Could you use an external pump plumbed in at the sandwich plate and call it a day?
Also, what about separating the oil channels, having the external pump go to the mains and have the OEM pump cover the top end, or vice-a-versa?
Quote:
Originally Posted by Element Tuning
Mike, We have actually thought of running an external oil pump as they are used on race engines. The pump needs to be much bigger than you think as there is a ton of volume needed. The OEM pump is actually very large and high volume but at the same time Subaru decided to feed the heads simultaneously increasing the volume demands.
The issue that needs to be overcome when trying to add a supplemental oil pump is how to keep it from working against the oem pump.
An external pump can replace the oem pump entirely.
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