Best Torque converter? 2001 PSD 7.3 w/ 4R100 - Diesel Forum - TheDieselStop.com
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99 & up 7.3L Power Stroke Engine and Drivetrain Discussion of the 99 & up 7.3L Power Stroke diesel engine and drivetrain in the 1999-Up Super Duty trucks and Excursions. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 7.3L Power Stroke engine.

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Old 12-28-2010, 10:05 PM   #1 (permalink)
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Best Torque converter? 2001 PSD 7.3 w/ 4R100

Who has best converter for 4R100 behind 7.3.

Had new converter put in, think its basically a reman, but has triple disc set-up. problem is just like the OE original converter, it seems to loose/drives thru the converter while its unlocked.

and if towing and take off hard its just screaming in low gear, not moving very fast, then slam into second and lock up same time then since wasnt moving very fast in low/unlocked. sorta lugs for moment then gets going.
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Old 12-28-2010, 10:14 PM   #2 (permalink)
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I got a bit of the same prob. Guy who built mine isn't around anymore. I think low stall rpm works better than OE stall rpm if you tow a lot.

Sometimes I think that the trans is a bit at fault for being tired. Putting in a new NADP unit next year or sooner.

Everyone raves about precision industries converter but it's a lotta money... paying for the name. Can get other good triple clutch units for half that.

Over-revving and not upshifting seems more trans prob than converter but just guessing.
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Old 12-28-2010, 10:34 PM   #3 (permalink)
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I got a bit of the same prob. Guy who built mine isn't around anymore. I think low stall rpm works better than OE stall rpm if you tow a lot.

Sometimes I think that the trans is a bit at fault for being tired. Putting in a new NADP unit next year or sooner.

Everyone raves about precision industries converter but it's a lotta money... paying for the name. Can get other good triple clutch units for half that.

Over-revving and not upshifting seems more trans prob than converter but just guessing.
I have heard of this John Woods on converters and I think he uses Precision Industries, not sure if he has a special spec on his stuff or not.

mine is even loose when floored from dead stop and drives thru the gear changes unlocked. not if you take off part throttle then floor it it will lock going into second and accelerate much better.

thinking of a low stall RPM myself, but dont want to spend a fortune on one.
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Old 12-28-2010, 10:49 PM   #4 (permalink)
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If you don't have the cash for PI's $1100 unit send Adrian Tavano a shout tavano72@yahoo.com around $600 for HD 3 clutch unit, low stall another $60-80 I think. He knows his stuff, got one in my truck. Used to sell'em under powerstrokeconverters.com but not enough demand. Forum member too.
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Old 12-28-2010, 10:59 PM   #5 (permalink)
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Could your slipping be a delayed 1 to 2 shift? The 2001s had a bad second gear clutch, diode. Do a search for mechanical diode. See if the symptom matches.
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Old 12-28-2010, 11:12 PM   #6 (permalink)
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Could your slipping be a delayed 1 to 2 shift? The 2001s had a bad second gear clutch, diode. Do a search for mechanical diode. See if the symptom matches.
Shouldn't be. Trans worked fine at 200,000 miles when took it to my tranny Guy for converter to be changed out. Arnett Racing transmissions. he does my glides in racecar, prob does 3 E4OD/4R100 trans a week. Anyway prob my fault for not asking for a low or extra low stall speed when he got a me a converter, although it does have triple disc lock up. but never had probs with original single disc slipping that I was ever aware of. It's a Champ converter, OE stall speed with triple disc.

Tranny althought it was fine and asked him to only change the converter, he pulled tranny out, completely disassembled it, cleaned in steam parts washer and rebuilt it with Trans Go "tugger kit", all new clutches and bands. He even installed an extra clutch in 2nd and put in a dbl element sprag (twice torque capacity) or mechanical diode. so its beefed up pretty good, save for aftermarket H.D. shafts, which sure I dont need at my level
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Old 12-29-2010, 08:30 AM   #7 (permalink)
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Who has best converter for 4R100 behind 7.3.
That's all I can say, is the Brian Thompson from BTS transmissions put in a Precision Industries, "Stallion" torque converter in my X rebuld, 7 years [& 130k] ago...

