04-30-2009, 09:25 AM
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CC Member
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Join Date: Jun 2004
Location: Potomac,
MD
Cobra Make, Engine: West Coast, 460 Ford Racing Crate w/ TREMEC TKO 600
Posts: 732
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How to Measure and Estimate Exhaust System Backpressure
FYI-
I ran across this ref. on exhaust system applications.
While its written by Caterpillar and focuses on turbo-diesel engines (oooh.... that hurt to type), it offers a good explanation on how to set up backpressure measurements on your exhaust system. There is also an equation that is simple to follow to allow you to estimate (A to B comparisons) exhaust system backpressure if you have muffler pressure drop data, gas flow rate (cfm) for your engine,and exhaust gas density at the measured AFR (lets say AFR of 12.5-13.0:1 @ WOT peak power).
See pages 21-25 for the details at the linked document below.
http://www.gregorypoole.com/products...%20SYSTEMS.pdf
__________________
"...some assembly required, ages 8 and up...... well that took longer than expected......
Last edited by kitcarbp; 04-30-2009 at 10:11 AM..
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