VRO

[THEFERMANATOR]

Originally Posted by spareparts

i tried to cap off the oil side of the pump on my 120 looper, but thefuel side started acting up, it would start clicking and leaking fuewl out of the oil flow sensor, rather than screw with it any more, i found an old 235 fuel pump adn taped the block pressure hole for a pipe nipple and installed it to replace the fuelpump/oil pump set up i had, if nothing else, it cleaned up that side of the engine.

This is a LOOPER NO NO!!! The looper engines don't produce the crankcase pressure that cross-flows do and they WILL lean out under WOT runs. The cross-flow pumps put out around 4 psi whereas the looper pumps(the VRO pumps) put out 6 psi. I tried this with my 140 looper one time just to see, and ANYTHING over 1/2 throttle dropped the fuel pressure below 2 psi. If it's been working for you, you are way beyond lucky. The 120 doesn't use the fuel that a 140 does, but it will eventually lean it out if you run it long enough.