what diameter are stall converters
02-27-2005, 08:37 PM
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what diameter are stall converters how do you tell if a converter is a stall by looking at it? i was told that a stall is smaller than the stock converter, is this true? the stock one i have is unpainted but the one i took out an compaired it to is the exact same size but is black, are stalls a certain diameter vs the factory converter
02-27-2005, 09:03 PM
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my tci verter is much smaller (diameter) than the stocker) not sure on the size though, but definetly smaller and a little lighter. maybe 1-2" smaller diameter.
pm kevin windstead from tci/- he probably knows actual sizes right off the top of his head..im sure yank/vigi converters are similar if not the same size as the tci.
btw tci is black, stock has the mounting holes (for the tc/flexplate bolts) integrated into the verter, tci has a big "ring" welded to the back of the verter with bolt flanges/holes to mount it to the flexplate. that woudl be the easiest way to tell.
pm kevin windstead from tci/- he probably knows actual sizes right off the top of his head..im sure yank/vigi converters are similar if not the same size as the tci.
btw tci is black, stock has the mounting holes (for the tc/flexplate bolts) integrated into the verter, tci has a big "ring" welded to the back of the verter with bolt flanges/holes to mount it to the flexplate. that woudl be the easiest way to tell.
02-27-2005, 10:36 PM
#6
First off, call them Torque Converters or "TC". "Stalls" are the partitions that provide privacy from the person taking in a dump in the next toilet over.
Torque converters are fluid couplings that get tighter as centrifugal force increases. RPM increases centrifugal force. The more difference there is between the input RPM and the output RPM the more the torque will be multiplied up to a factor known as the STR Ratio.
The stall-speed (adjective, NOT noun) of a torque converter is the RPM the engine can get to with the wheels locked by the brakes and the throttle wide open. It is this point where the fluid coupling is stronger than what engine torque can overcome. The RPM this happens at is called the "Stall-Speed".
Converters that have a high stall speed are generally better at multiplying torque, but construction and diameter play a roll in that too. Smaller diameter torque converters can provide higher stall speeds at higher efficiencies (STR Ratios) than modified stock-diameter torque converters can. Higher STR ratios translate to less power wasted as heat and therefore cooler fluid temperatures for the same amount of work.
On the left is the stock 13" converter for my 4L80-E. It has a stall speed of about 1900RPM on this motor. On the right is a 10.5" ProTorque converter I used with the 4L60-E. It had a stall speed on the same motor of about 2900RPM.
The 10.5" one was a whole lot more fun to launch.
Hope this helps.
Torque converters are fluid couplings that get tighter as centrifugal force increases. RPM increases centrifugal force. The more difference there is between the input RPM and the output RPM the more the torque will be multiplied up to a factor known as the STR Ratio.
The stall-speed (adjective, NOT noun) of a torque converter is the RPM the engine can get to with the wheels locked by the brakes and the throttle wide open. It is this point where the fluid coupling is stronger than what engine torque can overcome. The RPM this happens at is called the "Stall-Speed".
Converters that have a high stall speed are generally better at multiplying torque, but construction and diameter play a roll in that too. Smaller diameter torque converters can provide higher stall speeds at higher efficiencies (STR Ratios) than modified stock-diameter torque converters can. Higher STR ratios translate to less power wasted as heat and therefore cooler fluid temperatures for the same amount of work.
On the left is the stock 13" converter for my 4L80-E. It has a stall speed of about 1900RPM on this motor. On the right is a 10.5" ProTorque converter I used with the 4L60-E. It had a stall speed on the same motor of about 2900RPM.
The 10.5" one was a whole lot more fun to launch.
Hope this helps.
02-28-2005, 12:47 PM
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Originally Posted by James B.
First off, call them Torque Converters or "TC". "Stalls" are the partitions that provide privacy from the person taking in a dump in the next toilet over.
Torque converters are fluid couplings that get tighter as centrifugal force increases. RPM increases centrifugal force. The more difference there is between the input RPM and the output RPM the more the torque will be multiplied up to a factor known as the STR Ratio.
The stall-speed (adjective, NOT noun) of a torque converter is the RPM the engine can get to with the wheels locked by the brakes and the throttle wide open. It is this point where the fluid coupling is stronger than what engine torque can overcome. The RPM this happens at is called the "Stall-Speed".
Converters that have a high stall speed are generally better at multiplying torque, but construction and diameter play a roll in that too. Smaller diameter torque converters can provide higher stall speeds at higher efficiencies (STR Ratios) than modified stock-diameter torque converters can. Higher STR ratios translate to less power wasted as heat and therefore cooler fluid temperatures for the same amount of work.
On the left is the stock 13" converter for my 4L80-E. It has a stall speed of about 1900RPM on this motor. On the right is a 10.5" ProTorque converter I used with the 4L60-E. It had a stall speed on the same motor of about 2900RPM.
The 10.5" one was a whole lot more fun to launch.
Hope this helps.
Torque converters are fluid couplings that get tighter as centrifugal force increases. RPM increases centrifugal force. The more difference there is between the input RPM and the output RPM the more the torque will be multiplied up to a factor known as the STR Ratio.
The stall-speed (adjective, NOT noun) of a torque converter is the RPM the engine can get to with the wheels locked by the brakes and the throttle wide open. It is this point where the fluid coupling is stronger than what engine torque can overcome. The RPM this happens at is called the "Stall-Speed".
Converters that have a high stall speed are generally better at multiplying torque, but construction and diameter play a roll in that too. Smaller diameter torque converters can provide higher stall speeds at higher efficiencies (STR Ratios) than modified stock-diameter torque converters can. Higher STR ratios translate to less power wasted as heat and therefore cooler fluid temperatures for the same amount of work.
On the left is the stock 13" converter for my 4L80-E. It has a stall speed of about 1900RPM on this motor. On the right is a 10.5" ProTorque converter I used with the 4L60-E. It had a stall speed on the same motor of about 2900RPM.
The 10.5" one was a whole lot more fun to launch.
Hope this helps.
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03-01-2005, 09:30 AM
#9
The size of the converter has nothing to do with the stall speed. Most higher stalled TC are smaller in diameter than OEs, but some OE are also smaller. The OE TC on an LS1 is 12", but on a V6 it is more like 10". More serious TCs are 9" or even 8" (typically race converters). Larger TCs usually have very low stall speeds, upto 3000. 10" units can have stall speeds from 2000 upto 4500. 9" units typically have stall speeds starting at 3000 and going up past the 5000 level. 8" units will rarely start out at 3500, typically at 4000 and go up from there.
