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Bad Torque Converter?

Posted By Rods 15 Years Ago
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Rods
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Dennis,



Thanks for the info. I think I can read this so I will see what I can do.



Appreciate it.



R

1957 Thunderbird

312
Dennis K.
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I have a copy of the 57 Ford shop manual and I didn't think they had anything on an automatic transmission, and that its in a separate FordOMatic manual.  Here are the proceedures from the 1962 Galaxie Shop Manual for stall and stator test.

Regards,

Dennis

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Ted,



Thanks for the advice, I will pass this onto the mechanic when I see him. I do not know if they checked that. We think these engines are simple but MAN there are a lot of things that have to work perfectly in order for everything to run right....

1957 Thunderbird

312
Ted
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Rods (8/2/2010)
I just got it back AGAIN, and still stalling when you put into reverse or 1st if you don't give it gas right away......
You might consider tightening up the breaker point gap as a solution to the stalling in gear issue.  Converting the distributor to electronic ignition is also another possible fix.

Lorena, Texas (South of Waco)


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All of the carbs that the shop has are racing carbs. I told him to go ahead and order a Eddelbrock 500 or something about that size. He thinks the 600 is too much although some people have had no problems. I was going to go with Holley but he recommended against is unless you want all original. I prefer to have it drivable for now (like the aluminum radiator). Ordered yesterday. Should be in by the end of the week and installed next week. Hope that was the right choice... I have read +- for both sides of the discussion. I was told by several to stay away from the DEMON and their quality control have done down hill over the last year or so. I read several posts both for and against all of them.



I agree that the TC is not the issue. I am also having them install a secondary fuel filter just in case something is getting into the fuel but that is more of a precaution than anything.



I will keep you posted to the results!



Rod

1957 Thunderbird

312
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Hello Steve! I just want to put a couple of more cents in.I really believe the problem here is carb related.The fact it doesnt stall if you get gas to it in time sounds like carb to me.Can you borrow a known good carb-Holley or otherwise to try?Before you go buying an $Edelbrock replacement get some opinions from people on this site.Lots of good choices available.

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GREENBIRD56
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Just like the cam sprocket "error" situation (or lack of one) - it seems like a far stretch to imagine an FOM torque converter stalling a T-bird engine due to a sudden internal tranny malfunction. Just my personal opinion and maybe worth less than two cents.... 

"Oldcar" Mark just went through this constant stalling drill with his outfit and it turned out to be a series of compounding problems - not just one or another. He found a PCV with way more air flow than desirable (vacuum leak) - a "rebuilt" distributor with a ton of extra endplay (variable idle timing) - issues with the carb float hangers (constant level changes) - I'm sure I'm missing some stuff.......but the point is, that idle engine torque is lost from a host of small issues and all a guy can do, is set about elimination - one by one.

The "rebuild" of the carb and distributor - make both of them suspect.

http://forums.y-blocksforever.com/uploads/images/9ea2bf28-00c4-4772-9ac7-d154.jpg 
 Steve Metzger       Tucson, Arizona

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Dennis K. (7/25/2010)
In the operation of a torque converter the Reactor One Way Clutch (OWC) locks until the Turbine Speed reaches approximately 90% of engine speed. After that point the OWC begins to overrun or freewheel eliminating the torque multiplication and acting strictly as a 1:1 fluid coupling.



If the ReactorOWC fails to lock up there will be no torque multiplicationand acceleration will be sluggish.



If the OWC islocked up all the time the converter will always act as a torque multiplier and will usually generate excessive heat.



You should be able to perform a stall test tocheck the torque converter stall speed, along witha road test to check torque conveter function. A Ford Shop Manual will explain how to do this.







I have the 57 Ford Shop Manual and the only testing I saw was regards to the trans. fluid pressure. I did not see a TC function test. Is this the put in gear at 100rpm and checking pressure? Sorry, Dennis, just confused. Can you direct me to where I can find info on the stall test?



Thanks



R

1957 Thunderbird

312
Rods
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I just got it back AGAIN, and still stalling when you put into reverse or 1st if you don't give it gas right away. I am thinking the old carb might just be at the end of it's life and I should just replace with a new edelbrock 500-525 and be done with it. Good size for the 312?

1957 Thunderbird

312
mctim64
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oldcarmark (7/29/2010)
I see you replaced the timing chain.Did your guy know how to set up the chain as far as the location of the timing marks on the gears.The marks face right when looking at front of motor.There should be I believe 15 pins between the marks.Most late models have the gear marks aligned vertically as in cam mark at bottom and crank gear mark at top even with each other.

12 pins as John said and if he had it off as much as one tooth it wouldn't be a "Speed Demon" it would be a dog if it ran at all.  I think the chain was put on correct even if not degreed. Wink

http://forums.y-blocksforever.com/uploads/images/b1f2e0d6-2566-46b3-b81d-3ff3.jpg   God Bless. Smile  Tim                           http://yblockguy.com/

350ci Y-Block FED "Elwood", 301ci Y-Block Unibody LSR "Jake", 312ci Y-Block '58 F-100, 338ci Y-Block powered Model A Tudor

tim@yblockguy.com  Visalia, California    Just west of the Sequoias




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