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The 20R head has straight ports, so can flow better than the 22R head, improving high RPM power. The 20R head is a simple bolt-on modification for the pre-1985 block, but also requires the use of the 20R intake manifold, making it almost impossible (there's a lot of matching necessary) to use with the 22R-E EFI system. [21]
Joan Lunden (born Joan Elise Blunden, September 19, 1950) is an American journalist, an author, and a television host. Lunden was the co-host of ABC 's Good Morning America from 1980 to 1997, and has authored over ten books.
A header is a manifold specifically designed for performance. [1] During design, engineers create a manifold without regard to weight or cost but instead for optimal flow of the exhaust gases. This design results in a header that is more efficient at scavenging the exhaust from the cylinders. Headers are generally circular steel tubing with ...
Joan Lunden and husband Jeff Konigsberg leaving the hospital with their first set of twins, Kate Elizabeth and Max Aaron, in 2003. (Photo by L. Busacca/WireImage) (L. Busacca via Getty Images)
Joan Lunden at the world premiere of Apple TV+'s The Morning Show in 2019 in New York City. (Photo: Astrid Stawiarz/Getty Images,) (Astrid Stawiarz via Getty Images)
When the exhaust valve opens, the high pressure exhaust gas escapes into the exhaust manifold or header, creating an "exhaust pulse" comprising three main parts: The high-pressure head is created by the large pressure difference between the exhaust in the combustion chamber and the atmospheric pressure outside of the exhaust system
I'm out shooting the stories with the Today show cameras," she says. "On Nov. 19, I will be back on 'Good Morning America' for the 40th anniversary." Lunden is active on social media, but please ...
Aftermarket extractor manifold In a four-stroke engine , an exhaust manifold which is designed to maximise the power output of an engine is often called "extractors" or "headers". The pipe lengths and merging locations are designed to assist in filling the cylinder with the next intake charge using exhaust scavenging . [ 1 ]