3K Stall Torque Convertors - New Shipment - Page 2

Jul 18, 2013 | 10:23 PM

#26

Exotic-metal55

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From: Texas

2003 CL55

Quote:

Originally Posted by dre5373

Any chance you know the K-factor and torque numbers used to determine the 3K stall? I've read previously that these will work just fine in a n/a 55 but I'd like to know what the stall would be with my lower torque curve.

These numbers vary depending on the power range of your car, as no one converter will stall the same for a car making 430 hp VS a 650 hp. When you purchase a converter, the stall matched to your mods and power range. We put one in a SLR Mclaren and it was a match made in heaven

Quote:

Style_Front It's wouldn't be difficult to add such a feature, should be able to compute between gear, wheel speed and RPM.

But yeah, most transmissions also let the lock go between shifts as well.

I emailed John at IPT earlier today, hopefully he can provide some insight on the E55 AMG lock up function and its programming.

The clutch in these converters is a high quality race clutch and has 3 disc VS 2 on the stock unit. You can lock them up but will need a tuner to do that for you or you will have to make a custom lock up switch, like we used to do on the LSX converters.

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CL55 UPD Cold Air Boost kit, UPD 3000 stall converter, UPD 77mm SC clutched pulley and beltwrap kit, Custom long tubes, UPD crank pulley , UPD suspension kit, UPD SC pulley, Aux. HE, Trunk tank w/rule 2000 pump, Mezeire pump, UPD 5pc idler set, Aluminum rotor hats.

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Jul 19, 2013 | 12:15 PM

#27

Style_Front

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ez-go

Just as I thought. The lock up function is really no different from other autos in that its sole purpose is for economy. It stays out of the equation under heavy loads and despite having race clutches, the lock up function does nothing while you are romping on it. I'm sure it's a great part but I'm not sure why we need to sell it as some thing it's not. It's not going to give you any more or less Economy while cruising than the stocker, it's also not going to give you any more power in any gear. The torque converter is not a multiplier of any sort. It will however provide some slack to the connection between your motor and forward gears which places you further into your sweet spot. Obviously we make more power after 3k than we do before. It will also give a nice yank when you're already moving, drop a gear and lay into the motor as well. It is proven to make auto cars faster, period. They do also lose MPG while moving from light to light, around town, etc and are prone to creating higher temps compared to that of a lower stall converter of equal size. That's not to say the existing cooling system isn't adequate enough to manage the added heat. Not at all, only a car equipped with a trans temp gauge could say one way or the other definitively.

Also using the factory torque rating of 516 and an observed stall speed of 3000rpm would give these particular converters a K-factor of 132.0473$373838$48383):$:&;$

Round it to 132 for simplicity sake.

Aug 4, 2013 | 06:00 PM

#28

Exotic-metal55

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From: Texas

2003 CL55

Factory converter in most stock cars have two clutch disc and most high performance converters like this one have 3. Holding/clamping force is pressure times area, increase the area or pressure and the holding/clamping force is increased. With the added power of these engines, the extra clutches cut down on slip under partial loads, and can also be used with a converter lock up switch for additional dyno and race purposes. The factory stock converter clutches are a weak link and so are other parts in them that are upgraded for higher power.

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Aug 4, 2013 | 06:04 PM

#29

Style_Front

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ez-go

Is this company willing to put a torque rating on the lock up function? Without one I would never lock up for race or dyno purposes.

Aug 5, 2013 | 05:11 PM

#30

Exotic-metal55

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From: Texas

2003 CL55

Quote:

Originally Posted by Style_Front

Is this company willing to put a torque rating on the lock up function? Without one I would never lock up for race or dyno purposes.

With a manual switch or ECU lock up of the converter under WOT, rating is 800 ft lbs. Sure is fun to lock them up with a switch or ECU control, feels like a little shot of N20.

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Aug 5, 2013 | 07:10 PM

#31

Style_Front

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ez-go

Having had a switch in my last car I can say forgetting the switch during shifts was flat out violent, in particular downshifts. But just to reiterate the TCU would absolutely never allow you any thing close to WOT while leaving the lock up engaged. It's an economy function. It's awesome that this company supplied such a sturdy one but the only tangible use I can imagine is using it on a dyno to see what your the difference in HP is locked vs unlocked.

I'll gladly eat crow if I'm wrong but I'd wager a case of beer 800 foot lbs is the rating for the converter and not specifically the lock up function since TCU's do not engage the lock during shifts or WOT.

Aug 12, 2013 | 08:51 PM

#32

Exotic-metal55

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Joined: Jun 2008

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From: Texas

2003 CL55

Quote:

Originally Posted by Style_Front

I have locked plenty of them up in 3rd gear at the track or on a dyno, with a switch. Not made to be locked up on shifts but does help in 3rd for some extra mph.

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Sep 3, 2025 | 08:38 PM

#33

Bab26

Newbie

Joined: May 2024

Posts: 9

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E55 w202 2.3 turbo

Tq convertor

Quote:

Originally Posted by shardul

We received a new shipment of high stall torque convertors

Product Description

3000 stall converter for street or strip
11" diameter vs stock 12"
10 lbs lighter than stock to reduce rotating mass
triple lock up clutch
high performance pump and bearings
all new and no core charges!

Price is 950 plus shipping in the continental US

Members who have this unit please post your reviews.

do you still sell these?