Date: Tue, 7 May 2002 16:24:32 -0400
From: "KeithG" <noonenopsamhlink.net>
Subject: Re: [WAS: Turbo Dump Valve] NOW: Possible Performance Increases


Simon has a web page as does Eric vanSpelde and there is a bit of info there. The dump valve becomes a performance increase only when it cannot hold the pressure against it and it bleeds off pressure in the intake manifold. Did your car come with a dump valve? Does it have an intercooler? An intercooler would be one way of improving power. One can be had from a wrecked T16 (did I get the lingo right?) You will need the other turbo pipes as well. Some speak of low restriction air filters as a means to HP increase. These scare me. Other possibilities are with the APC system. There is a simple modification possible on these as well. I am assuming that yours is the same as the APC on the T16S, but am not sure. http://web.inter.nl.net/users/nospam/toppage1.htm (Eric's page) http://www.nospam/home.htm Regards, KeithG "Paul Halliday" <pjghnopsamail.com> wrote in message news:B8FDD088.10342%pjghnopsamail.com... > in article ab8nlq$4qq$1nopsam.atl.mindspring.net, KeithG at > noonenopsamhlink.net wrote on 07/05/2002 15:14: > > > 'tis true I did not catch that it was an 8V. I am too used to what we get > > here and the last year of the US 8VT was '84. My '84 did not have a recirc > > valve (or an intercooler for that matter). On the CIS injection, doesn't it > > rely on the flow of air across a flap to regulate fuel injected? If so, it > > would be a similar deal with excess fuel during a dropped throttle event. > > What sort of boost pressure are you running? The Bosch valve is not too bad > > as long as you are not running greater than stock 16V boost levels. If you > > are looking to increase performance, there may be a better start point than > > a atmospheric dump valve, unless you really just want the noise maker > > factor. > > > > KeithG > > Sorry, I didn't make it clear that it is an 8V. In the UK, the C900 Turbo is > an 8V - the 16V'ers are usually called 900 Turbo 16V. > > I'm not *that* fussed about a performance increase. I'm very happy with the > boost curve and the delivered power. I have actually had the boost turned > down due to an over-boost problem. I presume that with a more more > responsive dump valve the boost can be upped again? > > The noise factor is kewl - I can pfwooosh like the Escort RS Turbo nuttaz :) > > Nah, not that bothered - I'm more keen on prolonging the life of the > turbocharger and the car generally. The 155HP is good enough for me - it > makes a nice motorway cruiser, which is why I bought it. Out of interest, > what can be done to increase performance? > > Thanks, > > Paul >

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