how much oil should flow when an oil line blows?

[TomM]

If an oil filter line blows do you get a gusher with a lot of oil spewing? I'm working on a rebuilt engine and only get a trickle out of the oil gallery. But the gauge shows 40PSI.
Does it make any sense to be getting that pressure but no volume?

Tom

[toojeeps]

From my experience, leaking oil lines, forgetting to tighten the oil filter top, thre should be more than a trickle of oil. A pencil size stream of oil came out when the oil line separated.

[wesk]

If you were to remove any of the main oil gallery plugs or the gear spray nozzle at the front you would get almost a 1/4" diameter stream of oil. If you have a gallery plug out and 40 PSI and hardly a trickle you have a plugged gallery. Your reading 40 PSI at the rear most tap on the gallery but you have something plugging at least partially the gallery. You can use the hydraulic formulas to compute flow vs pressure vs orifice or tube diameter.

[Oldsalt]

I discovered recently that my M-38 has the inlet fitting on the oil filter canister soldered full and then drilled into a nozzle orfice. I have not pulled the oil line from the filter to the timing gear, so I don't know if there is a nozzle there. If you were to pull the oil hose on the outlet from my oil filter you would only get a trickle. I would be worried about this except that I've had this jeep for over 35 years and have never had any problem with the timing gear.

Watch it fall apart tomorrow since I bragged about it.

[wesk]

The inlet line restrictor is there to keep the system oil pressure up where it belongs. There is not a nozzle on the bottom end of the oil filter return line. The timing gear engines use a nozzle screwed into the main oil gallery in the blocks front face.


The timing gear oil spray nozzle is the hex fottong just above the crank gear.