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Ross Performance Nissan RB (Twin Cam) Head Drain Adaptor
£63.91
£53.26
In Stock
SKU
306000-16
The Ross Performance Parts Nissan RB Twin Cam Head Drain Adaptor is designed to help prevent potentially dangerous amounts of oil from pooling in the back of the head.
Excessive top end oiling is an inherent design problem with the RB platform when the factory oil pump is upgraded or on engines that see sustained high RPM use. The oil drain holes in the head are too small to displace the increased amount of oil being delivered to the head.
This can at best lead to oil being lost through the cam cover vents and PCV system, through to a destroyed engine from oil starvation when all of the oil is stored in the cam covers instead of the sump!
It’s recommended that engine builders install a correctly sized oil restrictor in the head when upgrading the oil pump which will further help reduce the risk of excessive top end oiling.
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Nissan RB Twin Cam (RB20 / RB25 / RB26) Head Drain Adaptor
The Ross Performance Parts Nissan RB Twin Cam Head Drain Adaptor is designed to help prevent potentially dangerous amounts of oil from pooling in the back of the head.
Excessive top end oiling is an inherent design problem with the RB platform when the factory oil pump is upgraded or on engines that see sustained high RPM use. The oil drain holes in the head are too small to displace the increased amount of oil being delivered to the head.
This can at best lead to oil being lost through the cam cover vents and PCV system, through to a destroyed engine from oil starvation when all of the oil is stored in the cam covers instead of the sump!
It’s recommended that engine builders install a correctly sized oil restrictor in the head when upgrading the oil pump which will further help reduce the risk of excessive top end oiling.
Key Features:
Dual direction for flexible plumbing options.
Fits into existing core plug hole at back of head. Requires drilling and tapping of 2x M6 holes for fastening.
Low profile AN-8 extended fitting included to minimise external dimensions and allow ample firewall clearance.
Designed to allow the adaptor to be rotated for ease of hose routing.
Integrated mesh screen filter which can also help diagnose potential valvetrain problems.
For use with RB20, RB25 and RB26.
Got any questions or feedback about the RB Head Drain or any other Oil System accessories? Email [email protected]
Applications
Nissan Skyline R31 GTST RB20DET
Nissan Skyline R32 GTS RB20DE
Nissan Skyline R32 GTST RB20DET
Nissan Skyline R32 GTR RB26DETT
Nissan Skyline R33 GTS RB25DE
Nissan Skyline R33 GTST RB25DET
Nissan Skyline R33 GTR RB26DETT
Nissan Skyline R34 GT RB25DE
Nissan Skyline R34 GTT RB25DET NEO
Nissan Skyline R34 GTR RB26DETT
Nissan Stagea WC34 RB20DE
Nissan Stagea WC34 RB25DE
Nissan Stagea WC34 RB25DE
Nissan Stagea WC34 RB25DE NEO
Nissan Stagea WC34 RB25DET
Nissan Stagea WC34 RB25DET NEO
Nissan Stagea WC34 260RS RB26DETT
Nissan Cefiro A31 RB20DE
Nissan Cefiro A31 RB20DET
Nissan Cefiro A31 RB25DE
Nissan Laurel C32 RB20DET
Nissan Laurel C33 RB20DE
Nissan Laurel C33 RB20DET
Nissan Laurel C33 RB25DE
Nissan Laurel C34 RB20DE
Nissan Laurel C34 RB25DE
Nissan Laurel C34 RB25DET
Nissan Laurel C35 RB20DE
Nissan Laurel C35 RB25DE
Nissan Laurel C35 RB25DET
Please Note
*please check application before purchase, still unsure? email [email protected] or phone 01409231887
*Dual Overhead Cam (DOHC) Only RB20DE RB20DET RB25DE RB25DET RB26DETT
Oiling Systems
An engine must be lubricated for smooth, efficient performance, and an oiling system addresses this need. There are two main types of oiling systems, a wet sump and a dry sump.
The wet sump system is typical in most production cars, with the oil sitting in an oil pan reservoir stored beneath the crankshaft. An internal oil pump, which sucks the oil through a tube from the bottom of the pan’s sump, distributing oil throughout the engine. The wet sump system provides the advantage of a simple design, however there are potential issues regarding oil control particularly in modified engines and racing applications.
