((any wasted-spark type. Low 1..2 msec dwell preferred)
GM DIS coils
- 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
- yesterday I bought 2 sets ( each set contains 3 coils ) of GM coils from a local junkyard I will try to take some pics
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.
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%
FORD EDIS coils
any stock ford EDIS coil 4,6 or 8 cylinders
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
Accel # 140018
( FORD EDIS type )
- Specifications
- Primary resistance: .5 ohms
- Secondary resistance: 11.6k ohms
- Turns ratio: 85:1
- Maximum voltage: 42,000 volts
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
M&W Double Post Coil
do you know any other waste spark coils ?
return to