How to check line pressure

[altered7151]

I just got my mvb and remember hearing stories that the line pressure has been set too low on some off the units and needs to be turned up. Is this still true and how do I check the pressure?

[BadAndy]

Quote:

Originally posted by altered7151 I just got my mvb and remember hearing stories that the line pressure has been set too low on some off the units and needs to be turned up. Is this still true and how do I check the pressure?

The line pressure has been set too low on "some" units but I feel like "all" is more appropriate. I installed mine straight out of the box and it's shift quality was exactly like stock. You really have two options:

1. Send MVB to Gary Donovan "Relentless Performance" for modification (get in touch w/him and he will explain why) in short the MVB's were designed in the carbed 2.2 era.....things need to be "tweaked" to bring them up to turbo spec. I have done this to mine......best mod per dollar spent besides the G-Valve!

2. Adjust the line pressure yourself before install....which is done by turning the line pressure adjustment counter clockwise. You will still not be able to obtain the desired line pressure when fully adjusted out.....I tried!......it was a improvement mind you, but still not what I wanted or expected.

There is also a mod to make your tranny externally adjustable which I have done......it's nice to have but thus far I have found it not neccessary with the Relentless modded MVB as mine seems perfect.

Hope this helps

[altered7151]

How much was the "tweaking" and what was the turn-around time on it? Sounds like the way to go, but I'm so ready to get this thing on the track that I might just throw it in there for now and pull it out and send it to Gary when I have a break. Gary- you readin this?

well for my own ignorance. how DO you check the line prease? is the cooler lines under preasure?
just T into that. and run it to a compresion tester..

[BadAndy]

Quote:

Originally posted by masterjr33-2 well for my own ignorance. how DO you check the line prease? is the cooler lines under preasure? just T into that. and run it to a compresion tester..

I'm not sure on this but I wouldn't think that the cooler lines are under the same pressure as the valve body passages as this just wouldn't make any sense. There are some tiny 1/16 plugs on the front of the tranny facing the core support......I believe the one in the center taps into a passage for pressure testing.....the problem is there isn't a 1/16 inch fitting to thread in to allow presssure testing, so something custom must be made.

ahh. well what about a oil preasure gauge? or even a screw in 1/8 inch fuel preasure guage..
or what is everyone else using?

[BadAndy]

Quote:

Originally posted by masterjr33-2 ahh. well what about a oil preasure gauge? or even a screw in 1/8 inch fuel preasure guage.. or what is everyone else using?

Actually I messed up...they are 1/16....very tiny

[gdonovan]

Quote:

Originally posted by BadAndy Actually I messed up...they are 1/16....very tiny

1/16 NPT, a PITA to find!

you check line pressure at the kickdown port while the car is in second gear. Do it on jacktands at 1500-2000 rpm so that the pump is at full output.

thanks gary. you still the man. you too andy.. i work at home deopt so i hope i can get some 1-1/16's....
i just got my FMRPVB installed and wanted to see what the line preasure was set at from turbo action.. (low im sure)