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'm normally copping my own abuse from neglecting my daily drivers. "Those suspension bushes will last a bit more", "Don't worry about the oil leak, just keep topping it up". The project cars I'm always doing things slowly on them as I'm wanting them to be done better, and neater, and nicer. Luckily I don't have to deal with 18 year old Matt's "Learning to wire" stuff in the project cars. And there's only one piece of wiring I'm displeased about in the Landcruiser, and it's about to be cut out... However, the box loads of parts that have been going through this place lately for the Landcruiser... Brake pads Brake Rotors Full handbrake overhaul Wheel Bearings Seals Swivel hubs Steering Boxes Half the suspension joints Shocks Air bags (Ones to go in the rear springs for towing) Water pump Timing kit Lower timing case Harmonic Balancer Radiator Lots of other little seals and shits Gas struts for the bonnet New power window switches And god knows what else I've forgotten... Ha ha ha I have my fingers crossed the pinion seals don't start leaking on the diffs, that the transfer case doesn't leak, and the gearbox input shaft doesn't leak, nor the rear main seal. As they're about the only seals I haven't replaced in the driveline! I'm seriously eyeing off buying new caliper rebuild kits front and rear brake calipers... I'll probably recheck all the valve clearances soon too, and hopefully, it should be all good and sweet to haul some long distance trips again!
    • Every time I pull my 3x gauges out of the console and see the crack-addict way that I did the wiring, and I just can't bring myself to tear it all apart and "make it nice", because it is currently working. In fact, the last time I was in there I probably made it worse.
    • The best part is when you own the car long enough that you look back and find your OWN ham fisted amateur shit!
    • The annoying part about neglect, is when you start to replace one thing, and find ten more broken things. Ham fisted monkey repairs you normally only find out about when trying to do something unrelated! Ha ha   Neglect you can kind of anticipate the huge costs to fix it all. Ham fistedness is normally a shock the first time your work on a new old car, as everything "looked" good before.
    • For DBA, check out their guide table here. https://dba.com.au/wp-content/uploads/2023/01/Direct_Replacement-Guide-2021.2.pdf   Additionally they have some other guides and info on how to make sure you choose the right pad.
×
×
  • Create New...