Re: Ignition box -- S-10crewcab.com

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Subject: Re: Ignition box

Author:
HenryJ

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Date Posted: 16:30:41 08/29/02 Thu
In reply to: Wrager 's message, "Re: Ignition box" on 07:46:47 08/29/02 Thu

I have to say I both agree and disagree.
The GM HEI is great up to 7000 rpm with a hotter coil and all most will need.
The "idea" behind the MSD is to have multiple sparks to create a more complete burn, benifits can be better mileage and performance. This works if you are not getting a good burn now.
A good racing engine is designed for a complete burn and may see very little , if any improvement from the MSD.
I would NOT recommend MSD on a "Boosted" engine only naturally aspirated. The last thing you want on a supercharged engine is multiple sparking. It is a good way to back-fire a blower.
I run a Mallory Hyfire on my HenryJ, it is a hot long duration spark, instead of multiple.
Under boost it does take a good ignition to fire in the dense fuel mix, I have to run a gap of .028 to ensure it will fire at 15:1 compression. (10% overdriven at the track)
JMHO , Peace :)

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Replies:

Subject	Author	Date
Re: Ignition box	P.S. NITROUS	20:39:52 08/29/02 Thu