RB26 rebuild parts list: refresh, fast road and big power

The RB26DETT is a 2,568 cc straight-six with an 86 mm bore and a 73.7 mm stroke. This list groups the parts we sell by build level. We supply parts; your engine builder does the build.

• Gasket kit and head gasket
• Rod bolts
• Rod and main bearings, chosen to measured clearances
• Timing belt, tensioner, idler and water pump

Nitto RB26 engine gasket kit | HKS RB26 grommet head gasket | Bullet Race RB MLS head gasket | Tomei conrod bearings | Tomei main bearings | RB26 timing belt guide

Sort out the oil pump and crank drive while the engine is apart.

RB26 oil pump and crank collar guide | Nitto RB flat drive crank collar

Head studs are a common step on faster builds, often with main studs at the same time.

HKS head stud Pro | Tomei RB26DETT head stud set | Tomei RB26DETT main stud set

These are the pistons, rods and cranks we list. Agree sizes and specs with your engine builder.

Tomei forged piston kit 86.2 mm | Nitto RB26 pistons | Tomei forged H-beam conrods | HKS H-beam conrod set | Nitto RB26 H-beam conrods | Nitto RB26 crankshafts | Nitto RB26 stroker kits | Superforma piston ring compressor sleeves

Nitto's RB30 Wide Journal Drag Stroker Kits come in 3.2, 3.4 and 3.6 litre sizes, with aluminium Nitto/Carrillo connecting rods. Nitto designs them for all-out drag and high horsepower builds, and says the 3.6 litre kit is for billet blocks only.

Nitto RB30 3.2L drag stroker kits | Nitto RB30 3.4L drag stroker kits | Nitto RB30 3.6L drag stroker kits

Bullet Race Engineering makes the Nissan RB26 Billet Block, machined from 6061 billet aluminium with four-bolt mains. Bullet lists a remote oil filter kit as needed to fit it, and the head's stud holes must be drilled out to 14 mm. Bullet's RBx Drag Extreme Billet Block is a drag-only RB30 block, and it needs a dry sump.

Bullet Nissan RB26 Billet Block | Bullet RBx Drag Extreme Billet Block

Some big power builds use a dry sump. Kiwi CNC and Platinum Racing Products both make billet dry sump pans for the 4WD RB, with the front diff housing built in.

• Kiwi CNC Nissan RB 4WD Billet Dry Sump Pan and Diff Housing: made in New Zealand from 6061-T6 aluminium, with a removable diff housing that suits the R32 and R33 4.11:1 and R34 3.54:1 gear sets. Kiwi CNC sells it on its own or with a Dailey Engineering 5-stage pump, and offers an oil pump blank as an option.
• Platinum Racing Products RB 4WD dry sump kit: a one-piece billet pan with a Dailey Engineering 5-stage pump and air separator, and a removable diff assembly.

Ask your engine builder which oiling set-up suits your build.

Kiwi CNC RB 4WD billet dry sump pan | Kiwi CNC RB 4WD billet dry sump pan with Dailey pump | RB26 oil pump and crank collar guide

More power needs more fuel, and most builds upgrade the fuel system in stages.

• In-tank pump: Tomei makes 255 L/h and 350 L/h in-tank pumps for the R32 GT-R, and separate ones for the R33 and R34 GT-R. Tomei says they bolt on to the stock adapters. Our GT-R fuel pump upgrade guide shows which one fits your car.
• Twin pumps or a surge tank: Radium Engineering's late Nissan fuel pump hanger fits the R33 and R34 Skyline and takes one or two pumps. Its Fuel Hanger Surge Tank (FHST) for the R32 GT-R is a surge tank inside the stock fuel tank, with one, two or three pumps feeding the engine and a lift pump keeping the surge tank full. Radium says a lift pump is needed in every install, the pumps are sold separately, and the FHST works with E85.
• Mechanical pumps: the biggest builds can use a mechanical pump, driven off the engine rather than electrically. Platinum Racing Products makes a mechanical fuel pump kit for its 4WD RB dry sump. It runs off the dry sump belt at half engine speed and has a coupling to suit a Kinsler pump. Kinsler rates its Series 2 Tough Pump mechanical pumps at 8.68, 10.62 and 12.58 GPM at 4,000 pump rpm and 100 psi.

