RB25det build list

When I decided to rebuild the RB25, I wanted to make it “new”. I also wanted to upgrade to be strong and I wanted to address any common issues. 

When it was discussed about horsepower and other factors, I am always reminded that I am not building for anything specific and I really don’t need to be chasing numbers. I do want to make a strong engine.

Echoing what Marco said, “No cheap ebay parts”, really let me focus on a few things. 

I want to use recognized Japanese companies. It is hard to not recognize the newer technology that improves the RB’s capabilities. Australia and New Zealand have been so much research into the RBs for the last 10-15 years and have improved upon Japan’s tuning. 

Here is the current list of parts I am using for the RB25det:

  • RB25det rebuilt block – honed, new plugs, tested….
  • CP pistons with rings and wrist pin kit (86.5mm +0.5mm 14.7 cc 9.0:1)
  • ACL Bearings – rod 6B2960H-STD
  • ACL Bearings – main 7M2394H-STD
  • ARP main studs – 202-5403
  • ARP head studs – 202-4301
  • Tomei MLS head gasket -TA4070-NS06A
  • Tomei exhaust manifold gaskets – TA4060-NS06A
  • RB25det head – checked and serviced.
  • Tomei valve springs (B type)
  • Tomei valve guide set – TA309A-NS06A
  • Tomei Poncams (update 6/2021) – TA301B-NS06A
  • Franklin Engineering head drain kit with hose
  • Oil pan with welded bung
  • Franklin Engineering Billet alloy Cam covers seals
  • Tomei oil restrictor
  • RB25det crank cleaned/checked
    Nitto extended crank collar
  • RB25det transmission (purchased)
  • RB25det transmission rebuild kit (not installed)
  • Nissan thrust bearing
  • Nissan throw out bearing
  • Nismo short shifter
  • Nismo clutch disc, pressure plate and flywheel
  • ARP RB25det flywheel bolts (102-2802)
  • Greddy Intake manifold – 13522316
  • Greddy throttle body adapter
  • RB25det Throttle body (replace Q45)
  • Boost Doc Upper radiator hose insert (for Greddy intake manifold)
  • RB25det TPS
  • RB25det exhaust manifold (cleaned up and ceramic heat coated with Chrome X finish)
  • RB25det exhaust manifold heat shield and turbo shield (cleaned up and ceramic heat coated with chrome x finish)
  • New OEM timing belt and idler tensioners
  • N1 Water pump
  • N1 oil pump
  • Tomei timing belt
  • Nismo thermostat
  • RB25det Rear main seal (OEM Nissan)
  • Nubis Exhaust manifold studs (raw brokerage)
  • Nubis Rear main seal bolt kit (raw brokerage)
  • Nubis oil pan bolt kit (raw brokerage)
  • Nubis Water pump (7/21)
  • Kudos Motorsports cam timing back plate kit (7/21)
  • Z1 Motorsports RB25det lower timing cover bolts (6/21)
  • ZSpec – RB timing cover and coil pack fastener set (6/21)
  • Phase2 clear cover
  • Phase2 Cam gears (blue)
  • Phase2 pullies (blue)
  • Phase2 Fuel rail (blue)
  • Nismo 740cc injectors
  • Tomei Fuel pressure regulator Type S
  • Tomei Fuel pressure regulator adapter
  • Tomei Arms Turbo MX8562
  • Syko Performance elbow
  • Syko Performance engine mounts
  • Trust Downpipe
  • Grex Oil filter relocation kit (on order)
  • Trust Oil cooler
  • PRP RB billet LS1 alternator bracket kit with pulley
  • PRP RB series billet alternator bracket
  • Pontiac GTO LS v8 alternator (140 amp)
  • PRP R35 coil pack kit (bracket, Hitachi VR38 coil packs and Wiring Specialties harness)
  • Wiring Specialties grounding kit
  • ATI damper for RB25det – DPR-RB25-R33
  • Ultra Heaven Koyorad S13 v8 mounting bracket
  • Koyorad S13 LS V8 radiator
  • Phase2 RB25 starter
  • Phase2 Coolant overflow tank
  • Custom Wiring Specialties RB25det harness
  • Dakota Digital – SGI 5C
  • Chase Bays – power steering kit (with reservior and cooler)
  • Chase Bays – fuel line kit – S13 with RB engine
  • Chase Bays – brake line relocation inbay kit
  • Optima battery – yellow top 
  • Battery relocation kit (piecing together)