Jump to content
SAU Community

Recommended Posts

RB25DET cylinder head. $2500
Stage 2 port work
Clearance Machined on CNC accurately (not die grinded)
suits all available cam profiles from drop-ins to
to huge 12.5mm lifts if chasing big power numbers.
Acid Cleaned & Skimmed for fitment by Ultra torque Heads Campbelltown.
will suit RB25 or RB30 as oil gallery plugged & tapped instead of permanently welded.
HKS Cams, HKS Step 2 Valve springs, HKS Adjustable Gears.

This Head will suit Turbo charging your RB30 NA engine or
a power upgrade on your RB25 with VCT delete, or use your own VCT cams if you choose.

Combustion Chambers Lightly Polished &
Modified to for faster flame propagation & detonation prevention.

post-29115-0-09139400-1414994992_thumb.jpg

Oil gallery Plugged instead of welded so head can run VCT.

post-29115-0-42801400-1414995021.jpg

Exhaust Ports relieved & pocket ported

post-29115-0-96476000-1414995000.jpg

Intake port casting smoothed & pocket ported

post-29115-0-41788100-1414995014.jpg

Biggest drop-in HKS cams installed prior to cam lift clearance machining.

post-29115-0-01096300-1414995007_thumb.jpg

HKS drop-ins installed after clearance machining, gained extra 3mm.

post-29115-0-60264100-1414995143_thumb.jpg


cost tally;
$1200 port work
$200 Combustion Chamber Modification
$100 Remove External Casting Marks.
$300 CNC Clearance Machining
$400 Head Service
$400 HKS Cams
$250 HKS Adjustable Cam Gears
$50 Drill Tap Oil gallery & supply VCT Plug & grub screw
HKS step 2 Valve Springs $400
spend over $3000.

Link to comment
https://www.sau.com.au/forums/topic/450320-built-rb25-head/
Share on other sites

  • 2 weeks later...
  • 3 weeks later...
  • 1 month later...
  • 1 month later...


  • Similar Content

  • Latest Posts

    • I’d love to find some where that can recover the dashes to look brand new and original. Mine has a very slight bubble, nothing compared to some I’ve seen though 
    • $170K. I asked one of the guys there as a joke if that price was just for the passenger seat as it was where the price sheet was... he tried really hard to crack a smile 😄 He also mentioned that every single part of the car was inspected and either restored or replaced with a new or as new part, or made from scratch. The interior was incredible, every inch like a new car.
    • Time for a modernisation, throw out the AFM, stock O2s, ECU into the e-waste bin. Rip out the cable throttle, IACV, pedal, etc. into the scrap metal bin. DBW, e-throttle, modern ECU, CANbus wideband, and the thing will drive better than when it left the factory.
    • I agree, don't go trusting those trims. As I said, first step is to put the logger away, and do the basics in diagnosis.   I spend plenty of time with data loggers. I also spend plenty of time teaching "technicians" why they need to stop using their data loggers, and learn real diagnostics.   The amount of data logs I play with would probably blow most people away. I don't just use it to diagnose. I log raw CAN data too, as a nice chunk of my job is reverse engineering what automotive manufacturers are doing.
    • I'm aware, but unless you're actually seeing the voltage the ECU is seeing and you're able to verify the sensors are actually working I find it hard to just trust STFT/LTFT. I will say, logging the ECU comes naturally to me because it's one of the lowest effort methods of diagnosis and I do similar things in my day job all the time. Staring at 20+ charts looking for something that isn't quite right isn't for everyone. NDS1 allows you to log almost everything so that's normally what I do and then sort out the data later. 
×
×
  • Create New...