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Couple of Coil Questions
#1
Is there any way to test a coil for function?
There have been issues with the engine running
poorly and it does not seem to be a fuel delivery
problem. Bought new ignition wire set so I decided
to buy a new coil, why not. Everything from the coil
to the plugs is now new waiting to be installed.
What is the difference between oil filled and epoxy
as to application? The one I just got is epoxy filled.

mike

[Image: 1_11_11_13_11_50_27.png]
  Reply
#2
From the 'net:

Testing an Ignition Coil

[Image: bikrdg.jpg]

The epoxy-filled ones allow better high heat, vibration or non-vertical installs.

Hope this helps.

Ray

1971 Boss 351  
1972 Q code 4 speed convertible 
1971 Mustang Sportsroof  351-2V FMX 
1973 Mach 1 (parts car)
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#3
Original points style coils are different than high output ignition coils. The pertronix I works with oem points coil. the blaster coils work wih pertronix II and III and MSD type ignitions and their magnetic pickups. They are not interchangable. The manufacturers are getting better at spelling out the differences.
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#4
Boss1Ray;129044 Wrote:From the 'net:

Testing an Ignition Coil

[Image: bikrdg.jpg]

The epoxy-filled ones allow better high heat, vibration or non-vertical installs.

Hope this helps.

Ray

Yes, Thanks.
Tested the old coil and it tested fine.
Replaced it anyway.
The resistance between pos and neg poles
was 1.5 on both old and new. Resistance
from center post to either pole was 10k on both.
This was measured with a Fluke.

The car started Cool

mike

[Image: 1_11_11_13_11_50_27.png]
  Reply
#5
goodnigh;129055 Wrote:
Boss1Ray;129044 Wrote:From the 'net:

Testing an Ignition Coil

[Image: bikrdg.jpg]

The epoxy-filled ones allow better high heat, vibration or non-vertical installs.

Hope this helps.

Ray

Yes, Thanks.
Tested the old coil and it tested fine.
Replaced it anyway.
The resistance between pos and neg poles
was 1.5 on both old and new. Resistance
from center post to either pole was 10k on both.
This was measured with a Fluke.

The car started Cool

mike

So if it is still running poorly-
are you now thinking fuel issue?

Ray

1971 Boss 351  
1972 Q code 4 speed convertible 
1971 Mustang Sportsroof  351-2V FMX 
1973 Mach 1 (parts car)
  Reply
#6
This is interesting. I have my original oil filled coil and am using Pertronix II.
Am I doing some damage with this setup?


wwhite72;129046 Wrote:Original points style coils are different than high output ignition coils. The pertronix I works with oem points coil. the blaster coils work wih pertronix II and III and MSD type ignitions and their magnetic pickups. They are not interchangable. The manufacturers are getting better at spelling out the differences.

Greg
  Reply
#7
Boss1Ray;129067 Wrote:So if it is still running poorly-
are you now thinking fuel issue?

Ray

Not sure what is the next step.
Will be replacing the spark
plugs and wires. A couple of the
connectors we checked were green
and corroded.

mike

[Image: 1_11_11_13_11_50_27.png]
  Reply
#8
http://www.pertronix.com/prod/ig/flame/coils/chart.aspx This is the pertronix detail on coils and modules. I believe the reverse is what causes damage, putting higher output thru points or Ptrnx I, and you would expect. When i had personal experience with this problem Pertronix only had the one product on the market P II had not been introduced. You just popped in the module to replace the points and everythin worked great and you only paid $50 bucks. I stupidly installed a higher output coil 6 mos later and caused problems that resulted in a failed module and a blown power valve on the Holley. Im guessing you're fine with the original coil but the chart gives specs.
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#9
wwhite72;130199 Wrote:http://www.pertronix.com/prod/ig/flame/coils/chart.aspx This is the pertronix detail on coils and modules. I believe the reverse is what causes damage, putting higher output thru points or Ptrnx I, and you would expect. When i had personal experience with this problem Pertronix only had the one product on the market P II had not been introduced. You just popped in the module to replace the points and everythin worked great and you only paid $50 bucks. I stupidly installed a higher output coil 6 mos later and caused problems that resulted in a failed module and a blown power valve on the Holley. Im guessing you're fine with the original coil but the chart gives specs.

I hope the problems I am having are not because of a blown power
valve. The Holley is <two years old and I thought that issue was
fixed by Holley. What are the symptoms of a blown power valve?
We noticed corrosion on some of the spark plug wires which are 8mm
Taylor and three years old. Could a high energy coil (Pertronix) affect
wear and tear on the wires?

mike

[Image: 1_11_11_13_11_50_27.png]
  Reply
#10
there are some very experienced carb guys on this site who can offer opinions on yer holley. or you can check the holley site, they give details on checking the power valve on your carb. i tend not to think 3yr old 8mm wires would be the source of your poorly running engine, unless one or more got melted or something. of course 'green and corroded' doesnt sound good but connectors can be replaced on a lot of 8mm wires depending on the mfg. or even brushed up and dialectal greased for shot at inexpensive fix.
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