From: Kevin McMurtrie
Subject: Re: Multi Spark Electonic Ignition
User-Agent: MT-NewsWatcher/3.3b1 (PPC Mac OS X)
Date: Wed, 22 Jan 2003 00:03:05 GMT
NNTP-Posting-Date: Tue, 21 Jan 2003 16:03:05 PST
In article <email@example.com>,
firstname.lastname@example.org (Bill) wrote:
>I have recently purchased a spitfire multi-spark unit and am trying to
>understand how it works.
>I would like to start by saying that it certainly does appear to work,
>very well, I have a kit car with a V8 rover engine and it's improved
>the performance noticeably, although I have yet to confirm this on a
>rolling road. And there is a 10 % + improvement in fuel consumption.
>So my question is how does it work?
>I'll describe the product first
>About 2 inches long
>About an inch in diameter
>Rattles when shaken
>Apparently contains two disks
>The system apparently gives 5 sparks, I assume of the same voltage but
>1/5th of the amperage of the original input.
>The unit is sited between the coil and the distributor, and can be
>used with any ignition system
>I believe the unit may have been developed by Rolls Royce during the
>war and may also be available currently in South Africa
>I would really appreciate any information on this anyone has on the
>unit, its development, and how it works.
>Many thanks for your time, if you know of another discussion group
>this could be posted in please let me know.
It's based on the highly effective Placebo Effect. Seriously. It does
nothing. The best ignition source for a single spark plug is one burst
of power with a voltage rise fast enough to arc with consistant timing.
If anything at all is being done by your in-line rattle, I'd say it's
compensating for poor engine tuning by luck. There might be a much
larger performance increase waiting to be unleashed by a proper tuneup.
Get the plugs re-gapped, adjust the valve clearance, fine tune the
ignition timing, clean the injectors or carb, inspect all filters, make
sure the O2 sensor is not getting slow, and catch up on any missed