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Re: Accusump q's
[Re: B G Racing]
#1596771
03/23/14 09:10 PM
03/23/14 09:10 PM
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Joined: Jan 2003
Posts: 2,933
A shed in England
Tig
OP
master
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OP
master
Joined: Jan 2003
Posts: 2,933
A shed in England
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Quote:
Accusumps should always be plumbed after the pump and filter.When the valve is open the engine gets primed,leaving the valve open circulates the oil through the accusump and it becomes another sump or volume of oil to draw from.If you loose oil pressure the air charge will push that extra volume into the engine.The engine oil pressure surpasses the air charge side of the piston(usually only 6 lbs.THe valve is not a one way valve,it's an open or close valve.If you shut the engine and valve off with 90 lbs of engine oil pressure it will hold that pressure until the valve opens, the 90 lbs will enter the oil system and the air charge on the back side will empty the cannister.as soon as you fire the engine that oil will return to the cannister and be part of your entire oil volume availble. 
I agree with but the valve in question is not the on/off valve but the check valve or diode valve. HTH's
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Accusump q's
[Re: Tig]
#1596772
03/23/14 10:03 PM
03/23/14 10:03 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Accusumps should always be plumbed after the pump and filter.When the valve is open the engine gets primed,leaving the valve open circulates the oil through the accusump and it becomes another sump or volume of oil to draw from.If you loose oil pressure the air charge will push that extra volume into the engine.The engine oil pressure surpasses the air charge side of the piston(usually only 6 lbs.THe valve is not a one way valve,it's an open or close valve.If you shut the engine and valve off with 90 lbs of engine oil pressure it will hold that pressure until the valve opens, the 90 lbs will enter the oil system and the air charge on the back side will empty the cannister.as soon as you fire the engine that oil will return to the cannister and be part of your entire oil volume availble.
I agree with but the valve in question is not the on/off valve but the check valve or diode valve. HTH's
I dont know what the heck your talking about.. I had
a open or closed valve... it was electric on mine
but it was either open or closed
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Re: Accusump q's
[Re: plycuda]
#1596775
03/23/14 11:02 PM
03/23/14 11:02 PM
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Joined: May 2006
Posts: 740
WA
JD Dart
super stock
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super stock
Joined: May 2006
Posts: 740
WA
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Quote:
I just hooked mine up this weekend. I have 80 pounds of pressure on the gauge when I turn on the switch the oil gauge goes to around 15 pounds. it will hold it there for a while but why wouldn't it jump to 80. never had one
Did you put check your air pressure should be 5-10 psi with the piston all the way to the extend position easiest way to do this it open your valve put the air charge up to 80-90 psi it will start moving the piston and the pressure will start dropping keep putting in more until the pressure stabilizes. Then you will know the piston is at the end of the bore. Now dump the air psi down to 5-10 psi. Start the car fill it up and see if your pressure will go up will using the accumulator.
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Re: Accusump q's
[Re: MR_P_BODY]
#1596777
03/24/14 05:48 AM
03/24/14 05:48 AM
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Joined: Jan 2003
Posts: 2,933
A shed in England
Tig
OP
master
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OP
master
Joined: Jan 2003
Posts: 2,933
A shed in England
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Quote:
I dont know what the heck your talking about.. I had a open or closed valve... it was electric on mine but it was either open or closed
Check the diagram in the link posted earlier. The check/one-way/diode valve is placed just upstream of the "T" fitting. 
http://gt4motorsport.com/wp-content/uploads/2010/06/accusump_plumbing.png
'74 Challenger..9.46 @ 145.9 1/4, 6.001 @ 118 1/8 so far. 4023lb !!! # N/A, Marsh performance 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 3:73's and real 10.5 radials.
