Circuit ? 2-3 flair

[Lee Thompson]

Me of little mind wants to know if the servo travel getting larger (going from .070 to .140) will cause a 2-3 flair.
I had my direct clearance @ .035 and the servo travel @ .070.
Started to develop a 2-3 flair. Upon inspection I found that the directs had opened to .045 (not a sign of black on any frictions-still the Alto red). I got that back to .034 by changing a Kolene .077 to a .088.
Thought of this after reinstalling trans --maybe the lug on the Alto wide band had pushed in to allow for the pin to move farther. Did not remove band as it was perfect. I know that some of the Alto wide bands had a piece of steel welded in to eliminate this. I think this band is a later one that they redesigned but there is still a small gap.
I believe the same shot of oil that knocks the band off also applys the directs.
If so I can see where this could mess up the critical timing. Thanks

 

[77 cruiser]

I'd say yes because you are having to move it that extra .07 before you would get the full apply pressure to the directs. Especially when you are on the edge, as it sounds like you are.

 

[Lee Thompson]

Edge

What do you mean by "on the edge"?

 

[jakeshoe]

Lee,
I agree with Jim,
The servo is the accumulator for 3rd, and it must complete it's travel before the directs can completely apply.
It is kicked off by 3rd gear oil, and the larger the area, and further it has to travel, the more fluid it takes to make it happen.

shim the pin away from the servo using a washer of the correct thickness.

 

[77 cruiser]

What do you mean by "on the edge"?

Not in a bad way just about your directs lasting only 25 run on the directs any little extra clearance would cause a flair.

 

[chris718]

at the speed at which this 0ccurs and the rate of travel being discussed i dont think there is a human being alive that could detect the difference at wide open throttle.dual feed is the answer and if doesnt work something else is wrong.deleting the 3/2 control valve from the valve body and cross drilling the 3rd oil into the acc passage bypassing the center of the circuit is even better.new tech recently developed and tested over a 6 month period