Garage10,
Just to head off what seems to be a slight bit of confusion:
ACCUSUMP is made by Canton. They are one and the same company. We know the
oil pans as Cantons because that's the name they are sold under. The accumulator is made by Canton, but branded ACCUSUMP. Don't ask me why - I don't know
There are other accumulators made by other companies such as Moroso. Since I've not used any of the others, I can't comment on them.
It has become quite clear to me that I would likely have lost my engine's bearings on the race track several times without the accumulator. I have the trap-door equipped Canton "road race"
oil pan and it clearly will not by itself allow my
oil pressure to stay up reliably on the track. This may be due to other factors than the pan, such as Hal's mention of the valve cover area drainback rates being too slow, or when in a long, highspeed turn on the track, or even a skidpad; my oil pressure drops a lot. This device keeps the pressure up nicely under those circumstances.
Infrequent starts are another good place to use the accumulator.
Sorry if I added to the confusion.
Tom