gunslinger
New member
- Joined
- Dec 5, 2014
- Messages
- 23
Friend of mine just rebuild his 48RE transmission. It has electrically controlled TV. After rebuild transmissions works perfectly, except 2 -> 3 shift flares badly. It feels like there's "neutral" between the gears.
On the rebuild he put in Sonnax 2nd Gear Super Hold Servo Kit. Band apply lever is stock 5.0 ratio. He also put in Transgo shift kit and Borg Warner governor pressure solenoid.
Yesterday he measured pressures on the transmission:
Should the accumulator pressure follow front servo pressure all the time, and should the governor pressure follow speed all the times? Is it possible that the super servo and stock lever are causing timing issue? Or is there anything else you might suspect wrong with this information?
On the rebuild he put in Sonnax 2nd Gear Super Hold Servo Kit. Band apply lever is stock 5.0 ratio. He also put in Transgo shift kit and Borg Warner governor pressure solenoid.
Yesterday he measured pressures on the transmission:
- Governor pressure seems to rise as it should until ~ 35 - 40 mph. From there, around 45 -50 mph it rockets to over 100 psi and and then stays there no matter how high speed rises.
- Front servo pressures seems OK to me. 75-80 psi at idle, 175-180 psi around 1600rpm and 205 - 210 psi at WOT.
- Accumulator port shows same pressure at idle, but significantly lower pressures from there on. If I remember correctly, it was around 100 psi at 1600rpm and around 170 psi at WOT.
Should the accumulator pressure follow front servo pressure all the time, and should the governor pressure follow speed all the times? Is it possible that the super servo and stock lever are causing timing issue? Or is there anything else you might suspect wrong with this information?