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Old 02-29-2008, 10:48 AM
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karmat karmat is offline
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Join Date: Aug 2004
Location: Portland, OR
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Quote:
Originally Posted by ToonRboy View Post
Right and wrong karmat. Multi-spark is just another way of increasing spark duration - which helps burn the mixture at lower rpms. After 3k rpm there's no time for that. The Stock Alfa ignition is (if you read any of the info) kind'ave a hybrid. Inductive discharge with hall sensor. Seems to do perfectly fine up to around 7k rpm - as Autodelta didn't change it on their race engines, that's good enough for me. So, if you actually were running to 9k rpm, a CDI (MSD) would be better than stock.
Yeah, that's what I meant when I said "CDI helps keep the coil firing well at that rpm but you only get that and not multi-sparl [sic]." Meaning at high RPM. Otherwise the coil dwell is to short and you get weak spark. CDI does help that. I do know how ignition systems work.

And no argument: the stock system is a good one, I'm not ripping it out. It seems capable of firing almost any near decent mixture at the RPMs I can run. If it ever comes out it will be in favor of a fully programmable system.

Karl
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[B]Have:[/B] 1969 1750 GTV under restoration
1969 1750 Berlina
1968 Giulia Sprint GTV (very rough, no motor)
[B]Had:[/B] 1982 GTV6 3.0 w/4.10 rear, Stebro (imported engine from UK in 2002) -- Rear-ended 8/2004.
1988 Milano Verde
[B]Non-Alfas:[/B]1984 Volvo 244
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