Goodson Engine building tools and engine building supply +1 (507) 452 1830 www.goodson.com Company Profile +1 (507) 452 1830 www.goodson.comCompany Profile Contact Us Contact Us David Vizard's PowerTec 10 EP 23 5 Golden porting rules #1 Identifying primary flow restrictions. 29 June 2022 In this, episode 23, DV shows what and where the primary flow restrictions are in the engines through flow of intake and exhaust gases. Identifying and understanding such will lead to far more powerful head porting techniques. The advanced porting shown here is based on DV's 63 years of race & championship winning strategies. Related articles Product Spotlight | HT-45RC | Rockwell Hardness Tester Choosing the Right Flywheel Grinding Stone 6 Ways to Improve Flywheel Grinding Stone Performance "Spark Testing" a Flywheel How to Produce an Ideal Cylinder Head Surface Finish Piston Ring Filing A Tech Lab Tuesday Video What Is Cylinder Chamfer and What Does it Do? Smooth Out Those Sharp Edges Finishing valve seats on today’s multi-valve heads Abrasive Formulas for Valve Seat Grinding You Asked...We Listened Corrosion Prevention Assembly Lubes - Why You Need Them 3 Quick Tips To Improve Your Valve Grinding CONNECTING ROD BASICS Tech Lab Tuesday Presents: Using the V-Twin On-the-Engine Valve Spring Compressor Tech Lab Tuesday Presents: Valve Guide Installation Tools TIPS AND TRICKS FOR SETTING A DIAL BORE GAUGE Back By Popular Demand — Dial Bore Gauge Setting Fixture Tech Lab Tuesday Presents: Magnets in the Machine Shop The Whys and Hows of Demagnetizing Engine Components Magnetic Head Bolt Washer and Valve Spring Shim Removal Tools Make Quick Work of Engine Disassembly Tech Lab Tuesday Presents: Portable Hone Mandrels Counterbore Cutting With 3-D Fast Cut™ Goodson Division, Mach-B Grinding Wheel Shaping & Resizing Specializes in Grinding Wheel Customization Adjustable Powered Valve Guide Driver With Replaceable Pilots Simplifies Valve Guide Installation Block Selection & Machining Considerations | Tech Lab Tuesday Tech Lab Tuesday | Small Shop Porting for Profit High Performance Resurfacing Spray – New Formula – Same Great Performance Portable Crankshaft Polishers In-Stock & Ready to Ship Coolants, Lubricants & Oils Flat Tappet Lifters & Roller Lifters | Tech Lab Tuesday Goodson Named Exclusive Source for Sunnen SGM/VGS Tooling & Consumables Machining Bucket Lifters | Tech Lab Tuesday Video PRK-99 : Intake Port-Reshaping Kit Valve Lapping Valve Spring Testers Goodson Tools & Supplies for Engine Builders Releases 2022 Catalog Goodson Tools & Supplies for Engine Builders Introduces New, Improved 3-D Fast Cut™ Setting Micrometer Goodson Tools & Supplies for Engine Builders Adds CSS ULTRA Grinding Wheel to its Crankshaft and Camshaft Grinding Wheel Selection Goodson Tools & Supplies for Engine Builders Rolls Out New, Improved Black Diamond Valve Guide Sizing System Goodson Tools & Supplies for Engine Builders Brings Back Adjustable Counterbore Kit Goodson Tools & Supplies for Engine Builders Introduces New Generation Valve Seat Stone Holders Goodson Tools & Supplies for Engine Builders Adds 3-D Fast Cut™ Ball Head for Sunnen Insert Holders Goodson Tools & Supplies for Engine Builders Introduces 2021 Catalog Expanding Your Valve Refacer's Capacity | Goodson Tech Lab Tuesday Choosing The Right Valve Refacer Wheel Milwaukee Eight™ Head Plate | Goodson Tech Lab Tuesday Using the Goodson Pistol Grip Vacuum Tester | Tech Lab Tuesday Replacing a Valve Guide/Goodson Tech Lab Tuesday Goodson Tools and Supplies NEW HPOG-1000 Watch it in ACTION! How to use a Dial Bore Gauge Goodson