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Antique Gas Engine Discussion

T-Coil


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  #1  
Old 08-16-2005, 09:53:00 AM
Bob Fultz Bob Fultz is offline
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Default T-Coil

What's your opinion of using a resistor plug on a T-coil or will it over load the coil?
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  #2  
Old 08-16-2005, 11:33:55 AM
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Elden DuRand Elden DuRand is online now
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Default Re: T-Coil

Quote:
Originally Posted by Bob Fultz
What's your opinion of using a resistor plug on a T-coil or will it over load the coil?
Bob:

No.

Take care - Elden
http://home.cybertron.com/~edurand
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Old 08-16-2005, 01:15:48 PM
Bob Fultz Bob Fultz is offline
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Default Re: T-Coil

Sorry I didn't grab the answer. (1) Don't use them or (2) It won't hurt the coil. Thanks....Bob
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Old 08-16-2005, 03:21:24 PM
Joe Morris Joe Morris is offline
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Default Re: T-Coil

Bob, I don't know about the damage to a resistor plug. My question is why do you need to use a restistor plug? Enlighten us a little more on the plug use. Joe Morris
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Old 08-16-2005, 04:19:39 PM
Chuck Woycke Chuck Woycke is offline
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Default Re: T-Coil

i think they use res. plugs to dampem the static electricy so you will not hear it on your radio.years ago the plug wires had copper wires with regular plugs that made your speakers crackel.so they came out with resistor plugs.in 1974 gm came out with their electronic ignition (hei) they switched to 7-8mm wires with carbon or graphite cores that replaced the resistor plugs.on my 1974 R90s bmw motorcycle they use resistor end caps in the plug wires .some coils are made to use resistors in their circuits to protect the coils-chuck
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Old 08-16-2005, 05:16:24 PM
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Mike Monnier Mike Monnier is offline
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Default Re: T-Coil

Chuck is correct, the only reason for resistor plugs is to cut down on EMI. Even the plugs you buy for your lawnmower these days are resistor plugs. I'm not sure why since there aren't any electronic devices on a 4hp pushmower.

Bob, are you using one of the pipe thread adapters to use a 14mm plug in your engine? Just curious as to how you could end up with a resistor plug in one of these old engines.
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Old 08-16-2005, 06:21:29 PM
Bob Fultz Bob Fultz is offline
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Default Re: T-Coil

I read where you could use adapters in a T model Ford. The plug they called for is a 14mm Bosh resistor plug. I was wandering if the plug would damage the coil. Ford states not to set the plug gap over .30 The old Champion a35 would carbon up quickly. Thanks for the help...Bob
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Old 08-16-2005, 06:26:15 PM
Andrew Mackey Andrew Mackey is offline
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Exclamation Re: T-Coil

Besides lowering the EMF, Resister plugs fire at a higher voltage - needed to light off the new-fangled unleaded gas. at a leaner mixture. If you are seeking radio noise suppression - forget it! The noise emanated by the timing sparker on the T coil itself will drown any signal generated by the plug by a 1,000 times! If you need the higher ignition temp, say for propane or unleaded usage, a resister plug won't hurt the coil. After all, they used to sell spark -intensifiers! All they were was an air gap in the Hi-tension circut. This increased secondary voltage resistance, and created a hotter spark. (the bigger the gap - the higher the voltage needed to fire!)
Andrew
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Old 08-16-2005, 06:47:57 PM
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Red face Re: T-Coil

Quote:
Originally Posted by Bob Fultz
Sorry I didn't grab the answer. (1) Don't use them or (2) It won't hurt the coil. Thanks....Bob
Bob:

Sorry! I think I had my terseness control turned up a bit too far.

Resistor plugs won't hurt a "T" coil.

jAlso, there's no reason why you can't use 'em if you have a hot coil.

Take care - Elden
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