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Farmall & IHC Tractors Discussion Forum
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electronic ignition kit...how wide can i gap the p

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patpeery

12-20-2004 18:02:20




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this new pertronix ignition kit and oil filled coil i bought state that i can gap my plugs wider. my question is that on my 1953 Super A, what is the original gap and now that i have the new ignition, what can i widen them to? thank you.




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Doug in OR

12-21-2004 10:08:09




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 Re: electronic ignition kit...how wide can i gap t in reply to patpeery, 12-20-2004 18:02:20  
If you carefully read Pertronix's web site, you will find that they recommend that you gap your plugs .005 wider than the original factory spec. Take that for what it is worth.



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captaink

12-21-2004 07:06:41




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 Re: electronic ignition kit...how wide can i gap t in reply to patpeery, 12-20-2004 18:02:20  
Seems to me the original gap was 0.025” on the spark plugs. A wider gap at the plugs will aid in starting, as it will take more voltage to jump the gap, which in theory will also require a “hotter” spark to jump the gap, resulting in a quicker start and smoother idle. The electronic ignition will handle the higher gap in the plugs, I would start experiment with gaps starting with 0.035” and go from there.

Allen is pretty much right on the beam, performance between a well tuned breaker point system will be in line with an electronic system, but the electronic system in theory will remain at peak performance longer and require less maintenance (in theory at least).

Good luck!

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Hayfarmer

12-20-2004 18:18:36




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 Re: electronic ignition kit...how wide can i gap t in reply to patpeery, 12-20-2004 18:02:20  
Have heard guys say with hotter coil you can gap plugs at .045. Others say over about .035 you start hitting diminishing returns. Give it a try. My unserstanding is the wider gap will increase voltage from coil and burn fuel more efficiently.



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Allan in NE

12-20-2004 19:26:18




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 Re: electronic ignition kit...how wide can i gap t in reply to Hayfarmer, 12-20-2004 18:18:36  
Well, I dunno,

A spark is a spark is a spark which torches 'er all off.

Doesn't matter where the ignition comes from either; a feller could use a wooden match if he could get 'er in there at the proper time. :>)

A hotter spark doesn't have a thing to do with how the fuel burns, does not increase power, doesn’t make the fuel burn cleaner nor hotter; actually, electronic ignition doesn't do a darned thing except eliminate the mechanical wear at the points.

I figured it up back in the seventies and at that time it would have taken 78 sets of points to pay for the electronic ignition changeover kit ('course they were new and kinda spendy back then too).

Don't know what it would be now, but still somewhat substantial, I would guess.

Allan

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CNKS

12-20-2004 19:12:22




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 Re: electronic ignition kit...how wide can i gap t in reply to Hayfarmer, 12-20-2004 18:18:36  
I have a "hotter" coil on my GMC pickup, set the gap wider according to the manufacturer's recommendation. Zero increase in performance and it burns up the plugs faster. Waste of money.



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