Petronix coils
Thread Starter
Le Mans Master
Joined: Jan 2001
Posts: 6,938
Likes: 1
From: San Diego CA
Petronix coils
Just installed the Pertronix II flamethrower coil, 
Maximum Voltage 45,000
Turns Ratio 110:1
Primary Resistance 0.600 ohms
Secondary Resistance 10K ohms
Inductance 5.5 mH
Peak Current 7.2 amps
Spark Duration 1.5 mS
And I already had the P-II ignition module but still had the ballast resistor attached. I removed the ballast and installed the new coil and she fired right up on first try! Ususally she sluggisly starts and there has to be some pedal movement involved to start. I think it's not so much the coil but the fact that the ballast is removed which allows the full current load to hit the coil for a greater discharge. I'll see if the car responds better tommorow when I drive her to work.
Maximum Voltage 45,000
Turns Ratio 110:1
Primary Resistance 0.600 ohms
Secondary Resistance 10K ohms
Inductance 5.5 mH
Peak Current 7.2 amps
Spark Duration 1.5 mS
And I already had the P-II ignition module but still had the ballast resistor attached. I removed the ballast and installed the new coil and she fired right up on first try! Ususally she sluggisly starts and there has to be some pedal movement involved to start. I think it's not so much the coil but the fact that the ballast is removed which allows the full current load to hit the coil for a greater discharge. I'll see if the car responds better tommorow when I drive her to work.
Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 213
From: Pittsburgh PA
Are those specs better than these?
Product Line MSD Blaster 2 Ignition Coils
Coil Wire Attachment Female/Socket
Coil Style Canister
Coil Internal Construction Oil-filled
Maximum Voltage 45,000
Turns Ratio 100:1
Primary Resistance 0.700 ohms
Secondary Resistance 4.70K ohms
Inductance 8.0 mH
Peak Current 140 mA
Spark Duration 350 uS
I don't have a P II ignition. Does it matter? My current coil is a MSD Blaster 2.
Product Line MSD Blaster 2 Ignition Coils
Coil Wire Attachment Female/Socket
Coil Style Canister
Coil Internal Construction Oil-filled
Maximum Voltage 45,000
Turns Ratio 100:1
Primary Resistance 0.700 ohms
Secondary Resistance 4.70K ohms
Inductance 8.0 mH
Peak Current 140 mA
Spark Duration 350 uS
I don't have a P II ignition. Does it matter? My current coil is a MSD Blaster 2.
Racer
Joined: Dec 2003
Posts: 411
Likes: 0
From: Arvada CO
Here's a good article link from corvettefaq.com
http://www.corvettemagazine.com/2000...tion/ignp1.asp
http://www.corvettemagazine.com/2000...tion/ignp1.asp
Drifting
Joined: Nov 2002
Posts: 1,665
Likes: 1
From: Ontario
Originally Posted by foundvettelifeisgood
Are those specs better than these?
Peak Current 140 mA
Spark Duration 350 uS
Peak Current 140 mA
Spark Duration 350 uS
It seems to make sense to me that the spark duration of 1.5ms is better (350us is only 0.35ms, 1.5ms is 1500us).
The other parameters like turns ratio, resistances, etc. aren't really different enough to have any significant benefits/drawbacks but I would say 'on paper' the flamethrower is slightly superior.
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Melting Slicks
Joined: Apr 2001
Posts: 2,119
Likes: 213
From: Pittsburgh PA
How about these specs for the Mallory
Maximum Voltage 58,000
Turns Ratio 112:1
Primary Resistance 1.400 ohms
Secondary Resistance 10K ohms
Inductance 6.6 mH
Peak Current 180 mA
Spark Duration 300 uS
Maximum Voltage 58,000
Turns Ratio 112:1
Primary Resistance 1.400 ohms
Secondary Resistance 10K ohms
Inductance 6.6 mH
Peak Current 180 mA
Spark Duration 300 uS
Le Mans Master
Joined: Dec 2003
Posts: 5,727
Likes: 38
From: Fremont CA
Both the MSD and Mallory have higher primary resistance that the Pertronix so, they have a weaker spark as all the coils seem to have the same secondary resistance. I have used Pertronix since they were marketed under the "Perlux Ignitor" brand back in the 1980's and have had excellent performance with their products on all my "vintage" cars (Mustangs included!) The coil in the photo is the "epoxy" coil with no oil that works very well on extreme applications such as off-road "Baja 1000" type applications. I use the epoxy coils for vintage race cars with excellent reliability.
