Before I put this on

Chevy55 · 11-01-2018, 07:05 PM

I have a little different school of thought on starting and running an engine with an accusump.

If you start the engine with the valve open and the accusump empty it takes awhile for a cold engine to build oil pressure because the accusump will be filling the same time that you want all the oil going thru the motor.

I like the manual valve because I can keep it closed when starting the engine and then open it slowly only causing a slight drop in oil pressure when filling the accusump then leave the valve open for the rest of the day.

I run a 1 1/2 qt accusump with the engine at normal oil level, 7 qts with a 7 qt pan and nothing extra for the accusump, this lowers the oil level in the engine during the run, reducing splash and increasing HP.

My problem was losing oil pressure in the traps and using this procedure solved that problem because as soon as oil pressure dropped on shutdown the accusump would push oil back into the motor keeping the oil pressure up till the oil in the pan stabilized.

IMO it's like having the best of both worlds, steady oil pressure and a low oil level.

Eman · 11-01-2018, 07:30 PM

Also keep in mind if you change your engine oil and you want to change all of it you have to empty the accusump too.
How and where you plumb it in is important. If you open the accusump with the engine off it might make the gauge go up, but is it flowing through .003 clearance or is it dumping back through the oil pump 1/2" hole and back into the pan?

gmonde · 11-01-2018, 07:39 PM

it is legal in stock,, I ran the accusump on my amc stocker ,, it was a 3 quart system with the 12 volt electric check valve
when the system is properly charged when installed and during oil changes, it provides oil pressure before the engine is started and protection at the loss of oil pressure

the one way 12 volt check is actuated when the ignition switch is turned on and the oil pressure and 3 quarts of oil from the previous start up is stored is released in to the port that's closest to the oil pump ,this will get you oil pressure on your gauge before the engine is cranked ,,, once the engine is started ,oil pressure and oil is stored back into the accusump and once the hobbs switch has seen the pressure it will shut off the the 12 volt check valve and the pressure and oil will be held at the engine oil pressure running ,,

hope this help the explanation

the hobbs switch activates when oil pressure drops below the pressure designated (they come in 15psi or 35psi

Frank Castros · 11-01-2018, 08:36 PM

Doug Duell uses one on C/SA Barracuda.

11-01-2018, 07:05 PM	#1
Chevy55 Banned Join Date: Nov 2014 Posts: 324 Likes: 625 Liked 179 Times in 89 Posts	Re: Before I put this on I have a little different school of thought on starting and running an engine with an accusump. If you start the engine with the valve open and the accusump empty it takes awhile for a cold engine to build oil pressure because the accusump will be filling the same time that you want all the oil going thru the motor. I like the manual valve because I can keep it closed when starting the engine and then open it slowly only causing a slight drop in oil pressure when filling the accusump then leave the valve open for the rest of the day. I run a 1 1/2 qt accusump with the engine at normal oil level, 7 qts with a 7 qt pan and nothing extra for the accusump, this lowers the oil level in the engine during the run, reducing splash and increasing HP. My problem was losing oil pressure in the traps and using this procedure solved that problem because as soon as oil pressure dropped on shutdown the accusump would push oil back into the motor keeping the oil pressure up till the oil in the pan stabilized. IMO it's like having the best of both worlds, steady oil pressure and a low oil level.

11-01-2018, 07:30 PM	#2
Eman Member Join Date: May 2014 Location: E TN Posts: 474 Likes: 16 Liked 133 Times in 76 Posts	Re: Before I put this on Also keep in mind if you change your engine oil and you want to change all of it you have to empty the accusump too. How and where you plumb it in is important. If you open the accusump with the engine off it might make the gauge go up, but is it flowing through .003 clearance or is it dumping back through the oil pump 1/2" hole and back into the pan?

11-01-2018, 07:39 PM	#3
gmonde Senior Member Join Date: Nov 2007 Posts: 615 Likes: 56 Liked 165 Times in 59 Posts	Re: Before I put this on it is legal in stock,, I ran the accusump on my amc stocker ,, it was a 3 quart system with the 12 volt electric check valve when the system is properly charged when installed and during oil changes, it provides oil pressure before the engine is started and protection at the loss of oil pressure the one way 12 volt check is actuated when the ignition switch is turned on and the oil pressure and 3 quarts of oil from the previous start up is stored is released in to the port that's closest to the oil pump ,this will get you oil pressure on your gauge before the engine is cranked ,,, once the engine is started ,oil pressure and oil is stored back into the accusump and once the hobbs switch has seen the pressure it will shut off the the 12 volt check valve and the pressure and oil will be held at the engine oil pressure running ,, hope this help the explanation the hobbs switch activates when oil pressure drops below the pressure designated (they come in 15psi or 35psi

11-01-2018, 08:36 PM	#4
Frank Castros VIP Member Join Date: Nov 2001 Location: The Lowcountry. Posts: 3,009 Likes: 2,693 Liked 2,765 Times in 978 Posts	Re: Before I put this on Doug Duell uses one on C/SA Barracuda.

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