9.51 @ 142.4 1/4, 6.003 @ 114 1/8 with our old mule KB, 572-13, 580 wedge.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 13.88 @ 99.03
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Re: Accusump q's
[Re: MR_P_BODY]
#1596780
03/24/14 12:21 PM
03/24/14 12:21 PM
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Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
B G Racing
master
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master
Joined: Mar 2006
Posts: 9,910
Eighty Four, PA
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Quote:
Quote:
Quote:
I dont know what the heck your talking about.. I had a open or closed valve... it was electric on mine but it was either open or closed
Check the diagram in the link posted earlier. The check/one-way/diode valve is placed just upstream of the "T" fitting.
http://gt4motorsport.com/wp-content/uploads/2010/06/accusump_plumbing.png
I dont run the cooler or that check
The one way valve keeps the oil flowing to the engine as not to have the oil go back to the cooler where it is serves no purpose.Most applications don't run an oil cooler for dragracing,you do see them on stockcars(circle)where oil has to be circulated for long periods of time an needs cooled.
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Re: Accusump q's
[Re: B G Racing]
#1596781
03/24/14 12:26 PM
03/24/14 12:26 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Quote:
Quote:
I dont know what the heck your talking about.. I had a open or closed valve... it was electric on mine but it was either open or closed
Check the diagram in the link posted earlier. The check/one-way/diode valve is placed just upstream of the "T" fitting.
http://gt4motorsport.com/wp-content/uploads/2010/06/accusump_plumbing.png
I dont run the cooler or that check
The one way valve keeps the oil flowing to the engine as not to have the oil go back to the cooler where it is serves no purpose.Most applications don't run an oil cooler for dragracing,you do see them on stockcars(circle)where oil has to be circulated for long periods of time an needs cooled.
Yeah I understand the reasoning but I didnt use it,
when I dumped the tank I would build about 10-15psi
on the engine oil gauge
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Re: Accusump q's
[Re: actionange]
#1596783
03/24/14 12:58 PM
03/24/14 12:58 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Is there any "significant" horsepower gain using an accusump?
I've heard that somewhere has gained 40 hp.
Nope... it does 2 things.. might save your engine wear
if you drop oil pressure on the top end of the track
on decell and it pre oils the engine prior to start
up... I have never heard of a HP gain and it sure
didnt on mine
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Re: Accusump q's
[Re: actionange]
#1596785
03/24/14 10:26 PM
03/24/14 10:26 PM
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Joined: Oct 2005
Posts: 8,902
Ontario, Canada
Stanton
Don't question me!
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Don't question me!
Joined: Oct 2005
Posts: 8,902
Ontario, Canada
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Quote:
Is there any "significant" horsepower gain using an accusump?
I've heard that somewhere has gained 40 hp.
These are "accusumps" - maybe you're thinking of a "dry sump" ?? Completely different animal.
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Re: Accusump q's
[Re: MR_P_BODY]
#1596787
03/25/14 01:10 AM
03/25/14 01:10 AM
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Joined: Jan 2003
Posts: 3,943
Melbourne.....Oz-land
Moparmal
master
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master
Joined: Jan 2003
Posts: 3,943
Melbourne.....Oz-land
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I cant expand the size of my oil pan due to header clearances...
Could I use an accusump as a simple reserve tank, plumbed 'in line' with my oil filter , without using the valve for cold starts etc???
IOW just leave the valve open at all times as an additional reservoir?
67 RO23 clone with 6.1 SRT Hemi and dual quads. Soon to have Drag Pak induction and Throttle body.
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Re: Accusump q's
[Re: Moparmal]
#1596788
03/25/14 01:28 AM
03/25/14 01:28 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
I cant expand the size of my oil pan due to header clearances...
Could I use an accusump as a simple reserve tank, plumbed 'in line' with my oil filter , without using the valve for cold starts etc???
IOW just leave the valve open at all times as an additional reservoir?
Thats what all of us used them for.. BB tend to have
a issue of low oil levels in the pan at the end of the
track so when they hit the brakes the little amount
of oil in the pan sloshes forward uncovering the pick
up and thats when the accusump starts dumping.. so
its basically a larger pan... but just not down there
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Re: Accusump q's
[Re: Moparmal]
#1596790
03/25/14 02:41 AM
03/25/14 02:41 AM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Thx Mr P
So are they fitted up with an 'in' line and an 'out'l line like a oil filter cannister...or do they operate some other way?
There is only 1 line on the tank... as your oil
pressure goes up it fills the tank... if your oil
pressure drops below the tank pressure it starts
dumping in oil via the same line
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