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Engine Masters
Season 8 • Episode 26 • Header Science: Step vs. Merge
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Engine Masters Season 8, Episode 26: Header Science: Step vs. Merge
We all know there's invisible voodoo that can make or rob power in an exhaust system. The guys explore the merits of stepped headers, whose primaries step up in diameter, and merge collectors, which create an intentional restriction in the collector, against good old-fashioned, no-frills headers. Do the frequency-tuning claims of the steps and the velocity-enhancing merges make a difference to your motor? Absolutely! Watch Engine Masters Season 8, Episode 26 Header Science: Step vs. Merge in HD free online. Enjoy high-quality streaming of Engine Masters Season 8, Episode 26 and share your thoughts in the comments below!
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Episodes
26 episodesAir-to-Air Intercooler, Now With CO2!!
Hot intake air temps are bad, and cold IATs are good, right? But how bad is bad, and how good is good, especially in a boosted application? To find out, the guys explore the benefits of an air-to-air intercooler in terms of power and detonation resistance. They also test out external CO2 foggers that keep the intercooler extra cool.
23 min
High vs. Low Injectors
Our testing has repeatedly shown that carbs make more peak power than EFI, and our explanation is based on the fuel's ability to cool the incoming air on its way to the head. Multipoint injection just can't do that. Or can it? We move fuel injectors up the intake manifold runners to see if the extra distance of suspended fuel makes extra power.
23 min
Tank Testing for Air-to-Water Intercoolers
Exploring the effects of different sized water tanks and their ability to keep the intake charge colder longer; air-to-water intercoolers make power by absorbing the heat of the intake air into the cool of the IC's water.
23 min
The Throttle-Body Throwdown!
The crew compares 90 mm and 105 mm forward-facing throttle bodies against one another, and then to 2000 cfm worth of top-mounted, dual quad-style throttle bodies, all atop a fuel-injected, 700-hp LS7.
23 min
Bellmouth Power
Call it a velocity stack, a radiused entry, or even a salad bowl, the bellmouth is designed to direct and smooth the airflow into the throttle body, creating a more efficient airflow. But does it make power? We'll answer that very question for both N/A and supercharged versions of our 363ci small-block Ford.
23 min
Sequential vs. Batch Fire EFI
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23 min
One Cam, Three Ways
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23 min
Straight Talk About Spark Plugs
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23 min
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23 min
Cams: How Small Is Too Small?
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23 min
When Headers Don't Matter
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23 min
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23 min
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23 min
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23 min
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23 min
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23 min
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23 min
Heat Management
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23 min
A Study in O2 Sensors and AFR Readings
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23 min
Controlling the Hit
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23 min
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23 min
Sniper 2 the Rescue
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23 min
Port v Plate Nitrous Injection
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23 min
The Exhaust Duration Equation
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23 min
Header Science: Step vs. Merge
We all know there's invisible voodoo that can make or rob power in an exhaust system. The guys explore the merits of stepped headers, whose primaries step up in diameter, and merge collectors, which create an intentional restriction in the collector, against good old-fashioned, no-frills headers. Do the frequency-tuning claims of the steps and the velocity-enhancing merges make a difference to your motor? Absolutely!
23 min