My flywheel had a big crack in it and when I opend up my t.c. it was all in peices (which is why my tranny blew) I bought performance steeles and clutches a corvette sirvo and corvette valve body Orings and soaked them in tranny fluid 4 days gutted my 700r4 (reverse engineering it) and rebuilt it from memory. Worked from the get go. except the sirvo kept popping the keeper ring out (had to find and put it in by hand) and reset the kickdown cable wasnt hard but I still dont know how I did it :)
I just replaced my clutch a month ago. Just now I was talking to family (christmas dinner) and my uncle brought up torque converters. I had no clue how an automatic transmission worked. Thanks the info :D
@2loko4you No idea, it would depend on your engine size which would determine your torque converter size, but you could probably find this info in the cars manual. Never dealt with automatic transmissions; hope I never have to. Sorry I couldn't be more help.
You'll only have situation where the engine spins faster than the converter output while accelerating. beginning at 3rd gear modern torque converters automatically lock once the input/output speed matches.
Amazing explanation. Good work man. As a side note, the torque converter is connected to a flexplate (not a flywheel). A flywheel is a large and heavy plate attached to the crankshaft of standard vehicles to dampen engine vibrations and add momentum to the rotation of the crankshaft.
@Monstar001 Actually flexplates (as far as I know) are just the term for flywheels for automatic cars. The difference is they're typically thinner since the torque converter also has mass which is essentially carrying the same responsibility of a flywheel. The purpose of the flywheel is to even out the torque. Without it, the power sent to the wheels would be pulsating, instead the inertia of the flywheel keeps the power to the wheels smooth.
Great explanation. My transmission has a feature called Lock up.. which i've interpreted as it doesn't let any power go to waste through the TC when it's in overdrive? The tranny "locks up" in about 50 mph, or something like that. Could that be right?
Doesn't this fluid wear out in the TC? Ive heard that it's not replaced when just regular ATF change is performed... it stays in there, somehow? That sounds a bit odd.. the fluid would wear out quick. Wouldn't it?
@Dotchetter Yes, modern torque converters lock up at higher speeds so now power is lost through the inefficient design of a torque converter. Don't see any reason why the fluid couldn't last a long time.
@Dotchetter Well since the systems are connected some of it will drain. But if the engine's not running then the torque converter's not spinning, so the fluid on the bottom half could easily remain in. But it circulates with the rest of it so I guess it's no big deal.
Excellent videos, I have subscribed. Do you know some of the newer cars (370Z) are able to essentially lock the torque convertor during hard acceleration even if not at a dead stop?
@my2004Ze33 Thanks for subscribing! Didn't know about the Z's torque converter. Personally I think I'd have to go manual just to have the control. Plus the Z comes with the awesome synchro-rev match.
@EngineeringExplained I have the 7 speed automatic version with paddle shifters and it is a tick faster and geared a little tighter than the manual. The control is actually pretty good compared to a manual (my previous car was a 350Z MT) because of this torque convertor locking feature that Nissan claims.
Thanks for the best explanation. This helps me a lots!!!
space127 2 days ago
Thanks ,it helped me a lot while preparing for my seminar.
kroshan70 4 days ago
Great Video! I know more now then I did before watching it. Thank you
ehiggins1016 6 days ago
Do these work like centrifugal clutches? Apart from its used liquid rather then friction?
Slaterking2010 6 days ago
Very nicely put with a simple schematics, I've learned better than at several 3D animations (those just helped a little). Thanks!
aerotranslados 1 week ago
made complete sense. This is why I will never drive an automatic. Manual wins every time!
joecooper18 1 week ago
Very good and basic explanation!
