Jaymar
Well-Known Member
- Joined
- Jun 15, 2018
- Threads
- 2
- Messages
- 989
- Reaction score
- 1,153
- Location
- Portland, OR
- First Name
- Jaymar
- Vehicle(s)
- 2022 GT/CS - Rapid Red
It still doesn't add up, take the most fouled cat you've ever seen and it was nowhere close to blowing a head gasket because of cylinder overpressure. And that's far worse than an Ecoboost head design. This video is just some yahoo trying to sell a hair-brained idea that has no facts to back it up. Ecoboom just doesn't exist without people forcing too much air or timing on the motor or "tuners" that have no idea what they're tweaking with. I'm sure someone somewhere has blown up a factory engine, maybe they drove it like grandma going to church even but it just doesn't happen as often as the internet would like you to believe. And Bob the budget builder usually leaves out all of the details when he does cry to the world about blowing his motor. You've been working on cars long enough to know how to read between the lines of the customer report, read what isn't there.Your description is largely depended on cam centerlines and valve timing which on the new cars is variable so there are scenarios that can lead to increased combustion pressure over the normal limits from high velocity intake charge and extreme exhaust backpressure both over filling the cylinder before both valves close resulting in gasket failure/head lift and cylinder distortion.
Headers work by tuning the exhaust pulses in the header to work in conjunction with the intake pulses so that in an ideal world the pulse in the header will be just arriving at the exhaust valve as the fresh intake charge is about to exit past the exhaust valve right as it closes to keep the most air/fuel charge in the cylinder. Just as the intake valve should be timed to close just as the intake charge is beginning to slow its velocity into the cylinder to capture the greatest amount of air/fuel charge. The cam is the heartbeat of the engine, and the intake and header combo must be matched to that heartbeat to achieve the overall best performance.
BD
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