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Date: Mon, 22 Aug 2005 00:01:26 +0000 (UTC)
From: Craig's Saab C900 Site <c900nospam.apana.org.au>
Subject: Re: K-Jetronic


"James Sweet" <jamessweetnospamail.com> writes: >> my supercharger is putting out 10psi so I think shimming up the system >> pressure valve is a good start >> as it is about 75psi at the moment, although I think that water >> injection may well be the way to go as it doesn't start knocking till >> about 7psi! >> have any of you guys run a pressure switch on the cold start injector >> so that it comes on at around 5psi? I would be well interested to hear >> the results! >I've heard of it being done, but the cold start injector usually doesn't >have a particularly good spray pattern, and depending on the manifold design >you can run into problems with some cylinders getting a lot of extra fuel >and others getting very little. I didn't think that the cold-start injector was designed to get fuel evenly into each of the intake ports but simply to make the fuel mix richer to help the engine fire easier when it's cold. If a cold-start injector is being used like a '5th injector' it's never going to be very efficient at giving each intake port an even increase in fuel mixture. That's my understanding anyway. 8-) Craig. -- Craig's Saab C900 Page --> http://nospam/~c900 Sydney, NSW Australia Craig's Saab C900 Workshop -- For all Saab C900 Enthusiasts world-wide! http://www.nospam.net http://www.nospam c900nospam.apana.org.au Come and explore our site, and check out our web-forums, mailing list, etc.

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