The tables below are basic references to help guide you to the exhaust-pipe size needed to balance the prevention of excessive back-pressure while maintaining adequate exhaust-gas velocity.
Editor’s Note: The easy to read tube size charts replace our original exhaust diameter calculator for ease of use.
L2545-0606A 2.5 inch 45 Degree Elbow 6 inch x 6 inch ID-OD Aluminized L2545-0606A What other exhaust parts will I need? Depending on your current exhaust system, you could need several truck pipes to complete the job. RBP RBP-5005 Clamp-on Truck Exhaust Tip Adapter 2.5 Inch Inlet to 4 Inch Outlet in Black for Custom Application. 3.8 out of 5 stars 24. Get it as soon as Wed, Oct 14. Exhaust Adapter Connector 2.5' ID to 3' ID, A-KARCK Exhaust Pipe Reducer 4' Overall Length 304 Stainless Steel. 4.7 out of 5 stars 10. Get the best deals on Car & Truck 2.5 Inch Exhaust Pipes & Tips when you shop the largest online selection at eBay.com. Free shipping on many items. 1 Pair Double Wall Weld On Exhaust Tips 2.5' Inlet 4' Outlet 5' Long S/S Black. Was - $42.50 9% OFF. Exhaust Tip Hi-Polished Series Stainless Steel Round Slant Cut. TOTALFLOW 48-409-225-15 Universal Straight Exhaust Pipe Extension - Tube Replacement 409SS Straight Tube 2.25 Inch Outer Diameter - 48' long Exhaust Pipe 4.4 out of 5 stars 44 $37.59. Nickson Universal Exhaust Connector 2-1/4'ID X 2-1/4'ID. 5.0 star rated product (3 reviews) #548511. First, only make your measurements once the exhaust pipe has cooled. You’re at risk of acquiring third-degree burns if you come in contact with a hot pipe. In some cases, you may need to place the front of your vehicle on lifts to access.
Quick Exhaust System Math
Easy Way To Estimate: Your intake system needs to flow 1.5 CFM per engine horsepower, and your exhaust system needs to flow 2.2 CFM per engine horsepower.
Good Way To Estimate: Take engine RPM x engine displacement, then divide by two. This is the intake volume. Use this same volume of air for the exhaust system, but then correct for thermal expansion (you need to know exhaust temps to figure things out).
Exhaust Pipe Size Estimate: A good section of straight pipe will flow about 115 CFM per square inch of area. Here’s a quick table that shows how many CFM each common pipe size will flow, as well as the estimated max horsepower for each pipe size:
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All pipes are assumed to be 16 gauge steel.
All pipes are assumed to be 16 gauge steel.
Exhaust Component Sizing and Fitting ~ ID vs OD
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Learn about how individual exhaust components are measured, fit together, and what tools and techniques you’ll need to put together a well-fitted, leak-free, custom exhaust system.
Carl Pritts, a tech adviser at Summit Racing, explains inner diameter (I.D.) vs. outer diameter (O.D.) measurements and shows various clamp and joint options, depending on your particular components…
Exhaust Back Pressure and Tube Diameter
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Social importer 1 0 download free. Learn about back pressure, how it works and why it is important to your engine.
Al will also give you a break down of which diameter exhaust tubing you should choose depending on if you choose a single or dual exhaust and the horsepower of your engine.