From street driven daily builds to all out competition engines, BZE Cylinder Head Design delivers precision built Honda and import cylinder heads. Every head is custom ported and flow tested.
Basic Port & Polish
Starting at $1,200
✓ Multi-angle valve job (5-angle cut)
✓ Hand port and polish
✓ Valve guide inspection
✓ Deck surface to spec
✓ Assembly with OE components
Best for: Street builds, moderate power gains
Stage 1 CNC Porting
Starting at $1,850
Everything in Basic, plus:
✓ CNC ported intake/exhaust runners
✓ Flow bench tested (265+ CFM)
✓ Competition valve job
✓ Upgraded valve springs/retainers
✓ Billet cam caps (where applicable)
Best for: High-performance street, entry-level track
Stage 2 Full Race Prep
Starting at $2,900
Everything in Stage 1, plus:
✓ Maximum CNC porting (290+ CFM)
✓ Oversized stainless valves
✓ Titanium retainers
✓ Race-spec valve springs
✓ Chamber optimization
✓ Complete blueprint and flow data
Best for: All-out competition, maximum power
The Numbers That Matter
Flow Performance: 265-290+ CFM depending on package
Port Velocity: Optimized for your RPM range and application
Surface Finish: Machined flat to .0005" tolerance
Valve Job: Newen 5-angle radius cut for maximum flow
Quality Control: Every head flow-tested and inspected
Materials: Premium stainless and titanium valvetrain components available
WHY CHOOSE BZE
Built Different
✓ 20+ Years Experience – Wes Spry alongside Brad Zawislak has been building championship-winning Honda and import engines since 2003
✓ Flow Bench Verified – Every head is tested on our Superflow SF-600 bench before and after porting
✓ 5-Axis CNC Machining – Computer-controlled precision you can't achieve by hand
✓ Proven Results – Our heads power 7-second drag cars, road race winners, and endurance champions
✓ Dyno Tuning Available – Optional in-house dyno testing to verify gains
✓ Fast Turnaround – Most builds completed in 2-3 weeks
How It Works
1. Send Your Core
Ship your cylinder head to our Rock Hill, SC facility. We accept all cores – stock, previously ported, or damaged.
2. Inspection & Quote
We inspect for cracks, wear, and damage. You'll receive a detailed quote with recommended services.
3. Machining & Porting
Your head goes through our precision machining process – decking, valve guides, seats, and CNC porting.
4. Flow Testing
We verify flow numbers on our bench and compare to baseline. You'll receive before/after data.
5. Assembly
Valvetrain components installed with race-spec clearances and assembly lube.
6. Final QC & Ship
One last inspection, detailed build sheet, and secure packaging for return shipping.
What We Support
Honda/Acura:
K-Series: K20A, K20C, K24A, K24Z (all variants)
B-Series: B16, B17, B18A, B18C (GSR/ITR)
D-Series: D15, D16 (SOHC & VTEC)
H-Series: H22A, H23A (all Prelude variants)
F-Series: F20C, F22C (S2000 AP1/AP2)
Nissan:
VR38DETT: GTR R35 platform
SR20DET: S13/S14/S15 applications
KA24: 240SX performance builds
VQ Series: 350Z/G35 (by quote)
Mitsubishi:
4G63: Evo 8/9 and DSM platform
4B11: Evo X applications
Other imports by consultation – call us!
Order Your Cylinder Head Package
Choose from our cylinder head service packages: Basic Head Refresh, Performance Build, or Race Spec. Select your package, place your order, and we'll handle the rest. Each package includes professional porting and assembly.