How Torque Converter Lockup Works Automatic Transmissions

[@v8packard]

Great video! Packard patented a hydraulic lock up torque converter in the 1930s. They put into production in 1949. All Packard Ultramatic transmissions had this, from 1949 to 1956. Packard called it Direct Drive.

[@BroaderPerformance]

Wow I didn't think this concept went back that far. Great info. Thank you for sharing it. Packard was a cool car company. I wish they didn't go out of business.

[@v8packard]

@@BroaderPerformance me too!! Thanks for your videos, I enjoy what you do.

[@llewellynquay9463]

Thanks once again Jay. Really looking forward to an AOD "In-Depth" explanation!

[@BroaderPerformance]

Your welcome. I'm glad it helped.

[@DowntownPowerAndSound]

Thanks for sharing your knowledge and insights. I appreciate your calm, balanced delivery. Cheers!

[@BroaderPerformance]

I'm glad it helped.

[@B.G.1]

I appreciate the time it takes to produce your videos. Torque converts have always been a mystery to me. I think you gave a very good explanation on them, and I am looking forward to your video on the Ford AOD converters since I have 2 cars with them. (plus, my fleet of older FMX, air-cooled, etc. trans)

[@BroaderPerformance]

I'm glad it helped you. Thanks for watching.

[@mhardy216]

Great content as always! Appreciate you taking the time to make these videos

[@BroaderPerformance]

Sure, thanks for watching.

[@Adrenacyde]

Can't wait for the AOD edition! I'd really like to understand how to manipulate the Apply rate during low to mid throttle. I have a unit that has a overly aggressive "shift" in to O.D. during regular driving. Every other function/timing is spot on.

[@BroaderPerformance]

The feed holes in the separator plate are probably drilled too large.

[@Adrenacyde]

@@BroaderPerformance Does that effect the Apply pressure or Release at all?

[@petar443]

Yes. Its like a metering orifice. A smaller hole keep gradual pressure buildup and smoother operation. One of the many methods to control the smoothness of apply and exhaust of fluid in older transmissions. Other methods are check valves and shuttering check balls and accumulators. Newer transmission use PWM low ohm solenoids for direct control.

[@Adrenacyde]

@@petar443 Thank you for this. I'm going to try peening the hole closed and try some smaller sizes. Again, trans is fantastic otherwise.

[@kgindustries2937]

Great job explaining this my dude. I appreciate all your Intel.

[@BroaderPerformance]

I'm glad it helped. Thanks for watching.

[@vadimf2015]

👍best video so far found with explanation! Thanks!

[@BroaderPerformance]

Im glad it helped. I appreciate the feedback.

[@edwardspaccarelli5944]

Thanks for the tutorial Jay.

[@thisisyourcaptainspeaking2259]

Good explanation, very clear and easily understood. I see this converter has a drain plug.

[@BroaderPerformance]

Thank you I'm glad it made sense.

[@GearheadBryan]

I’d love to know more about where the oil goes after applying pressure in the clutch. I have 4r70w that is pouring oil from the converter seal in 3rd and 4th gear. Does not leak in 1st or 2nd. Transmission has about 20 miles on it from a rebuilder. Appreciate the informative videos

[@BroaderPerformance]

The oil should just go through the lube circuit. Thats really odd it only does it in 3rd and 4th. If you can lock out the converter lock up with the controller and see if it still leaks that may help narrow it down.

[@jenniferpoh9998]

Borg Warner DG SERIES had a lock up arrangement , this trans was fitted to late 50’s jags etc

[@BroaderPerformance]

Interesting. Thank you for sharing this information.

[@gregorymalchuk272]

The Packard Ultramatic also had a locking torque converter.

[@garywoods148]

I remember build C5's back in the 90's. We always sent them out with the "dummy" converter may have been called a "Test Torque"? Chrysler has a similar design on the TF6/TF8 they didn't work well either.

[@BroaderPerformance]

Good info. Thanks for sharing it.

[@templetempest1730]

Good video!

[@BroaderPerformance]

Thanks for supporting the channel.

[@minigpracing3068]

Another channel I watch just put a lock up in his race car and explained a little about how it functions. He's controlling it with an external valve and programming it into the computer. How does a 2000 to 3000 horsepower lock up differ from the ones you've shown? Just more clutch plates and higher differential pressures? Edit: ask your viewer to check and make sure they are still subscribed... I'm almost positive I subbed a while ago, and just noticed that I was no longer subbed.

[@BroaderPerformance]

I'm not sure. I would think at those power levels most people would use a lenco or something similar. My customers are typically 1500 hp or less.

[@Tranibob]

Good video. Just FYI Turban 👳‍♂️ is spelled with an a. 😅

[@treyrags]

Something you wear on your head 😂😂😂

[@beecj0]

.

[@Druze_Tito]

This guy talks 20% slower than he should.

[@BroaderPerformance]

I'm trying to teach people something not running an auction or doing an infomercial.