View Single Post
mark houghton mark houghton is offline
mark houghton's Avatar
Join Date: Jul 2008
Location: Central Washington State
Posts: 3,899
Originally Posted by Benny771 View Post
Could his wastegate diaphragm be torn, holes...... This is what was wrong with mine. They are rubber and dry out over time also get holes from use.
Benny, let's think about that. If the diaphram is torn, then the WG won't function, i.e., it won't open in response to the boost pressure signal because the pressure will just leak through the torn diaphram and the WG valve won't open. Wouldn't overboost be the result, as opposed to no boost at all? Our friend Rob is dealing with a (at the moment) phantom no-boost scenario.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.
Old 04-14-2012, 06:46 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #29 (permalink)