The large g-forces pulled under acceleration, aggressive braking and cornering at speed:
cause the oil in the pan to gravitate away from the pumps pick-up tube, which will stave the system of oil and cause damage to the engine;
cause the oil to slosh in the pan, creating a higher probability of the crankshaft slapping into the oil as it turns, whipping the oil into an aerated froth and reducing the oiling systems ability to create pressure; and
each revolution of the crankshaft causes the parts to move rapidly through the oil and air in the pan, generating minute amounts of parasitic power loss caused by viscous drag and air drag (windage) negatively impacting horsepower
The alternative, a dry sump set-up, uses two or more oil pumps, and a separate oil reservoir. There are a minimum of two stages, one stage for pressure and at least one stage for scavenge. The pressure stage supplies oil from the bottom of the reservoir into the engine, and the scavenge stage/s remove oil out of the dry sump pan and return this oil (and air) to the reservoir, with the option for adding multiple scavenge stages to ensure maximum oil is scavenged from the engine. The reservoir (tank) controls the flow of oil, removing air bubbles, and sending the oil back to the oil pump to be routed through the engine.
In a dry sump set-up, the oil pump is usually mounted to the side of the engine, and driven by a belt off the front of the engine. It is typically lower than the reservoir, so it is gravity fed, rather than requiring a pump to suck the oil upward, as in the wet sump design, and performs more efficiently as it receives positive pressure on the suction side.
The dry sump set-up is more appropriate for a racing application, compared to the wet sump system, as it provides:
improved reliability due to consistent oil pressure;
the shallow oil pan allows the engine to be mounted lower in the chassis, effectively lowering the centre of gravity and provide flexibility to modify underfloor aerodynamics;
the option to move the oil tank within the confines of the car to improve weight distribution;
the option to increase oil capacity to be as large as you like;
less chance of engine damage as no longer susceptible to starving the engine of oil due to movement issues caused by cornering or launching forces;
protection against parasitic power loss as it keeps oil away from the crankshaft to reduce oil drag (viscous), and pulls out most the of air to reduce air drag (windage);
cooler oil due to the external storage, plus additional cooling available by utilising an oil cooler, mounted inline between the pressure outlet and the engine; and
easier maintenance, and replacement, as the pump is external to the engine.
The key documented disadvantage to a dry-sump setup is the added cost and complexity to your engine build, however, from the weekend enthusiast to the professional racer the significant advantages far out way the cost, remember no oil equals no engine!
The instructions on this page are guidelines only.
It is recommended that the installation of any performance part be undertaken by a qualified automotive specialist.
Keeping our installation guides up to date is an ongoing process. If any information you require is not listed or if you have a specific question please contact our team directly.
High-quality components for automotive enthusiasts
In 1981, Ross Performance Parts started producing ultra-high-quality engine components for passionate automotive enthusiasts. Since then the modified car scene has changed a lot. Cars are now faster, engines more powerful, and the demands of modern racing are greater than ever. Ross Performance Parts engine protection solutions provide the assurance that your investment is secure, letting you #GoHarder for longer.
Now a global enterprise, Ross Performance Parts is a proud Australian company. Based in regional Victoria, Ross Performance Parts designs, develops and manufactures engine protection solutions for automotive fans around the world.
To maintain their position at the cutting edge of the performance automotive industry, they are continuously innovating and developing new ways to deliver more horsepower, more reliably. Ross's harmonic dampers, trigger kits, oiling systems and engine accessories have been proven by more than three decades of race and street use.
#RossPerformanceParts #SendItWithConfidence
| Vehicle / Engine Manufacturer | Nissan |
|---|---|
| Product Brand | Ross Peformance |
| Part Type | Oil Drain & Blank Kits |
| Manufacturer | Nissan |
| Model | Skyline, Stagea |
| Variant | R32, R33, R34, WC34 |
| Engine | RB20DET, RB25DET Spec 1, RB25DET Spec 2, RB25DET Neo, RB26DETT R32, RB26DETT R33, RB26DETT R34 |
| Lead Time | In Stock |
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