Quote:
Originally Posted by crazychevyc10
I was wondering if someone can explain how a torque converter works? If I'm shopping for one what should I be looking for? How does the stall benefit me?
Thanks!
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Quote:
Originally Posted by TBONE1964
http://en.wikipedia.org/wiki/Torque_converter
This will explain everything. You will want to look for a company that has a good reputation building them to last without failure such as B&M or Coan.
If you contact one of the major camshaft manufactures, they can tell you which stall speed is best for your combination. It will be based on your vehicle weight, rear end gear ratio, tire size, cam shaft as well as horse power and torque of your engine. Some will have opinions based on their own experience.
Hope this helps
Tom
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I didn't read the wiki link but let me explain it to you the way it was first explained to me.
Think of two fans. One plugged in and power on, blowing at the 2nd one. The 2nd one turns from the air forced across it from the first one.
In your car/truck, the first one is coupled to the crank shaft on your engine. The second one is coupled to the drive shaft. Instead of air between the two "fans" you have hydraulic fluid - or transmission fluid.
Manufacturers can design them such that they slip - don't cause the drive shaft to turn - at a higher speed.
For racing guys you can take an engine that produces more torque at a higher rpm, put a high stall speed torque converter in it, buzz it up higher at the line, then take off in your engine's power band.
If you want better fuel economy, you want the lowest stall speed you can live with.
Also all the energy has to go some place. In high stall speed converters that energy is converted to heat in the transmission fluid. If you're running around town in a vehicle with a high stall speed you need all kinds of extra transmission cooling to keep that heat from destroying your tranny.