Rebuild Torque Converter

The 1UZFE EGR Delete Kit is available for sale here.

Lextreme II

Just call me "Lex"
Messages
12,043
Location
City of Halos
The Lextreme Performance Torque Converter is reninforced internally. We tig weld all fins to the wall of the TC. Tranny will break before TC break.

More info here...

csasp%20235.jpg


OUR GUARANTEE:
1. If you break it, send it back and get a replacement
2. If you break it again, send it back and we will refund you the full amount


* Our TC is many times stronger than stock. Our fins are tig weld to the wall and it unbreakable.

Lexus early models performance torque converter: (1UZFE & 2JZGE)
Price: $515/shipped
(includes $175 core fee refundable within 30 days)

Tundra performance torque converter: (2UZFE)
Price: $656/shipped
(includes $100 core fee is refundable within 30 days)

Lexus Late models performance torque converter: (VVTi 1UZFE, 3UZFE & 2JZGE)
Price: $615
(includes $175 core fee refundable within 30 days)
 
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deankdx

Member
Messages
489
Location
geelong, Victoria, Australia
3.45 lsd and high stall converter

i was wondering if there would be any associated issues with using the high stall mentioned 2800rpm stall? and running 3.45 diff which is around 2000rpm at 100kmh? i always thought that the torque converter should be locked up at cruising speed does this lock up work as normal hence still enabling cruise at 2000rpm?

i like the way the car behaves as is, its not a drag car and needs to drive normal when required, i like the idea of having a quick car but reliability and reasonable economy is more important.
any explanations or experiences are appreciated
 

Lsportline43

New Member
Messages
2
Location
Connecticut
Jasoneo5 said:
What is " Stall Speed"? What will I feel/See different? What is my current stall speed on my stock converter?

Lastly, how many hours will it take to install?

Thanks so much!

-Jason Elcan

Stall speed is in RPM(Revolution per minute) values. The higher the stall speed, in RPM, means that the car will begin to move at a higher RPM value. For example, a 2,800 RPM stall speed will have the car begin to move at 2,800 RPM. This increases torque created by the torque converter. This is because the impeller in the Torque Converter is revolving faster than the turbine(connected to transmission input shaft).
 

Lsportline43

New Member
Messages
2
Location
Connecticut
deankdx said:
i was wondering if there would be any associated issues with using the high stall mentioned 2800rpm stall? and running 3.45 diff which is around 2000rpm at 100kmh? i always thought that the torque converter should be locked up at cruising speed does this lock up work as normal hence still enabling cruise at 2000rpm?

i like the way the car behaves as is, its not a drag car and needs to drive normal when required, i like the idea of having a quick car but reliability and reasonable economy is more important.
any explanations or experiences are appreciated

Are you asking if Torque Converter locks up? I am not sure about this specific torque converter, but I know there are torque converters that do lock up. There's always slippage in the torque converter and locking the couplings increase fuel economy. Most don't allow lock up until second or third gears because this is when the Impeller and Turbine are at the state where they are both revolving at near identical speeds. Locking them up rids the small amount of slippage that occurs.

By the way I heard about a Mercedes-Benz (i think it's the CLS-Class) that has a torque converter that can lock in first gear. Anyone know what I am talking about?
 

fugly

New Member
Messages
311
Location
CAIRNS,QUEENSLAND,AUSTRALIA
Dean kdx, you don't have to get your stall speed raised to 2800, in your case 1800rpm may be better.

In regard's to high stall converters affecting the life of a gearbox.
High stall converters do create a lot more heat, if you don't also upgrade your trans cooler suitablely, & change the oil more often, you will definitely shorten the life of your auto.

An old school converter won't lock up completly, different companies biuld in different % of slip.
Most modern converters have electronicly controlled lock up converters, i don't know if the stall speed of these converters can be raised much & still retain the lock up feature.
 

deankdx

Member
Messages
489
Location
geelong, Victoria, Australia
fugly said:
Dean kdx, you don't have to get your stall speed raised to 2800, in your case 1800rpm may be better.

Most modern converters have electronicly controlled lock up converters, i don't know if the stall speed of these converters can be raised much & still retain the lock up feature.
the stall in my trans(from a crown half cut) seems to have a bit of a high stall at least higher than a falcon auto, what is the standard stall speed of a crown, my tacho is not hooked up yet, but i'd be interested to know if its higher than 1500 or not.
thie reason i asked about the lock up is cos i don't think you could have a lock up 2800 stall that sits on 2000rpm at 100kmh?
 
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fugly

New Member
Messages
311
Location
CAIRNS,QUEENSLAND,AUSTRALIA
I'm not sure what the standard stall speed is, i will try to remember to try my box tommorrow(it's also a crown box) i'll let you know,
Apparently you can run ahigher stall rpm than your cruise rpm, but as soon as you put it under load (eg,a hill)it will start to flare up. Proberly not a good thing.
 

400ZED

New Member
Messages
369
Location
Queensland
Put your cqar in Low pull on the hand brake apply the foot brake and tramp the throttle if it does not spinn the rears the tacho will indicate the stall speed. ( the speed at which the torque converter can spin when the output is stationary.) not recomended to be done for more than 3 seconds as you are generating a lot of heat.
 

400ZED

New Member
Messages
369
Location
Queensland
Carefull if brakes lose grip you might find yourself going some where bad think about this before trying it. i have hear of a written off 800hp falcon and shed from just such a test.
 

deankdx

Member
Messages
489
Location
geelong, Victoria, Australia
400ZED said:
Carefull if brakes lose grip you might find yourself going some where bad think about this before trying it. i have hear of a written off 800hp falcon and shed from just such a test.

was that the black supercharged XA coupe? that plowed a silvia?
i have no tacho yet or i would test it, not far away now though,
 

fugly

New Member
Messages
311
Location
CAIRNS,QUEENSLAND,AUSTRALIA
I tried that today & got 1500rpm as started to turn the tyres, then got thinking about that test, if i had realy good disc brakes on the back the rpm would have been higher, so i thought if i just stab the throttle(no brakes) till the tyres just turned, got between 1200-1500rpm. This test would be affected by how much traction your getting.
conclusion, i don't now if either of these test's will give a terribly accurate reading.
Any auto specialist out there in lextreme land???
 

deankdx

Member
Messages
489
Location
geelong, Victoria, Australia
fugly said:
I tried that today & got 1500rpm as started to turn the tyres,
Any auto specialist out there in lextreme land???
i'm no expert but 1500 would be the stall speed, if it did the same at 2800 it would be 2800 stall, or whatever else.
i've driven a few cars with high stalls, my brother had a 2500high stall on a 351 and it made a huge difference to take off, i also drove a 202 Torana with a 4000 stall(what a pig) it needed it cos it had a massive cam with no power down low at all


for me with no tacho at the moment, mine sounds to be higher than 1500 but then again, i'm not used to the way these motors sound, it sounds as if its idling at near 1000rpm but probably isn't
 

fugly

New Member
Messages
311
Location
CAIRNS,QUEENSLAND,AUSTRALIA
If it's a standard converter, i don't think the stall would be above 1500 rpm, i would even be surprised if the stall speed was 1500rpm from new, my box isn't in very good condition.
 
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Lextreme

Administrator
Staff member
Messages
442
Can anyone confirm what stock stall is? Have a customer asking.

David (the original Lextreme) said it's 2200-2400. Can anyone confirm?
 


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