Date: Tue, 7 May 2002 15:01:24 +0100 From: "drabux" <drabuxnopsamail.com> Subject: Re: Turbo Dump Valve
Since it is an 8v model it won't have and AMM and therefore there should be no problems with an atmoshperic dump valve. Alanb "KeithG" <noonenopsamhlink.net> wrote in message news:ab8eg8$hmb$1nopsam.atl.mindspring.net... > Get a 'piston type', but keep it as a recirculating system. If you have it > dump to atmosphere, the air which was metered by the AMM will be dumped and > there will be a rich period which may affect Catalytic converter life and > could possibly affect your passing emissions test next time through. There > are piston type valves which hook into the existing piping. I suggest these. > > the violent vibration may be due to a worn out rubber bit somewhere. Look at > the engine mounts, a-arm inner bushings, etc. Also inspect the ball joints > and tie rod ends for wear. Your shudder may also be totally electrical in > nature. Look at plug wires, rotor, cap, coil,ignition amplifier and the > connector on the side of the distributor. > > Good luck, > > KeithG > > "Paul Halliday" <pjghnopsamail.com> wrote in message > news:B8FD4EB0.102FC%pjghnopsamail.com... > > Hi, > > > > After some research and a lot of reading, I am thinking of replacing the > OEM > > plastic recirculation valve on my 1989 900 APC Turbo (8V B201 engine) with > > an atmospheric dump valve. > > > > The reading that I did came up with a fairly even split between those who > > consider this an absolutely necessary replacement and those who say leave > it > > well alone. > > > > What are your thoughts? > > > > I'd like to hear from drivers who have made this replacement, especially > > from those who have fitted the Trent Saab atmospheric dump valve which I > am > > most likely to buy. > > > > Do I need to make any other replacements as well, say fuel pressure > > regulator or waste-gate actuator? > > > > TIA, > > > > Paul > > > > 1985 900i 16V > > 1989 900 Turbo > > homepage.mac.com/pjgh > > > >
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