TOMEI HIGH PERFORMANCE OIL PUMP FOR NISSAN SKYLINE GT-R BNR32 BCNR33 BNR34 RB26DETT 193035

 

TOMEI HIGH PERFORMANCE OIL PUMP FOR NISSAN SKYLINE GT-R BNR32 BCNR33 BNR34 RB26DETT 193035

The TOMEI 193035 is an upgraded high-volume oil pump specifically designed for the Nissan RB26DETT, used in the Skyline GT-R BNR32, BCNR33 and BNR34. 

Its main purpose is to solve one of the RB26’s critical weaknesses: maintaining reliable oil supply and pressure at high engine speed. 

🧠 Technical breakdown

Feature	Stock RB26 pump	TOMEI 193035
Pump gear	Sintered-metal type	SCM435 chromoly
Gear size	Standard	Larger/oversized
Flow @ 6,000 rpm	~42 - 47 L/min	~56 L/min
Oil-pressure adjustment	Limited	External adjustable system
High-RPM capability	Weak point	Substantially improved
Intended use	Standard engine	Performance/high-RPM RB26

TOMEI specifically redesigned the gear and cover. The SCM435 chromoly gear provides substantially greater strength, while the strengthened gear cover is intended to reduce cracking/failure risk. 

🔥 Why the RB26 benefits so much

The RB26DETT can experience lubrication problems when subjected to sustained high RPM, circuit use and heavily modified/high-output configurations. Insufficient oil delivery can cause oil-pressure loss and accelerated bearing wear.

The TOMEI pump increases theoretical flow from approximately 42–47 L/min to 56 L/min at 6,000 rpm—roughly a 19–33% increase, depending on which stock-flow figure is used. 

The important engineering distinction is:

More pump capacity ≠ automatically more useful oil pressure.

The engine’s bearing clearances, oil temperature, oil viscosity, galleries and relief-pressure setting all determine the pressure actually seen by the engine.

⚙️ The clever feature: external pressure adjustment

One particularly useful feature is the external oil-pressure adjustment, allowing the pressure to be adjusted without removing the oil pan. That’s a significant advantage during engine setup and calibration. 

For a serious RB26 build, this makes the pump more than simply a “bigger pump”; it becomes part of the engine’s oil-control system.

🛢️ Don’t overlook the oil pan

TOMEI recommends pairing the pump with a larger-capacity oil pan for performance applications. The reason is straightforward:

High-flow pump + insufficient oil volume + hard cornering = potential oil starvation.

A bigger pump cannot compensate indefinitely for an oil pickup that becomes uncovered during sustained acceleration, braking or cornering. TOMEI therefore recommends increased oil-pan capacity, although the pump remains compatible with the factory pan. 

🏁 Best application

I’d rate the 193035 particularly highly for:

• RB26 street/spirited build: ★★★★☆
• High-RPM engine: ★★★★★
• Circuit RB26: ★★★★★
• Drag/high-power RB26: ★★★★★
• Stock daily-driver RB26: ★★☆☆☆

The key benefit isn’t horsepower. It’s protecting the engine’s lubrication system when the RB26 is being pushed hard.

🔩 Ideal RB26 lubrication package

For a serious build, think of it as a system:

TOMEI 193035 pump → high-capacity/baffled oil pan → controlled oil pressure → reliable pickup → appropriate oil viscosity → healthy bearings/galleries

TOMEI’s current catalogue still lists 193035 as its RB26DETT High Performance Oil Pump; its Japanese price revision effective August 21, 2026 lists the new price at ¥158,000. 

Bottom line: the TOMEI 193035 is one of those RB26 upgrades that doesn’t make the dyno sheet dramatically more impressive, but it can make the engine much more resilient when high RPM and high power are involved. 

For an RB26 being built properly, oil control is foundational—not optional.

TOMEI HIGH PERFORMANCE OIL PUMP FOR NISSAN SKYLINE GT-R BNR32 BCNR33 BNR34 RB26DETT 193035