Rmerchant3 2 weeks ago
finally someone who can explain how it works. thanks
tommygunn8888 2 weeks ago
My flywheel had a big crack in it and when I opend up my t.c. it was all in peices (which is why my tranny blew) I bought performance steeles and clutches a corvette sirvo and corvette valve body Orings and soaked them in tranny fluid 4 days gutted my 700r4 (reverse engineering it) and rebuilt it from memory. Worked from the get go. except the sirvo kept popping the keeper ring out (had to find and put it in by hand) and reset the kickdown cable wasnt hard but I still dont know how I did it :)
MrTex1987 3 weeks ago
Very well done!
dboorn1 1 month ago
I just replaced my clutch a month ago. Just now I was talking to family (christmas dinner) and my uncle brought up torque converters. I had no clue how an automatic transmission worked. Thanks the info :D
JamesHaskin 2 months ago
@JamesHaskin Glad I could help! Merry Christmas!
EngineeringExplained 2 months ago
how much transmission fluid gose into torque coverter after you take it out
2loko4you 2 months ago
@2loko4you No idea, it would depend on your engine size which would determine your torque converter size, but you could probably find this info in the cars manual. Never dealt with automatic transmissions; hope I never have to. Sorry I couldn't be more help.
EngineeringExplained 2 months ago
You'll only have situation where the engine spins faster than the converter output while accelerating. beginning at 3rd gear modern torque converters automatically lock once the input/output speed matches.
mickblock 2 months ago
@mickblock Correct you are!
EngineeringExplained 2 months ago
Amazing explanation. Good work man. As a side note, the torque converter is connected to a flexplate (not a flywheel). A flywheel is a large and heavy plate attached to the crankshaft of standard vehicles to dampen engine vibrations and add momentum to the rotation of the crankshaft.
Monstar001 2 months ago
@Monstar001 Actually flexplates (as far as I know) are just the term for flywheels for automatic cars. The difference is they're typically thinner since the torque converter also has mass which is essentially carrying the same responsibility of a flywheel. The purpose of the flywheel is to even out the torque. Without it, the power sent to the wheels would be pulsating, instead the inertia of the flywheel keeps the power to the wheels smooth.
EngineeringExplained 2 months ago 3
Great explanation. My transmission has a feature called Lock up.. which i've interpreted as it doesn't let any power go to waste through the TC when it's in overdrive? The tranny "locks up" in about 50 mph, or something like that. Could that be right?
Doesn't this fluid wear out in the TC? Ive heard that it's not replaced when just regular ATF change is performed... it stays in there, somehow? That sounds a bit odd.. the fluid would wear out quick. Wouldn't it?
Dotchetter 2 months ago
@Dotchetter Yes, modern torque converters lock up at higher speeds so now power is lost through the inefficient design of a torque converter. Don't see any reason why the fluid couldn't last a long time.
EngineeringExplained 2 months ago
@EngineeringExplained Well just a thought since regular atf is changed on regular basis, why not the fluid in the TC?
Dotchetter 2 months ago
@Dotchetter Well since the systems are connected some of it will drain. But if the engine's not running then the torque converter's not spinning, so the fluid on the bottom half could easily remain in. But it circulates with the rest of it so I guess it's no big deal.
EngineeringExplained 2 months ago
@EngineeringExplained oh, okay its circulation. I thought it was sealed from factory. That's why i was so curious. thanks for taking the time!
Dotchetter 2 months ago
Excellent videos, I have subscribed. Do you know some of the newer cars (370Z) are able to essentially lock the torque convertor during hard acceleration even if not at a dead stop?
my2004Ze33 2 months ago
@my2004Ze33 Thanks for subscribing! Didn't know about the Z's torque converter. Personally I think I'd have to go manual just to have the control. Plus the Z comes with the awesome synchro-rev match.
EngineeringExplained 2 months ago
@EngineeringExplained I have the 7 speed automatic version with paddle shifters and it is a tick faster and geared a little tighter than the manual. The control is actually pretty good compared to a manual (my previous car was a 350Z MT) because of this torque convertor locking feature that Nissan claims.
my2004Ze33 2 months ago
Thanks for your videos. it's really helping me in my assignment.
MAAlharbi 4 months ago
God I wish I had found these videos a couple years ago back when I started getting into cars... Thanks for making these!
thekkl 5 months ago