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Torque convertor problem

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Wayne clark
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Torque convertor problem

Post #1 by Wayne clark » Sun Feb 02, 2020 4:31 pm

Pulled the trans in my 67 all stock driveline ro replace a front seal. Found three places around starter ring gear with teeth ground about half way off as if the car might have had a starter problem dont know any history. Cars has cranked great in the2 mo. I've had it. Strange part is the convertor pump drive has bad worn areas on it that line up with the worn teeth. Is it possible the flex plate mY have been wrapped
During a previous repair? Had a bad vibration in the driver fender with the seal on the inner fender liner
.solved that with a lead shim.any one have any ideas open to all suggestions. Thanks

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Re: Torque convertor problem

Post #2 by mustang6 » Mon Feb 03, 2020 1:48 am

Don't know about the converter pump drive wear (first I've ever heard of that) but the ring gear wear is normal. Every time the starter drive is thrust into the ring gear it induces a bit of wear, and since the engine usually only stops in 3 or 4 places (due to compression cycles), that's where all the wear accumulates. A cheap trick on manual transmission flywheels is to take off the ring gear and flip it around, but on automatic flexplates/converters they aren't removable. I'd say replace it now while you have it apart and save yourself some grief later on.

But I'd continue to search for an answer on the drive pump before you do, to make sure you don't have something else you need to fix while it's apart.

68 Mustang 200 ci, Aussie 250-2V head, Dual Headers, Comp Cams 252H, DSII w/MSD 6AL, T-5, V8 suspension.

65 Ranchero 200 ci, late 170 head, Autolite 1101, 3.03 3 speed, Maverick 8" 4 lug rear with 3.55 gears.

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Re: Torque convertor problem

Post #3 by bubba22349 » Mon Feb 03, 2020 12:32 pm

X2 I agree with all the above in mustang6's post and will add that the front pump bushing may also need to be replaced. Plus if you are seeing any signs of wear or ruffness on the convertors front hub that fits into the front pump the converter for sure should be rebuilt or replaced, a new seal and front pump bushing won't fix that for very long. As to the flex plate being worpped you can test that by putting a dial indicator on the converter and checking for excessive runout or replace it with a new one. Good luck :thumbup: :nod:
A bad day Drag Racing is still better than a good day at work!

I am still hunting for a project car to build but with my current low budget it's not looking so good. My Ex- Fleet of Sixes these are all long gone! :bang: 1954 Customline 223 3 speed with O/D, 1963 Fairlane project drag car with BB6, 1977 Maverick 250 with C4, 1994 F-150 a 300 with 5 speed.

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