The Murphy Builders Site

Speaking of pre-oilers, I ran across a pretty nifty design once - forget
where - but could be easily made I think. It had no pumps and was totaly
automatic. It was a canaster that appeared to be about the size of a
propane torch cylinder with an electrically operated solinoid valve on the
end plumbed to the oil pressure port on the engine. The valve is hooked to
your ignition circuit and the cylinder is mounted with the valve down.

When the engine is running oil pressurizes the cylinder (there is air in the
cylinder) untill it equals whatever the running oil pressure is. When you
shut off the ignition the valve closes and the pressurized oil is trapped in
the cylinder. Next time you start as soon as you turn on the ignition the
pressurized oil is dumped into the engine.

Joel






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Joel Jacobs Pre-oiler. This sounds real neat Joel, but my only fear is ,if
by chance you lost pressure over an idle period of time, your initial engine
start up run would be supplying oil to the reservoirs instead of where it is
needed at a most critical time. I guess the answer would be to have a
pressure gauge on the system and a switch for the solenoid.-No
Pressure-solenoid closed. This way you could by-pass the unit until the
engine is warm and ready to give up a bit of oil until you re-pressurize.
Interesting idea though. Rebel"652"




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Even simpler just use a check valve with a reducing orifice so that only a
small quantity of oil goes into the pre-oiler at a time but it can dump
quickly.
Drew

At 07:52 PM 2/7/2002 -0500, you wrote:

Joel Jacobs Pre-oiler. This sounds real neat Joel, but my only fear is ,if
by chance you lost pressure over an idle period of time, your initial engine
start up run would be supplying oil to the reservoirs instead of where it is
needed at a most critical time. I guess the answer would be to have a
pressure gauge on the system and a switch for the solenoid.-No
Pressure-solenoid closed. This way you could by-pass the unit until the
engine is warm and ready to give up a bit of oil until you re-pressurize.
Interesting idea though. Rebel"652"


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