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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.

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