by TRENDZ » Sat Jul 25, 2009 2:49 pm
I just went through this myself. It's just that tight, no secret other than a lot of torque. I removed my outlet fitting with intentions of welding on an A/N fitting. I found after removing it, that there is a check valve that is "sort of" part of that fitting. I didn't want to wreck the valve with heat, so I decided to remove the check valve. I put the fitting in a vice, used a flat faced punch, and tapped the valve out of the fitting. I also drilled the flow holes in the check valve to increase its flow.
Anyway... I decided to just tap the pump fitting to 3/8" pipe instead of welding it, and it worked out fine.
91 d350 1/2" supply lines, 2nd gen lift pump, regulator, 366, screwed, homebrewed afc pin, linkage mods, ported head, ported ex manifold, 351ve electrically controlled, 3" boost tubes, 2nd gen I/C, 4" ex, goerand