Painted purple.....

I'm happy with it

The only downside, is that it doesn't have a drain plug in the converter...

So that's all you can get is about a 7 qt change, out of a capacity of nearly 20 qts...unless you do a power flush....

But, a 20 qt power flush @ $12/qt [Schaeffer synthetic oil] adds up real quick..

That's why I'd rather do the 7 qt every year...
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Old 12-29-2010, 08:34 AM   #8 (permalink)
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That's all I can say, is the Brian Thompson from BTS transmissions put in a Precision Industries, "Stallion" torque converter in my X rebuld, 7 years [& 130k] ago...

Painted purple.....

I'm happy with it

The only downside, is that it doesn't have a drain plug in the converter...

So that's all you can get is about a 7 qt change, out of a capacity of nearly 20 qts...unless you do a power flush....

But, a 20 qt power flush @ $12/qt [Schaeffer synthetic oil] adds up real quick..

That's why I'd rather do the 7 qt every year...
Heard of Brian of BTS, well known for his trans, think my local guys is prob just as good, atleast unless your a truck puller or something. Didnt know Brian used P.I. converters. thought he used another brand. Also heard this John Wood (not sure who he is) also used P.I. converter too
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Old 12-29-2010, 10:38 AM   #9 (permalink)
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Old 12-29-2010, 12:29 PM   #10 (permalink)
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How many miles on this trans? If it is a fresh rebuild, get a PI unit since they will give you a free restall within 2 yrs if needs be from the last time I bought one. If you have miles on it, I wouldn't put a new TC on it that is more expensive than stock and that is if you must change it. Once the trans breaks, you have to pay to have the TC cut apart, cleaned, welded back and balanced. Cost me $400 the last time.
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Old 12-29-2010, 12:35 PM   #11 (permalink)
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How many miles on this trans? If it is a fresh rebuild, get a PI unit since they will give you a free restall within 2 yrs if needs be from the last time I bought one. If you have miles on it, I wouldn't put a new TC on it that is more expensive than stock and that is if you must change it. Once the trans breaks, you have to pay to have the TC cut apart, cleaned, welded back and balanced. Cost me $400 the last time.

trans has about 20,000 miles on it now, fresh extra 2nd clutch adding 33% more torque capacity and dbl element sprag. Tranns go tugger kit, pump mod etc.
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Old 12-29-2010, 12:37 PM   #12 (permalink)
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How many miles on this trans? If it is a fresh rebuild, get a PI unit since they will give you a free restall within 2 yrs if needs be from the last time I bought one. If you have miles on it, I wouldn't put a new TC on it that is more expensive than stock and that is if you must change it. Once the trans breaks, you have to pay to have the TC cut apart, cleaned, welded back and balanced. Cost me $400 the last time.

Did you ever run the GTP38r turbo with stock injectors before upgrading to stage II BPD injectors?

and what is BTS "Big oiling system"?
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Old 12-29-2010, 12:39 PM   #13 (permalink)
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trans has about 20,000 miles on it now, fresh extra 2nd clutch adding 33% more torque capacity and dbl element sprag. Tranns go tugger kit, pump mod etc.
I suppose you could get away with installing a PI unit but it costs about $1000. That way you can get it restalled if you don't like the stall speed.
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Old 12-29-2010, 12:40 PM   #14 (permalink)
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Did you ever run the GTP38r turbo with stock injectors before upgrading to stage II BPD injectors?

and what is BTS "Big oiling system"?
No. The GTP38R was just installed a month ago.

That is where BTS sticks another oil pump (reverse rotation) on top of your pump. Terminator also uses dual pumps but theirs is one behind the other.
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Old 12-29-2010, 03:32 PM   #15 (permalink)
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