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Weird Pressure Readings with Manual Valve Body - Help?

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Warren

Member
Joined
Dec 6, 2006
Messages
32
Finally got around to reading the pressures on this danged 2004R. It has a 10 vane pump and as far as I know, nothing else has been done to the front pump. I'm running the TCI 386010 Reverse Pattern Manual Valve Body with an unknown (aquamarine colored) 9.5" NLU converter and NO TV Cable. Seem to have alot of slipping in reverse and Low is questionable on takeoff but drives the car ok. 2nd, D & OD seem to be just fine. Only 350 miles on the transmission and it's done this since the build using TCI's master kit.

TCI shows the correct pressures for using the MVB (read at 2000 RPM) as follows. I've put my readings (albeit at only 750 RPM) at the end. Quite a disparity showing. Any ideas?

Range..........Min..........Max..........Mine
P................90-110......90-110.......200
R..............200-300....200-300.......100
N................90-110......90-110.......150
Low.........190-230.....190-230.......150
2nd..........190-230.....190-230.......190
Drive.......190-230.....190-230.......180
OD..........190-230.....190-230.......180

I've ordered and received a .500 Boost Valve , HD Spring and the oversized Low/Reverse Boost Valve for the front pump but was wondering if I'm on the right track. Car ran 12.56 @107.99 in the quarter, just seems slow taking off in 1st. Any help would be greatly appreciated.

Warren
 
I'm not familiar with a TCI manual valvebody but how do they control the line pressure without a T.V. cable?
 
Not sure about Pr. on their Manual VB but they do have CPVB/ConstantPressureValveBodies as well. Their Manual VB may use the same method. The CPVB uses the TV cable for shift points only.
 
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