RB26 Oil Pressure and Oiling : Some Scary Data

Roberto from Rav Performance goes over some of his experience and history with RB26 oiling. As he says in his video, this is best case scenario. Flat ground in Florida. A stock car isn't generating much g force, but its enough for us to see some dips in oil pressure on acceleration. As the car gets faster, it gets worse and worse. You can imagine that at more than 1 g of cornering, what the oil is doing. Anything but being at the pickup. This shows that if you have it out, extend the sump. If its still in the car, do an Accusump. Do both if you want to be extra careful. Also if you have the ability to do it, setup oil pressure protection. Better to shut down than toss a rod out the side of the very expensive and hard to get RB26 block. Check out the video below.

RB26 oil flow diagram

Goal of this video is to show why we take our oiling modifications as seriously as we do. Your RB26 (all engines) need to maintain optimum oil pressure to stay alive and anything that can be done to ensure this crucial.

Any questions please email us info@ravperformance.com

Oil flow diagram for RB26 Rb26dett translated by Garrett

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Engine Oil Capacity (quarts)
Item RB20E/RB25DE RB25DET RB26DETT
H Level 4.2 4.3 4.8
L Level 3.2 3.5 3.7
Oil and Filter Change ~ 4.4 ~4.8 ~4.9

Coolant Capactiy (liters)
RB20/RB25DE/RB25DET RB26DETT
Capacity ~9 ~9.2

Engine Oil Pressure(kg/cm2, psi)
RPM Idling 2000 6000
RB20E ~1.0, 14 ~3.8,54 ~4.8,68
RB25DE ~1.0, 14 ~3.3,47 ~5.3,75
RB25DET ~1.0, 14 ~3.5,50 ~5.6,85
RB26DETT ~1.5, 21 ~3.0,43 ~4.6,65

Engine Oil Capacity (quarts)
Item	RB20E/RB25DE	RB25DET	RB26DETT
H Level	4.2	4.3	4.8
L Level	3.2	3.5	3.7
Oil and Filter Change	~ 4.4	~4.8	~4.9

Coolant Capactiy (liters)
	RB20/RB25DE/RB25DET	RB26DETT
Capacity	~9	~9.2

Engine Oil Pressure(kg/cm2, psi)
RPM	Idling	2000	6000
RB20E	~1.0, 14	~3.8,54	~4.8,68
RB25DE	~1.0, 14	~3.3,47	~5.3,75
RB25DET	~1.0, 14	~3.5,50	~5.6,85
RB26DETT	~1.5, 21	~3.0,43	~4.6,65

An Accusump is a great choice if you can't change the pan

If you don't have an enlarged pan, then an Accusump can help minimize drops in oil pressure. The Accusump is an oil accumulator that stores a reserve of oil under pressure. Under conditions of a drop in oil pressure, the oil that is in the Accusump pressurizes the oiling system. Once the oil pressure comes back up, the Accusump

fills back up

RB Oiling : Oil Pumps : Oil Restrictors : Oil Pan Modifications
Oil Change and Oil Filter for a Nissan Skyline GT-R
RB26dett Oil Pump Gears Going Oval: Oil Pump Failures

Nissan Skyline Oil Pressure : Oil Pressure Senders : Bad Oil Pressure Readings

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