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Author Topic:   Don't know if this is the right place, but....

Posts: 62
From: Niagara Falls, ON
Registered: Jan 2003

posted 04-18-2005 08:00 AM     Click Here to See the Profile for Gerry   Click Here to Email Gerry     Edit/Delete Message   Reply w/Quote
on the weekend I got my 57 out and took it for a drive. In the three years I've had I have never realy tried to see what it would do from a dead stop.
Now some info it has a 3:50 open rear end, mild 390 and an FMX.
The first time I tried it was from an idle and just mashed the gas. Not bad about 40 feet of rubber from the right rear tire, so I try it against the converter, well it goes up in smoke shifts into second and keeps smoking. Well that's enough of that so I head home. When I get to the first stop sign I make a right turn and the rear end clunks a couple of times and the left tire is squealing going around the corner and scares the crap out of me. I drive back home and there is no noise from the rear end in a straight line but turning corners it clunks and the inside tire squeals.
I jacked the car up when I got in the garage and turned one wheel, an hour before when I adjusted the brakes, when I turned one wheel forward the other wheel turned in reverse. Normal for an open rear. Now both wheels turn in the same direction forward and reverse.

Now the question what in the Hell happened? Did something break or has this thing always had a locker. Please say I didn't break it!

[This message has been edited by Gerry (edited 04-18-2005).]

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Posts: 172
From: South Wales UK
Registered: Apr 2003

posted 04-18-2005 08:20 AM     Click Here to See the Profile for ukracer   Click Here to Email ukracer     Edit/Delete Message   Reply w/Quote
Sounds to me like you broke something inside the diff unit and the bits have jammed it up so you have now got a 'spool', that is to say the left and right half-shafts are connected solidly together in the differential. This is why it makes bad noises and squeals the inside tyre. Lockers don't suddenly start working, they suddenly stop. Diffs suddenly stop working though! At least you live in a country where parts are cheap and easy to find. This is why I have a number of 9 inch diffs floating about (and lots of other parts). Sorry to be the bearer of bad news.
Cheers, Martin

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Posts: 27499
From: Lyons, IL, USA
Registered: May 99

posted 04-19-2005 02:13 PM     Click Here to See the Profile for Moneymaker   Click Here to Email Moneymaker     Edit/Delete Message   Reply w/Quote
I think that you may have a traction lock differential in there Gerry and did not know it.
Friction modifier will cure the clunk around corners.

Alex Denysenko
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Posts: 62
From: Niagara Falls, ON
Registered: Jan 2003

posted 04-20-2005 07:44 AM     Click Here to See the Profile for Gerry   Click Here to Email Gerry     Edit/Delete Message   Reply w/Quote
I think it's broke. This is what I tried. Thanks to Greg Cook at Ford Muscle.


On 2005-04-18 08:10, GregCook wrote:
It is possible to weld the spider gears to the case. I've seen this happen when people get stuck in the snow and just spin one tire for a long time at high speed. One axle is not moving and one is doing 100 MPH. Those little spider gears are flying around in there, get hot, and weld themselves to the case.

It's strange that it would happen that quickly on your car, but who knows?

Carefully now!!!!!!

Block the front wheels and the left rear, point the front so it won't hit anything, jack up the right rear wheel, put it gear and see if the right rear will break loose. Trying bumping it forward to reverse gently at first then bang it around a little once you feel "safe".

No go? Pull it out.......


Well Greg I tried your idea. I followed your instructions to the letter. All it would do was spin the left wheel that was still on the ground, so I'm sure the spiders are welded.
Now that I think about it I had the same thing happen about 40 years ago in my first 57 only I was alot less forgiving in the way I treated that poor car. I would back up put it in neutral rev the hell out of it and drop it into low and still be going backwards with the right tire smoking till I couldn't see or breath from the smoke. At that time I got another pot for it for 10 bucks at the salvage yard, and didn't worry about what had happened to it.

So now it takes 40 years to find out what things not to do.
I'm sure it will cost me more than $10 to fix it this time.
SOOOO anyone got a 28 spline Trac Loc for sale?????? Let me know.


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Posts: 62
From: Niagara Falls, ON
Registered: Jan 2003

posted 05-04-2005 03:27 PM     Click Here to See the Profile for Gerry   Click Here to Email Gerry     Edit/Delete Message   Reply w/Quote
Finily got to taking the rear end apart. Found one of the 4 spiders broken into 5 pieces. The pin is so chewed up I can't even take it apart. The pieces got into the whole thing, not a part left that isn't junk.
Ordered a rebuilt drop in center section. $500.00 with shipping. Live and learn.

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