== GM DIS coils ==

http://198.208.187.182/servlet/com.entigo.acdelcocatalog.servlet.ProcessImageServlet?languagecd=EN&countrycd=US&user=InternetUser&mfgname=&prodlinecd=&acpartnbr=D555

* was used in 1000s of cars from mid 80s - present

::Isuzu 92 - 94

::Cadillac 93 - 95; 87 - 88

::Chevrolet87 - 94

::Chevrolet/GMC Truck 92 - 94

::Buick 86 - 95

::Oldsmobile 86 - 95

::Pontiac 87 - 95

* different part numbers

::10495121, 10497771

::10472401, 10468391

::1103608, 1103646

::1103744, 1103745, 1103746

::1103662, 1103663

::D539, D540, D555

* you can buy them from any GM or AC delco dealer or

http://www.cntianhai.com/en/products/dhxq.htm

http://www.march-inc.net/gm.htm

* there is a company called Delteq that sells a wasted-spark conversion for chevy LT1 optiJUNK distributor and their kit contains GM ( AC Delco ) D555 coils

: http://www.delteq.com/products_opti.htm

: http://www.delteq.com/support.htm

** yesterday I bought 2 sets ( each set contains 3 coils ) of GM coils from a local junkyard I will try to take some pics

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== MSD Ignition # 8224 ==

( GM DIS type )

* Specifications

::Primary Resistance: 0.35 ohms

::Secondary Resistance: 7.8K ohms

::Maximum Voltage: 40,000 volts

::Inductance: 4.2 mH

::Turns Ratio: 80:1

*This coil looks nice. 12.6V over the primary (14V VBatt - 1.4V drop on IGBT) means roughly 12.6V/4.2mH=3A/msec current rampup slope. 2msec dwell (6A peak) looks like a good starting value, and it should probably bear 3msec (9A peak current) at 14V VBatt.

*each one costs about $40. I like it, maybe we could stock them in WebShop, some on each continent. At least I cannot get good wasted-spark coils for $40 locally (old continent) in small quantities.

* check http://store.summitracing.com/default.asp?target=partdetail.asp&part=MSD%2D8224&view=1

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== Accel # 140017 ==

( GM DIS type )

* Specifications

::Primary Resistance 0.5 Ohms

::Secondary Resistance 8.0 k Ohms

::Turns Ratio 75 : 1

::Maximum Voltage 45,000 volts

::Peak Increase in Energy vs. OE 11%

::Peak Increase in Voltage vs. OE 10%

::Peak Increase in Dwell vs. OE 21%

::Peak Increase in Current vs. OE 12%

* check http://store.summitracing.com/default.asp?target=partdetail.asp&part=ACC-140017

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== FORD EDIS coils ==

any stock ford EDIS coil 4,6 or 8 cylinders

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== MSD Ignition # 8241 ==

( FORD EDIS type )

* Specifications

::Maximum Voltage 40000

::Turns Ratio 83:1

::Primary Resistance 0.530 ohms

::Secondary Resistance 12.8 ohms

::Inductance 5.8 mH

* check http://store.summitracing.com/default.asp?target=partdetail.asp&part=MSD-8241

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== Accel # 140018 ==

( FORD EDIS type )

* Specifications

::Primary resistance: .5 ohms

::Secondary resistance: 11.6k ohms

::Turns ratio: 85:1

::Maximum voltage: 42,000 volts

*check http://store.summitracing.com/default.asp?target=partdetail.asp&part=ACC-140018

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== 034efi waste spark coil ==

* Specifications

::Powerful ignition coil

::easily capable of 45kV output

::Compact design for use 4 cylinder and 8 cyli

::waste spark applications

::Universal high tension lead connectors

::3-wire connector, included

::Price- $75 each plus shipping.

::Price- MSD coil lead connector with boot - $4 each

*check http://www.034efi.com/components.html

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== M&W Double Post Coil ==

* check http://www.bmepfuelandtuning.com/html/m_w_ignitions.html

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do you know any other waste spark coils ?

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