by hand, so i know its not frozen up yet. the old starter bendix didn't break either. from what i have gathered, and what my mechanic buddies are telling me, the ring gear is messed up from me being lazy and not shimming it when i should have. if you have any easy way of dropping the tranny and replacing it, i'm all ears.
there is no easy answer. Fortunatly on a truck it should not be a big deal to drop the tranny out.
belhousing bolts (6) torque converter bolts (3 or 4) unbot cross member from truck, shift linkage and speedo cable. You most likely with a little help and the right tools could accomplish removale in an hour or so. You should have a helper to balance the tranny. You may also want to remove the distributor cap as the engine will want to tip back and it may hit the fire wall and break the cap. If you have a second jack, use it to support the rear of the engine.
a 2 foot extension and a good swivel will save you a bunch of time and busted knuckles.


good luck
Chet
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Old 10-06-2008, 04:52 PM
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thanks chett

ill be doing this the next few nights after i get home from work. I'll keep ya posted on how it goes
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Old 10-06-2008, 04:57 PM
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There are differnt flywheels for small blocks, be sure you get the right one.
153 and 168 tooth, internal or external balance. Once you have it out there should be a number on it.
You dont want to do it twice

Chet
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Old 10-06-2008, 05:03 PM
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i do know that i have a 168 tooth and that's the correct size. but how do i tell if its internal or external? the motor is out of a vette, but which year, i have no idea. i guess i have to get the casting numbers off of it to find out, but where would i find out what it is? is there a website that will tell me, or do i need to go to the part store and have them look it up?
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Old 10-06-2008, 08:11 PM
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http://www.mortec.com/castnum.htm
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