Originally posted by JyYyM:
Thanks for the link, everything is clear now... well almost...

With the normal electric valve, the accumulator will hold 1.5qt (granted that it's the 1.5qt one) regardless the preassure? or will the amount of oil held in the accumulator will vary accordingly to the preassure in the system?

I ask this because I don't know if I should get the normal electric valve or the EPC one with the preassure sensor, which if I understand correctly will release the oil only when the preasure drops beyond the specified value (20psi in this case) but, the preasure in the accumulator will be higher, around 50psi.

Am I correct?

Thanks again!




With the standard electric valve the actual volume of oil in the accumulator varies dynamically (sp?) as the system pressure varies.

With Accusump's EPC valve the accumulator holds as much as the system can pump into it at opperating temperature*, and holds the oil there until a pressure drop is detected at which point the valve opens.


*unfortunately the volume of oil in the accumulator will still vary even with the EPC valve, since as the engine oil warms-up thusly thinning out, oil pressure will be lower than at start-up, so the system's ability to over come the air chamber's pressure is reduced.

My point is that it is uncertain if the volume rating of the accumulator is computed when the system is at 1psi or 100psi, or somewhere in between.

Either way, the higher the system pressure immediately prior to a pressure drop, the greater potential oil volume exists in reserve.



87 Mustang GT 5.0L TURBO