Canton accusump vs. Moroso accumulator

[Dano]

......at 7 lbs, how much oil in accumulator?

[curtis reed]

Originally Posted by Dano

......at 7 lbs, how much oil in accumulator?

It's the 3qt version but really only holds about 2 1/4-2 1/2 quarts typical. It will depend on engine oil pressure also. My on track pressure was about 48-50 hot. When I put the car in the trailer I always bring the rpm up so I get the pressure up to about what it sees on the track because at idle I only have about 20-25lbs depending on how hot the oil is. I want a good amount to prelube when I start up next time. When I have changed oil and checked that's about what I have seen as far as volume in the accumulator.

[Dallas Kelly]

Originally Posted by Dano

......at 7 lbs, how much oil in accumulator?

I run a Moroso 3qt however I pre-charge it to 25psi. I can tell you that filled with 80psi engine oil pressure it only holds a measured 52oz of engine oil. You have to decide how low you want your engine oil pressure to fall by the time the accumulator is empty, whatever the triggering event.

[Chevy55]

Originally Posted by Dallas Kelly

I run a Moroso 3qt however I pre-charge it to 25psi. I can tell you that filled with 80psi engine oil pressure it only holds a measured 52oz of engine oil. You have to decide how low you want your engine oil pressure to fall by the time the accumulator is empty whatever the triggering event.

The accumulator doesn't start filling till the engine until engine oil pressure overcomes the preset pressure in the accumulator.

[Dano]

So.....without a regulated pressure switch, when you turn engine off, doesn't the pressurized oil in accumulator pump back to the oil pan? If so, no pre-oiling at start up, (how important this is, is debatable) would happen as the accumulator is empty.

[Darcy Clarke]

Without a switch or manual valve the oil pressure will bleed off. Not having a switch to me is a waste of time as it defeats the purpose.

Darcy Clarke
A/SA SS/EA

[Nmbr1GMfan]

I think the pre-lube feature is a secondary feature to the accumulator. I would guess most are utilizing it's capabilities as a safeguard against oil starvation.

[curtis reed]

Originally Posted by Dano

So.....without a regulated pressure switch, when you turn engine off, doesn't the pressurized oil in accumulator pump back to the oil pan? If so, no pre-oiling at start up, (how important this is, is debatable) would happen as the accumulator is empty.

I run the electric valve on mine but I don't run the pressure switch.

[mishsc]

Thank you all for your comments and opinions. Your help is much appreciated.

[Chevy55]

Originally Posted by Dano

......at 7 lbs, how much oil in accumulator?

I set mine the same way, there's no oil in it at 7psi but as oil pressure builds it fills the accumulator at the same rate as the engine.