Warning to would be Walbro installers...
Just so everyone knows, a couple Walbros have been installed on 2nd gen VP44 trucks.
They appear to be working well. In the process of doing this, we learned a few things, namely that the stock stock return line is very restrictive. So restrictive, in fact, that all one needs to do is install a bypass line (without a regulator) and you should see 17 PSI at the VP44 at idle.
In order to install a regulator, a second, low restriction return line must be installed, along with a high flow regulator.
You can read about the installations here:
http://www.cumminsforum.com/forum/forumdisplay.php?f=18
They appear to be working well. In the process of doing this, we learned a few things, namely that the stock stock return line is very restrictive. So restrictive, in fact, that all one needs to do is install a bypass line (without a regulator) and you should see 17 PSI at the VP44 at idle.
In order to install a regulator, a second, low restriction return line must be installed, along with a high flow regulator.
You can read about the installations here:
http://www.cumminsforum.com/forum/forumdisplay.php?f=18









