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Old 02-21-2003, 09:01 AM
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Question looking for knock triggered ignition retard control

Way back in '98 either hotrod mag or carcraft had an article where they built a forced iduction engine. they used a (then) new aftermarket timing box hooked inline with the msd 6btm.
the box came with a knock sensor. now instead of reducing the entire timing when the box detected a ping, it only retarded timing on that cylinder.
it had a retail of $400 or $500.

Does ANYONE remember what the box was or who made it, and where can I get one???

I have been looking forever, google turns up trash. <img src="graemlins/crash.gif" border="0" alt="[crash]" />

please email me with info at kornnutz@resago.com

Thanks!
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Old 02-21-2003, 02:43 PM
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I thought that once there was a sign of detonation being detected by the sensor, combustion has already taken place. Wouldn't it be too late to delay the spark? I would think detonation is getting detected on one cylinder, and retarding the spark on the succeeding cylinder. This is an honest question.
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Old 02-21-2003, 03:30 PM
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Wink

it adjusts timing for the next revolution.
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Old 02-21-2003, 03:31 PM
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anyway, I think I found it, its made by J&S, the product is called safeguard.
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Old 02-21-2003, 03:59 PM
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[quote]Originally posted by resago:
<strong>it adjusts timing for the next revolution. </strong><hr></blockquote>

And how would that make it any different from any other delay module?
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Old 02-21-2003, 04:02 PM
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as described in the first post, it retards timing for that cylinder only, not all. it lets each cylinder operate at its optimal timing.
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Old 02-21-2003, 04:16 PM
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Right, so unless you're saying that it magically predicts when detonation is going to occur on any given cylinder, it detects detonation in one cylinder firing event and retards the timing on the next cylinder to fire.

Again, how would that make this module different from any other?
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Old 02-21-2003, 04:19 PM
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no, not the next cylinder, the SAME cylinder.
it counts the spark and only retards that SAME cylinder on the next firing stroke.
see how that differs from every other system?

[ February 21, 2003: Message edited by: resago ]</p>
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Old 02-21-2003, 04:30 PM
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Okay, now I get it, so it mantains a different degree of advance for each individual cylinder to compensate for uneven air fuel distribution etc.

Sounds like it would release a little hidden power, and extend the life of the motor theoretically.
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Old 02-21-2003, 04:31 PM
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yeah, you got it. its expensive though.
heres the website

http://www.jandssafeguard.com
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Old 02-21-2003, 04:41 PM
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What are you going to put it on?
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Old 02-21-2003, 06:18 PM
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http://camaro.resago.com
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Old 02-09-2006, 11:36 AM
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link changed if anyone is interested.
resago's camaro
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Old 02-10-2006, 01:01 AM
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GM vehicles used to have a system that altered the timing in an HEI with a stand alone module and sensor. If you find a 5 prong HEI module in a wrecking yard vehicle, that's the one. It has the 5 prong HEI module, wiring to the box, the box, wire to the sensor in the water jacket. Easy wireup, and it works.
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Old 02-10-2006, 02:51 AM
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Doc here,

This module here?



Doc
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