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John Hamilton
John Hamilton
Navarre, FL
(23 posts)

Registered:
10/28/2009 11:18PM

Main British Car:
1965 MGB 1840 cc MGB

Accusump
Posted by: John Hamilton
Date: June 13, 2020 08:18PM

Is anyone running an Accusump on a Rover V8? From reading their options, they don't have an electric valve that will operate at the low pressure these engines make.


roverman
Art Gertz
Winchester, CA.
(3188 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: Accusump
Posted by: roverman
Date: August 29, 2020 06:11PM

I ran an acu-sump on my Huffaker TR8, while learning to drive it. Manual control, ball valve. " Low oil pressure these engines make"
Got specifics ? Why would solenoid/electric valve care about low/high pressure ? Art.


John Hamilton
John Hamilton
Navarre, FL
(23 posts)

Registered:
10/28/2009 11:18PM

Main British Car:
1965 MGB 1840 cc MGB

Re: Accusump
Posted by: John Hamilton
Date: December 26, 2020 08:38PM

Maybe it's my understanding of how these work that is the issue. As a pre-oiler, the type or pressure of the valve is irrelevant. If used to prevent oil starvation during cornering, it seems to me that the low RPM oil pressure would allow the Accusump to bleed off pressure and might empty the cannister. This would leave the system unable to pressurize the oil passages in times of need. Is this incorrect? My first engine had extremely low pressure, 5 lbs at idle up to about 30 lbs maximum. My 1800 B motor makes 50 lbs at idle with hot oil.
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MadMarx
Christian Marx
Germany
(54 posts)

Registered:
01/02/2014 11:54AM

Main British Car:
1977 Triumph IMSA TR8 Group 44 Canada Rover 4L

authors avatar
Re: Accusump
Posted by: MadMarx
Date: January 06, 2021 02:27AM

How about to take care about the pickup of the pump, rising the pump pressure, baffling of the oil pan?
That would help more.
Or switch over to a dry sump system as my car has.
60psi pressure at speed, 40psi at idle.



Edited 1 time(s). Last edit at 01/06/2021 02:29AM by MadMarx.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(6496 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: Accusump
Posted by: BlownMGB-V8
Date: January 06, 2021 12:10PM

An accusump can be helpful... provided you remember to open the valve. (and to close it before switching off the motor) This can be an automatic function, at least the first part can. But have you noticed that the 1/4 million mile engines in new cars don't need them? something to think about.

Jim


John Hamilton
John Hamilton
Navarre, FL
(23 posts)

Registered:
10/28/2009 11:18PM

Main British Car:
1965 MGB 1840 cc MGB

Re: Accusump
Posted by: John Hamilton
Date: March 11, 2021 10:26AM

While assembling my new engine I discovered a possible cause of my extremely low oil pressure on the original engine. The high pressure relief valve seemed to have a burr in the bore. One the valve opened, the spring pressure wasn’t strong enough to fully seat the plunger. I cleaned up the burr in the bore with rolled sandpaper on a drill and now the plunger moves in and out smoothly and seats as it should. Pre oiling the engine using a drill looked good, nice flow up to the heads, no leaks anywhere. I hope to have it back in the car this weekend, so I’ll report back on pressure at idle and revs.


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