Simple low oil pressure blinking warning light

[mudnut]

The tank will be the hard part. Pretty much the same as the pressure bulb on an old Davey water pump.

[dom14]

The tank will be the hard part. Pretty much the same as the pressure bulb on an old Davey water pump.

It shouldn't be. Empty small LPG canister can be adapted for the job. Most of them come with a schrader valve. Fittings can be bought from Pirtek fairly cheap I reckon. Solenoid also should be able to able get for nothing from a wrecker.

Controller is the one I'm not too sure about.

What does it do?!!

I kinda picture is as a relay similar to the ones used for auto choke.

What I'm not too sure about is how the built up pressure in the storage tank is enough to push
the oil all the way to the hydraulic lifters!

[mudnut]

Have no idea. So I will sit back and watch you set it up. I thought a diaphragm or plunger would be needed to store the energy of the pressure, so it will feed back into the system. You would have to find the optimum pressure so it pushes the oil out but slowly enough that the oil pump can recharge it. But in saying that, maybe the controller is a timer. So that way you can't loose pressure if you leave the ignition on.

[dom14]

Have no idea. So I will sit back and watch you set it up. I thought a diaphragm or plunger would be needed to store the energy of the pressure, so it will feed back into the system. You would have to find the optimum pressure so it pushes the oil out but slowly enough that the oil pump can recharge it. But in saying that, maybe the controller is a timer. So that way you can't loose pressure if you leave the ignition on.

Not sure about the diaphragm technique.
I imagined the the tank get filled with oil under pressure and as soon as the solenoid shuts when the ignition is turned off, and
the pressure get stored in the tank. May be not.
I think it's too fiddly to use a diaphragm when an electric pump can be utilized without any issue.
It's also possible to simplify the electric oil pump operation by making it a manual operation before starting the engine, so you don't have to wire it up to be auto with a relay similar to the auto choke one.

I can't say I'm gonna do that for sure.
You put the idea into my head.
I just liked the idea of sitting back and watching you do it DIY.
Sounds like you're talking about buying it and fitting it in.
I guess that's not a bad idea if you don't have time to muck around with the fittings.

I would do it using an electric pump. I reckon it's lot simpler that way and by making it to a manual operation
you simplify it even further.

[mudnut]

The thing is with liquid, it won't compress so I don't see a solid tank doing the job. Hydraulic pressure can split things (nipples and such) open relatively easily.

https://www.youtube.com/watch?v=llhcATrmsBg

[dom14]

The thing is with liquid, it won't compress so I don't see a solid tank doing the job. Hydraulic pressure can split things (nipples and such) open relatively easily.

https://www.youtube.com/watch?v=llhcATrmsBg

Pretty entertaining fella. Not to mention very creative.

I'm still thinking the prelube thing can be pretty simple with a 12V electric pump, which can be bought
cheaply from fleabay and setup a manual press button to trigger it before starting.

With the engine oil pump running and forcing the oil into the container. Then when ignition off and solenoid shuts. Some pressurized oil stay in the tank. Not sure whether it's anywhere near enough to push oil all the way to the valve lifters. At it's best it would just hiss out few droplets of oil.
Yeah, the diaphragm technique or the electric pump is the way to go, except I dont have much of an idea on how to setup that diaphragm thing.

[GeeYou8]

I think the diaphragm on the water pressure tank is to stop the air that provides the spring being dissolved into the water & lost, is air soluble in oil?
Dry sump pump ($$$) & electric motor ? Could also run after shut down to keep cool oil going to turbo.
I don't think you are going to be able to pump up the lifters as they would need to be moving in order to pump up, but the oil could be right up to them ready.
Graham

[dom14]

I think the diaphragm on the water pressure tank is to stop the air that provides the spring being dissolved into the water & lost, is air soluble in oil?
Dry sump pump ($$$) & electric motor ? Could also run after shut down to keep cool oil going to turbo.
I don't think you are going to be able to pump up the lifters as they would need to be moving in order to pump up, but the oil could be right up to them ready.
Graham

That should be good enough for lifters, shouldn't it?

I didn't understand the bits "the diaphragm on the water pressure tank ".

I also didn't understand "Dry sump pump ($$$)"

[dom14]

Some good information on prelube system(s) here.

http://www.roversd1.nl/sd1web/oil.html

http://industrialprelube.com/Pages/Wiring.php

[GeeYou8]

That should be good enough for lifters, shouldn't it?

I didn't understand the bits "the diaphragm on the water pressure tank ".

I also didn't understand "Dry sump pump ($$$)"

The pressure pumps for rainwater systems have a tank with a diaphragm, water on the lower side & air on the upper side, the pump pushes water into the lower side against the air pressure, when the water pressure gets to a set point the pump turns off, when you open a tap water pressure is supplied from the tank until the pump restarts. The diaphragm separates the water & the air.
A dry sump oil pump is an oil pump that is generally belt driven, used on racing engines that don't store all their oil in the crankcase, they are expensive.
Some things to look out for in a DIY system would be:
Oil volume, a pressure tank is going to take say a litre of oil from the sump when the engine is running and put it back at some time, that is the difference between max & min on the dipstick.
Oil Pressure/Flow, as you fill your tank, you are taking oil away from the engine, will need to control pressure & flow to your tank.

Have you looked at one of those dodgy "suck the oil out of the dipstick hole" oil change pumps?
You would need to find somewhere to pick up oil from.
Graham