Torque Converter Chatter questions
#17
10-22-2007, 10:40 PM
The bottle shown in the photo is the modifier used in limited slip rears and comes in the rebuild kit..
I have a FMS catalog that shows the photo of it. Same bottle same label.
Don't know if this is used in a transmission.
Rear fluid is not anywhere's near the same as transmission fluid.
There is another friction modifier in a bottle, same shape but different label and is still for limited slip differencials from FMS..
Better be sure before you put this bottle in a transmission.
It ''promotes'' a controlled amount of slip on clutch surfaces to prevent chatter going around corners for those whom it bothers.
The drag racers who use limited slip rears often 'don't' put it in to increase lockup of clutch stacks by the untreated fluid.
I have a FMS catalog that shows the photo of it. Same bottle same label.
Don't know if this is used in a transmission.
Rear fluid is not anywhere's near the same as transmission fluid.
There is another friction modifier in a bottle, same shape but different label and is still for limited slip differencials from FMS..
Better be sure before you put this bottle in a transmission.
It ''promotes'' a controlled amount of slip on clutch surfaces to prevent chatter going around corners for those whom it bothers.
The drag racers who use limited slip rears often 'don't' put it in to increase lockup of clutch stacks by the untreated fluid.
Last edited by Bluegrass 7; 10-22-2007 at 10:44 PM.
#18
10-22-2007, 11:10 PM
There are friction modifiers used for transmissions but It dosn't promote slipping for obvious reasons. That is what your trying to fix.
Think surface conditions!
The clutch material embeds worn off, over heated material out of the fluid such that grip at the beginning of lockup creates the most surface heat and again when unlocking.
If grip is marginal it goes into a cycle of lock/unlock called chatter.
The proper additive alters the clutch material surface to stop that action.
In a trans that has a tendency to shed clutch/band material, loads up the fluid that after awhile comes back to embed in the same surfaces it came from and close up the surface pores creating a greater slick, polished and glazed surface that no longer can reliably hold the torque applied under the servo pressure applied.
Think surface conditions!
The clutch material embeds worn off, over heated material out of the fluid such that grip at the beginning of lockup creates the most surface heat and again when unlocking.
If grip is marginal it goes into a cycle of lock/unlock called chatter.
The proper additive alters the clutch material surface to stop that action.
In a trans that has a tendency to shed clutch/band material, loads up the fluid that after awhile comes back to embed in the same surfaces it came from and close up the surface pores creating a greater slick, polished and glazed surface that no longer can reliably hold the torque applied under the servo pressure applied.
#19
10-23-2007, 02:21 AM
Originally Posted by Bluegrass 7
The bottle shown in the photo is the modifier used in limited slip rears and comes in the rebuild kit..
I have a FMS catalog that shows the photo of it. Same bottle same label.
Don't know if this is used in a transmission.
Rear fluid is not anywhere's near the same as transmission fluid.
There is another friction modifier in a bottle, same shape but different label and is still for limited slip differencials from FMS..
Better be sure before you put this bottle in a transmission.
It ''promotes'' a controlled amount of slip on clutch surfaces to prevent chatter going around corners for those whom it bothers.
The drag racers who use limited slip rears often 'don't' put it in to increase lockup of clutch stacks by the untreated fluid.
I have a FMS catalog that shows the photo of it. Same bottle same label.
Don't know if this is used in a transmission.
Rear fluid is not anywhere's near the same as transmission fluid.
There is another friction modifier in a bottle, same shape but different label and is still for limited slip differencials from FMS..
Better be sure before you put this bottle in a transmission.
It ''promotes'' a controlled amount of slip on clutch surfaces to prevent chatter going around corners for those whom it bothers.
The drag racers who use limited slip rears often 'don't' put it in to increase lockup of clutch stacks by the untreated fluid.
#20
10-23-2007, 02:20 PM
#22
06-20-2009, 12:20 AM
#23
06-23-2009, 08:42 AM
Postmaster
Ever thought about this?
The filter is not that important on a trans that has been treated reasonably.
It is just enough of a screen to keep larger debre from entering the pump, otherwise it dosn't do much actual filtering, same as an oil pump pickup screen. You don't change them at oil change time.
All hard heavey debre lays on the bottom of the pan. If you have very much large debre, the trans has a problem and is about to give up soon, anyways.
This is why the dealers and other shops now do flushing on transmissions that have no obvious problems besides the late designs on some vehichles don't even have a normal fill but is done thru a plug under pressure.
How about that!
The filter is not that important on a trans that has been treated reasonably.
It is just enough of a screen to keep larger debre from entering the pump, otherwise it dosn't do much actual filtering, same as an oil pump pickup screen. You don't change them at oil change time.
All hard heavey debre lays on the bottom of the pan. If you have very much large debre, the trans has a problem and is about to give up soon, anyways.
This is why the dealers and other shops now do flushing on transmissions that have no obvious problems besides the late designs on some vehichles don't even have a normal fill but is done thru a plug under pressure.
How about that!
JL
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