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Date: Wed, 19 Jan 2005 16:56:27 -0000
From: "John Hudson" <mypcnospam.com>
Subject: Re: Opened DI Casette - For those interested


Bear in mind with Hall-effect I haven't any points to play with, the ignition system was not touched until 40k miles when the plugs were changed unecessarily in view of their condition. I cannot speak for the engines power output but the mpg figures I get are too good to mention and the car sails through the UK emission test. Eventually DI ignition will be the way to go once the development of casettes has been carried out on customers cars. In the meantime I will use my boot/trunk for luggage and not spares. "Dave Hinz" <DaveHinznospamcop.net> wrote in message news:3553adF4ecar8U1nospamvidual.net... > On Tue, 18 Jan 2005 18:08:39 +0000, Colin Stamp <colinnospamp.plus.com> wrote: > > > > Like I said, DI tries to trade off the number of breakdowns against > > the cost of each one. Maybe not everyones idea of the best compromise, > > but that's what they went for. > > Well, DI is a lot more complicated than just a replacement for points, > condensor, rotor, coil, cap, and wires. It's an integral part of the > engine instrumentation and management system. The spark plugs are used > as combustion chamber sensors to determine the impedance of the fuel:air > mixture, to decide (among other things) optimal boost and spark timing > on a per-cylinder basis. These things just aren't possible with > a distributor, cap, and rotor type system. > > > You'll get a very jaundiced view of DI > > by reading newsgroups like this one. People won't post about it unless > > it breaks. > > > > I'm sure there are other benefits too. Cost maybe? > > I doubt it's cheaper than old-style ignitions systems, but emissions > and performance can be attained with DI that aren't possible without > it. > > Dave Hinz

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