factory coils
GM LS coils The GM coils 580 & 585 we make are not able to be sold to the public.
These are very good coils with rare earth magnet fitted @ 85mj. output.
Many users will find this coil in a wreaking yard at a great price.
This coil is good for 16.lbs boost or 100 HP NOS
We do have an improved GM coil family (10%) that are sold into the aftermarket.
This includes a GEN-IV coil.
Some here will fit the IGN-1A coil with LS brackets and Sub Harness.
Lance
These are very good coils with rare earth magnet fitted @ 85mj. output.
Many users will find this coil in a wreaking yard at a great price.
This coil is good for 16.lbs boost or 100 HP NOS
We do have an improved GM coil family (10%) that are sold into the aftermarket.
This includes a GEN-IV coil.
Some here will fit the IGN-1A coil with LS brackets and Sub Harness.
Lance
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Bit of a strange post Lance ?
Are you saying you do a non GM 585 coil...but nobody can buy it ? Or that you do actually supply the 585's to GM ?
And the 16lb comment is also a little odd when you know they'll do much more ?
Are you saying you do a non GM 585 coil...but nobody can buy it ? Or that you do actually supply the 585's to GM ?
And the 16lb comment is also a little odd when you know they'll do much more ?
KW
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Source of OEM GM coils 2nd hand My experience, as part of the modern DIS inventor team, is to help users here find quality coils at low cost.
My guess is that some here may "find" the correct requested coil "585" at a scrap yard for low cost.
Thus the scope of this thread.
As for MY opinion on coil output, this is based on the average comments by users of a specific coil, math based on mj output, other independent testers like Jala (J Lane, Finland) who has done his own testing using a "pico" load, and empirical testing using my CO-2 pressure chamber.
Would there be a specific coil test wanted, tested in my eight channel CO-2 chamber ?
Lance
My guess is that some here may "find" the correct requested coil "585" at a scrap yard for low cost.
Thus the scope of this thread.
As for MY opinion on coil output, this is based on the average comments by users of a specific coil, math based on mj output, other independent testers like Jala (J Lane, Finland) who has done his own testing using a "pico" load, and empirical testing using my CO-2 pressure chamber.
Would there be a specific coil test wanted, tested in my eight channel CO-2 chamber ?
Lance
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Verdad Gallardo 9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
Again, to the end users, the real people....the only test we want to know is what will allow is to produce the best power on our engines.
What happens in a test chamber elsewhere....I would have to say really doesnt matter to me as any results from it would mean nothing to me.
That isnt to say such tests mean nothing, they just arent relevant to the public.
I did change to the 1A's a few months ago, but TBH really didnt feel any difference vs the 514's I had been using. But I guess there is some peace of mind there too whether I feel anything or not.
What happens in a test chamber elsewhere....I would have to say really doesnt matter to me as any results from it would mean nothing to me.
That isnt to say such tests mean nothing, they just arent relevant to the public.
I did change to the 1A's a few months ago, but TBH really didnt feel any difference vs the 514's I had been using. But I guess there is some peace of mind there too whether I feel anything or not.
Ignition Coils IGN-1A OK, the installation of eight IGN-1A onto a LS-x IS what you stated, done to your car.
MY questions :
Did you use my brackets ?
Did you fit new wires ?
What brand of wires ?
Did you replace sparkplugs gaped @ .060" ?
Did you change dwell settings ?
Did you ground the coil pack ?
Lance
MY questions :
Did you use my brackets ?
Did you fit new wires ?
What brand of wires ?
Did you replace sparkplugs gaped @ .060" ?
Did you change dwell settings ?
Did you ground the coil pack ?
Lance
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
I had to make my own brackets
I did use new wires, just cheapo Airtex cut to length with same style boots Firecore offer, Ford Explorer or something. I did contact Firecore about new leads to suit but they never replied so needed something to get going.
No I certainly did not gap plugs to 60thou...why would I ?
I'm limited on dwell to 4500us due to wasted spark setup so no need to change
And yes, everything is very much grounded.
I'm not saying the coils do not work, just I noticed no change from the 514's, but then I was not having any problems with them anyway. Both have allowed me to run close to 30psi for standing 1km runs without issue.
I did use new wires, just cheapo Airtex cut to length with same style boots Firecore offer, Ford Explorer or something. I did contact Firecore about new leads to suit but they never replied so needed something to get going.
No I certainly did not gap plugs to 60thou...why would I ?
I'm limited on dwell to 4500us due to wasted spark setup so no need to change
And yes, everything is very much grounded.
