The most popular Reversion plates with ditch surrounding a shear lip works best when the port SEES the ditch and it is not shrouded from the view up the port to the ditch.What happens is in milliseconds of the exhaust energy pulse pushing back up the roof of the intake tract slames into the ditch and turns around coming down the shear lip side pulling on the incoming charge helping accelerate the incoming charge.Bill C.
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Checkered Flag Machine & Ceralli Competition Engines
Racing engines and induction development
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