E85: if you run E85, every part that touches the fuel needs to be rated for it, from the pump and hanger to the lines, fittings, filter and rail. Check this on each maker's page. Radium and Aeromotive both say their PTFE fuel hose suits E85, and Aeromotive says PTFE line won't harden, micro-fracture or let fuel vapour through like normal rubber braided line. Radium says PTFE hose needs PTFE-specific hose ends, and that not all fuel line can be fully submerged in the tank. For filters, Aeromotive recommends its 10-micron Microglass element for alcohol fuels. E85 also needs more fuel than petrol for the same power, so see our RB26 injector upgrade guide.

Ask your tuner which fuel system suits your power target and fuel.

Tomei fuel pump R32 350 L/h | Tomei fuel pump R33 and R34 350 L/h | Radium FHST R32 GT-R (Walbro GSS342 / AEM 50-1200) | Radium FHST R32 GT-R (TI Automotive E5LM) | Radium FHST R32 GT-R (Walbro F90000274) | GT-R fuel pump upgrade guide | RB26 injector upgrade guide

Stock gearboxes have limits, so ask your builder what yours will take at your power level. These are the main options, from the factory gearbox up.

• Stock and R34 Getrag: Nissan lists a five-speed manual for the R32 GT-R. The R34 GT-R has a Getrag six-speed, and NISMO has offered a Getrag six-speed conversion kit that fits it to the R32 and R33 GT-R. NEAT Gearboxes in Australia makes upgrade parts for the R34 GT-R's Getrag (the V160), including billet selector forks, a billet mid plate made with Albins, and synchro sets.

Some owners run the R34 Getrag in high power builds, but that doesn't mean it will last. How long any stock gearbox survives depends on the power, how the car is driven and how well the gearbox is maintained.

• Sequential gearboxes: Samsonas designs its Nissan GTR sequential gearboxes for the R32, R33 and R34 GT-R. PPG makes a six-speed sequential with a billet case for the R32, R33 and R34 GT-R, and Albins offers its low-profile ST6-LP six-speed sequential as a swap for the Nissan GT-R.
• Automatic and DCT conversions: HPR Tuning makes kits to fit an 8HP automatic or a seven-speed BMW M dual-clutch gearbox (DCT) to the Skyline GT-R, and says neither needs chassis modifications. HPR says its DCT kit keeps the stock ATTESA 4WD, and its 8HP kit uses an R32 or R33 transfer case.
• Drag-only: ATI makes an adapter kit (915222) to fit an RB26 to a Chevy Powerglide or Turbo automatic. It needs an ATI custom 8-inch converter, and ATI says an OEM bellhousing needs modifying for starter clearance.

Ask your builder which gearbox suits your power target and how you use the car.

Samsonas Nissan GTR sequential, 4 speed | Samsonas Nissan GTR sequential, 5 speed | Samsonas Nissan GTR sequential, 6 speed | GT-R parts interchange guide

Sources (makers' own product pages): Nitto (drag stroker kits), Bullet Race Engineering (RB26 billet block, RBx Drag Extreme), Kiwi CNC (dry sump pan) and Platinum Racing Products (dry sump kit).

Fuel system sources (makers' own product pages): Radium Engineering (R32 GT-R surge tank, late Nissan hanger), Platinum Racing Products (mechanical fuel pump kit) and Kinsler (Tough Pump). Tomei details are from our GT-R fuel pump upgrade guide.

E85 sources (makers' own pages): Radium Engineering (PTFE hose, fluid connections guide) and Aeromotive (PTFE fuel line, filter elements).

Gearbox sources (makers' own pages): NISMO (Getrag conversion, in Japanese), NEAT Gearboxes (Getrag V160 parts), Samsonas (GTR RWDs, GTR RS90), PPG (R32 to R34 GT-R sequential), Albins (ST6-LP), HPR Tuning (8HP kit, DCT kit) and ATI (RB26 adapter kit). The R34 GT-R's Getrag six-speed is cross-referenced from NISMO, NEAT Gearboxes and HPR Tuning.

RB26 2.8 stroker vs 2.6 | RB26 cam upgrade guide