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Date: Thu, 21 Oct 2004 06:01:14 +0000 (UTC)
From: Craig Ian Dewick <craignospamd.and.round.upside.down.living.my.life.underneath.the.ground>
Subject: converting conventional points ignition to hall-effect in c900 - possible?


Hi everyone, I'm looking at figuring out what's involved to replace the conventional points ignition currently in my 1983 900S (8V, n/a, auto box) with hall-effect breakerless ignition as featured in C900's imported into Australia from 1985 and later. As far as I can tell, the main changes would be: - replacing the distributor or rebuilding it with retrofit hall-effect sensor components, - replacing the coil if the breakerless ignitions require a coil with a different resistance value, - installing either the Saab OEM (or 3rd-party) electronic ignition module or a 3rd-party equivalent, - wiring it all together. I have not been able to find any source of parts to retrofit the existing distributor in my car to become a hall-effect breakerless version, so using one for a 1985 or later model of 8V engine might be the go. I'm also researching where hall-effect components can be sourced from in case something is available via a non-automotive supplier. The coil issue is pretty simple - either it needs to be replaced with one that has a different resistance or it can be used as-is. Will determine that as I go. The electronic ignition module will be interesting. Apart from the Saab (ie. Bosch) one and it's 3rd-party copies, there are other ways to go here. I've seen some commercial units that I found via some googling. Also, there are projects for breakerless ignition systems which have been featured in electronics hobby publications both here in Australia and in other countries, but the big issue with any of this still comes back to dealing with either replacing or retro-fitting the existing distributor. I'm a die-hard electronics enthusiast so constructing an electronic ignition kit is no drama... As any example of something available locally in Australia, check out the Jaycar Electronics kit # KC-5247 at this link: http://www1.jaycar.com.au/productView.asp?ID=KC5247&CATID=25&keywords=&SPECIAL=&form=CAT&ProdCodeOnly=&Keyword1=&Keyword2=&pageNumber=&priceMin=&priceMax=&SUBCATID=347 Being in Australia and supportive of our local electronics enthusiast community, I would prefer to build one of those kits and install it in my car in preference to buying a commercial solution, unless the commercial solution comes with the parts to retro-fit the existing distributor and these part aren't easily obtainable from any other source. 8-) Regards, Craig. -- Craig Dewick - craignospamlet.apana.org.au - Founder/maintainer of the SunShack at www.sunshack.org - Operator of Jedi (an APANA Sydney PoP) - please visit www.jedi.apana.org.au or www.sydney.apana.org.au for more detailed information Lover of SpamAssassin - high quality open-source spam killing for the masses!

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