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ss3011 · 06-25-2018, 04:36 PM

The K factor is specific for each converter . We had a converter dyno that we would lock the output shaft (stall) and then input a specific torque , then we would measure the rpm . The formula K = R / sqrt T was developed from those tests . As long as the converter is not cavitating that formula will hold true .

If you have a transbrake and a dyno torque curve on your engine , you can determine the K factor of your converter . You would just engage the transbrake , go WOT (no two step) and measure the rpm your engine goes to . Then you can look up on your torque curve what engine torque you achieved at that RPM . Plug the numbers into the formula , to determine the K factor . This is a great way to determine the relative difference in looseness between different converters .

06-25-2018, 04:36 PM	#10
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 908 Likes: 70 Liked 238 Times in 113 Posts	Re: flash rpm question The K factor is specific for each converter . We had a converter dyno that we would lock the output shaft (stall) and then input a specific torque , then we would measure the rpm . The formula K = R / sqrt T was developed from those tests . As long as the converter is not cavitating that formula will hold true . If you have a transbrake and a dyno torque curve on your engine , you can determine the K factor of your converter . You would just engage the transbrake , go WOT (no two step) and measure the rpm your engine goes to . Then you can look up on your torque curve what engine torque you achieved at that RPM . Plug the numbers into the formula , to determine the K factor . This is a great way to determine the relative difference in looseness between different converters .