I'm not saying the coils do not work, just I noticed no change from the 514's, but then I was not having any problems with them anyway. Both have allowed me to run close to 30psi for standing 1km runs without issue.
Spark Instant with Higher Coil Output Those here and other users who have fitted the IGN-1A LS-x coil kit I make/sell report :
1. A 1.5*/2* lower amount of Spark Advance REQUIRED from 4500 RPM and higher.
2. The average of a 18 HP increase on a 500 hp engine output.
3. A noticed improvement in low speed running and throttle response.
4. NO miss-fire at high boost levels.
The need of "waste spark" dwell is based on RPM when not over 8500 you could run 6ms safely.
The Spark Plug Gap has a great effect on Spark Duration.
The IGN-1A has a LONG Arc Duration which could be wasted at higher RPM with TOO little plug gap.
What is your gap distance ?
What RPM is your peak amount ?
Lance
1. A 1.5*/2* lower amount of Spark Advance REQUIRED from 4500 RPM and higher.
2. The average of a 18 HP increase on a 500 hp engine output.
3. A noticed improvement in low speed running and throttle response.
4. NO miss-fire at high boost levels.
The need of "waste spark" dwell is based on RPM when not over 8500 you could run 6ms safely.
The Spark Plug Gap has a great effect on Spark Duration.
The IGN-1A has a LONG Arc Duration which could be wasted at higher RPM with TOO little plug gap.
What is your gap distance ?
What RPM is your peak amount ?
Lance
Arc Duration/Piston Position OK, .030"@7000 will produce a "firing line" on a Scope TWICE the length needed, the IGN-1A Arc Duration is stated in the coil information on my Site "PanteraEFI.com", look under new products.
Those at Ricardo and others state the Ignition Spark should occur for 30 degrees of crankshaft rotation, I agree with Empirical observation.
This IS based on common R/L and Pin Offset.
I am able to model this using EAP-PRO which I will do for your needs, at no charge.
The same work could easily be done with your old cam/new cam.
Would you like my help ?
The results could be posted here.
Lance
Those at Ricardo and others state the Ignition Spark should occur for 30 degrees of crankshaft rotation, I agree with Empirical observation.
This IS based on common R/L and Pin Offset.
I am able to model this using EAP-PRO which I will do for your needs, at no charge.
The same work could easily be done with your old cam/new cam.
Would you like my help ?
The results could be posted here.
Lance
9 Second Club
Joined: Nov 2003
Posts: 13,616
Likes: 185
From: Norn Iron
I dont pretend to understand all the ins and outs of this.
It would seem many suggest more dwell=more spark power ? But you're suggesting we should maybe be aiming for a spark duration instead ?
How does the average user actually figure that one out and I assume every setup will be different, especially as you seem to mention plug wires can have a huge effect on this ?
I do have a cheap scope and an inductive clamp, although never did manage to get any readings from it. I'll be pulling the car apart soon anyway so it'll be a few months before it's going again anyway.
It would seem many suggest more dwell=more spark power ? But you're suggesting we should maybe be aiming for a spark duration instead ?
How does the average user actually figure that one out and I assume every setup will be different, especially as you seem to mention plug wires can have a huge effect on this ?
I do have a cheap scope and an inductive clamp, although never did manage to get any readings from it. I'll be pulling the car apart soon anyway so it'll be a few months before it's going again anyway.
Arc Duration/Piston Position OK, coil energy is based on the ability of the coil to store energy. (electrons)
This is augmented by Coil Dwell.
The IGN-1A coil will "fill" at 9ms dwell @ 14 volts becoming a DEAD SHORT and thus fry the coil/internal IGBT.
There is also a Duty Cycle requirement 88% max AND includes "firing time" or Arc Duration for best operation.
The Spark Duration NEEDS to match piston position, this is RPM dependent.
Simple math can solve this problem.
The basic factors such as R/L, RPM, SPW Resistance, Plug Gap values need to be included.
The Scope you have should show the Firing Line length.
You could test a Firecore 50/Firecore 250 wire.
Lance
This is augmented by Coil Dwell.
The IGN-1A coil will "fill" at 9ms dwell @ 14 volts becoming a DEAD SHORT and thus fry the coil/internal IGBT.
There is also a Duty Cycle requirement 88% max AND includes "firing time" or Arc Duration for best operation.
The Spark Duration NEEDS to match piston position, this is RPM dependent.
Simple math can solve this problem.
The basic factors such as R/L, RPM, SPW Resistance, Plug Gap values need to be included.
The Scope you have should show the Firing Line length.
You could test a Firecore 50/Firecore 250 wire.
Lance