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Author
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Topic: Torque Converter
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1SLWGT
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Member # 926
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posted
 
 
Hey I was wondering what would the every day driving be like with one of these? Im totally lost on how they work.
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"Why do they call it taking a dump when your leaving a dump?"
Posts: 32 | From: Walnut Creek | Registered: Feb 2002
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VNMKING
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Member # 480
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posted
The desired stall speed is controled internally by a series of angled fans. The higher the stall the higher the flash speed. Flash speed being the RPM the tranny will fully engage or lockup. I've seen people run as high as a 4000 stall around town and it is still streetable. Remember if the tranny is slipping/not locked up at all it going to get hot. The best street/strip stall in my eyes is 3000. Great launching RPM and plenty streetable. In case you were wondering, yes the tranny still engages before this RPM just not fully. With a 3000 stall you'll probably leave the light at 1400-1700RPM. Keep in mind that every automactic needs a torque converter with a stall speed(stock 1400-1800) otherwise automatics would die at every stoplight. Hopefully this helped you understand.
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65’ Coupe
94’ Cobra
"VNMKING"
Posts: 1000 | From: Roseville, CA | Registered: Oct 2001
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PunkINa5.SLOW
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Member # 10
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posted
Also remember that the best stall speed for your motor will depend on where peak torque/hp are made and weight of car gearing etc etc.
TONS of variables way too many to say that X amount of stall is too much or too little on the street.
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OUTTA THA DRAMA
R.I.P. MIKE STARKEY MY BABY BROTHER
12/8/77-5/17/03
Posts: 2495 | From: MTZ | Registered: Sep 2000
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F8LPONY
NORCAL-LS1
Member # 11
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posted
Hehehe
Then you can throw in the variable that some companies call Stall Torque Ratio or STR. Converters can be designed with different pumps and efficiency ratings which can make a converter hit really hard off the line but lose efficeincy on the top end or vise versa. This is so people that run wimpy street tires can still run a high stall converter without killing the tires too bad, or people that run really sticky tires can hit so hard off the line it feels like God himself just kicked your back bumper!
I ran a 3500rpm stall in my Stang for a long time and it was perfect and I have run everything from a 3000-4400rpm stall in the T/A and for my application I would say 3500rpm was the best comprimise between street and track.
You also have to take a look at your gearing, if you run 2.73's a 3500 stall is going to feel lose, if you run 3.73's it is going to feel closer to stock.
Posts: 1292 | From: Sacramento, CA. | Registered: Aug 2000
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customN2O
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Member # 914
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posted
Give Emerald Torque Converters a call in Walnut Creek. Talk to Jim, the owner. They make a very nice converter, with almost any stall you would want, but still streetable. Unlike a B&M converter, that if its a 3000 stall, the damn car wont even move till 3000, an emerald is very streetable. I used to drive around with a 4800 stall, but could still idle through the intersection, and cruise on the freeway at 2500, but as soon as I would mash it, it would rise to 4800 and start pulling like crazy.
Another plus to the emerald, is they work best on Fords. Ford torque converters dont have a very high torque multiplier in their stator. The emerald converters use a stator with a 1.7 torque multiplier. This is about double what most are. That means more torque off the line to the rear tires. Easy upgrade. Most people with Fords that get one of their converters, cant believe the difference in their launch.
Like I said earlier, call Emerald and talk to Jim the owner. Tell him Zimmerman referred you, and he will give you all the info, and schooling you may want or need. Very good converters!
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[img]http://www.zimmermanmotorsports.com/zimban2.gif[/img]
Posts: 222 | From: Bay Area | Registered: Feb 2002
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1SLWGT
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Member # 926
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posted
Cool guys, Thanks for the info.
Posts: 32 | From: Walnut Creek | Registered: Feb 2002
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