In todays episode we sit with Bill From Xtreme Cylinder Heads
Xtreme Cylinder Heads Official Instagram: https://www.instagram.com/xtremecylinderheads
0:00 – Intro
2:57 – Bills Origin Story
6:38 – Starting a Machine Shop From Scratch
7:35 – Building Custom Porsche Castings
10:14 – Biggest Machine Shop Startup Challenges
11:47 – Handling Warranty & Mistakes
13:11 – Hand Porting a Cylinder Head
14:19 – CNC vs Hand Porting
15:36 – Hiring & Training a Machine Shop Team
16:42 – 2JZ Drag Racing History: Nero & Ekanu
23:19 – Uni Seat Technology for 2000+ HP
26:03 – Do You Need a Uni Seat?
27:59 – RB26 Builds: America vs Australia
28:58 – Best Valve Seats for Street Builds
31:05 – Best Valve Spring & Cam Brands
33:31 – Shim Under Bucket vs Shimless
35:33 – Valve Float Explained
38:05 – Billet vs Cast Cylinder Heads
40:36 – RB26 Design Flaws & Improvements
41:15 – What a Flow Bench Really Tells You
43:30 – Why You Should Keep Your Build Simple
44:12 – Air-Cooled Porsche Culture
47:59 – Building Their Own Porsche Casting
53:27 – History of CNC Cylinder Head Porting
54:39 – Rolls-Royce RR350 Alloy Explained
56:08 – Water Passage Design Mistakes
58:09 – Air-Cooled vs Water-Cooled Cost
1:00:18 – Hardest Porsche Heads to Rebuild
1:03:16 – Porsche Head Pricing Breakdown
1:04:29 – Global Client Base
1:06:16 – Why Porsche Stopped Making Heads
1:08:13 – Machine Shop Industry Competition
1:08:59 – Favorite Engine Platforms
1:11:36 – Big Block Chevy Cylinder Heads
1:13:27 – Current Workload & Business Status
1:14:05 – Inside a High-End Machine Shop
1:16:00 – In-House Welding & Repair
1:17:11 – Subaru Cylinder Head Problems
1:19:00 – Full 2JZ Build Cost Breakdown
1:20:32 – How to Choose a Machine Shop
1:23:02 – Red Flags When Picking a Shop
1:26:44 – Why This Shop Skips Deposits
1:29:21 – CFD Porting: The Future
1:31:26 – RB26 Supra Build Update
1:35:21 – 1964 International Scout Build
1:36:08 – Never Been in a MK5 Supra
1:39:55 – Baja 1000 Off-Road Racing Story
1:47:40 – Xtreme Cylinder Heads Contact Info
1:48:45 – Outro
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