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1967 - 1972 F-100 & Larger F-Series Trucks Discuss the Bumpsides Ford Truck

Pertronix Distributor Drive Question

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Old Dec 12, 2017 | 09:45 PM
  #31  
Tedster9's Avatar
Tedster9
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From: Waterloo, Iowa
You might tie a loose knot in the coil wire. Seriously. It's a bit long, this is known to cause excess RFI. Or find a shorter coil wire.

I don't know how much it matters, but coil manufacturers recommend their oil-filled coils when mounted horizontally as here should be oriented so that the terminals are at 3 and 9, not 12 and 6. Something about keeping the windings well covered in oil.
 
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Old Dec 12, 2017 | 10:00 PM
  #32  
1968 F250camper's Avatar
1968 F250camper
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Joined: Apr 2004
Posts: 197
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From: Chicagoland Metro area
I will see if I have a shorter coil wire, or as you say, tie a loose knot in this one. I will also rotate the coil as well to a 9/3 position. I had not heard of either of these issues...until now. Appreciate the info.
 
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Old Dec 13, 2017 | 07:45 AM
  #33  
orich's Avatar
orich
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Joined: Aug 2003
Posts: 7,592
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From: **** hole San Jose ca.
Originally Posted by Tedster9
You might tie a loose knot in the coil wire. Seriously. It's a bit long, this is known to cause excess RFI. Or find a shorter coil wire.

I don't know how much it matters, but coil manufacturers recommend their oil-filled coils when mounted horizontally as here should be oriented so that the terminals are at 3 and 9, not 12 and 6. Something about keeping the windings well covered in oil.
I know that the Acel & Msd oil filled coils says to mount the Msd Blaster ll vertical per the mounting instructions with coil-wire facing up.

The Blaster ll has a high track record of failures when mounted Horizontally.

My oil filled Msd Blaster ll lasted all of 300 miles.

The spark plugs & coils that have a ridged ring around where the spark plug slides down over them is known as spark Damn since spark travels in a straight line that aides on most all high out put coils & spark-plugs.
Orich
 
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