Thread: No boost?
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Tippy Tippy is offline
Chain fence eating turbo
 
Join Date: Dec 2008
Location: Austin, TX
Posts: 8,007
Quote:
Originally Posted by Raceboy View Post
Actually it will because the wastegate will not begin to open so soon (with single port control, wastegates tend to begin to open at ~1/3 of the target pressure).
The stiffer the spring, the sooner it will wake up. This is the whole idea behind dual-chamber control, just with latter the wastegate spring stiffness is literally reduced when boost target has been reached.
He meant the factory Holset WG flapper, not the external.
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Cory - '87 C3.2 (3.4, stock 3.2 heads, cams, intake, with 75mm Mustang TB) Guards/Blk - turbos new to old 1). Borg Warner S366 (66mm comp/73mm turb/0.91 T4 divided ~1.4 bar), 2). Holset HX40 8-blade (58mm/"P" trim 0.84 T4 divided 1.4 bar), 1/4 mile 12.02 @ 129 MPH (street tires), 3). Turbonetics 60-1 HiFi (60mm/"P" trim 0.81 A/R T4 open 1.2 bar), 431whp - MegaSquirt II/EDIS ignition/80lb inj
Old 12-04-2013, 12:56 PM
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