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Tractor Talk Discussion Forum

Electronic ignition- worth it?

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John S-B

05-24-2005 04:40:14




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I was looking through the parts section here and I noticed they have electronic ignition retro fits for distributors. My Farmall M is running rough and I was wondering if this will make it easier to maintain. I'm not much when it comes to ignition systems, what all is involved with installing one in a standard distributor and does it improve performance/maintenance?




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John S-B

05-24-2005 15:59:51




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 04:40:14  
Thanks for the info guys. How hard is it to install the igniter? The old girl is 60 this year so putting in a electronic ignition is about like grandma getting a hearing aide. Unfortunately I am not retired (or even close) so I don't have time to tinker with the M every week. I need to get on and go. It has a rebuilt carb on it and I had new bushings put in the distributor. Its been about 4 years since plugs, cap, and wires so I thought I'd try those first. I also put in some bushings in the gov. linkage to take out some slop. It's got good compression so hopefully this is something simple. I just have'nt had time to get tune up parts and I thought that while I was at it I'd fix it right.

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Jerry/MT

05-24-2005 20:33:13




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 15:59:51  
You take out the points and give them to the barn mice to play with, drop the Pertronix (or Genessee, which ever you decide to get) over the rotor, remove the screw terminal and lead the wire out through the hole. ( I put an RTV sealant around the grommet to make sure it was waterproof.) Connect them as per the instructions and turn on the key and start it up.



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Phillip Al

05-24-2005 19:33:07




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 15:59:51  
Pertronix has a pretty good website of their own and has a lot of info. I think they may even have installation instructions. We have put them on several forklifts at work and they do work well. They are easy to install and all the customers have been happy not to have points to deal with.



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Jerry/MT

05-24-2005 13:12:57




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 04:40:14  
Contrary to popular opinion, electronic ignition will not increase your horspower relative to a properly tuned conventional ignition. It will eliminate cleaning and adjusting points and provide more reliable starts, that all. And unless you like to piddle around adjusting and cleaning points and changing points, I believe it is worth it. I'd rather be in the seat and working my TO-30 then screwing around with the points.

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PD

05-24-2005 08:58:02




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 04:40:14  
I can tell you from experience that a Pertronix Ignitor will give a Buick 401-425 V-8 about 20 horses, all other things being equal. My old TO-20 Fergie seems to have more oomph as well, though not officially dynoed. I restore/overhaul those old Buicks, and would not even consider putting one back in service without electronic ignition. Decent points are non-existant. But, as mentioned earlier, electronic ignition will do nothing to help a worn-out or poorly maintained engine. As part of an overhaul, restoration or 12-volt conversion, Ignitors are the ONLY way to go. Regards..... .P

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Allan in NE

05-24-2005 11:11:47




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 Re: Electronic ignition- worth it? in reply to PD, 05-24-2005 08:58:02  
Sir,

Now it's my turn 'cause you speaketh the proverbial bunk. :>)

You are mistaken; a spark is a spark is a spark. I don't care if it arrives via a set of points, an electronic ignition system, a plumber's blowtorch or from a common kitchen match.

It just ignites the fire and the origin of said spark does absolutely nothing as far as providing a power increase.

Me thinks you are dreamin'. No disrespect meant. :>)

Allan

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Nolan

05-24-2005 11:19:33




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 Re: Electronic ignition- worth it? in reply to Allan in NE, 05-24-2005 11:11:47  
Not really Allen.

If the spark is weak and feeble, only a few gasoline droplets may be exposed to it. The mixture is far less likely to ignite, and if it does, it combusts late. So you get an engine that splutters and missfires, and has effectively late timing. This gives low power.

A strong spark is larger, and contacts more gasoline droplets. Frequently this spark will last longer, further exposing more gasoline droplets due to the swirling taking place in the combustion chamber. This engine will fire more regularly than the above engine. This gives, among other things, more power as a result.

Now include the degradation that takes place with a set of points...

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buickanddeere

05-24-2005 07:16:06




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 04:40:14  
As previously stated, saves having to mess with points and capacitors. As for increased or variable dwell time,faster switching time and ability to run lower resistance coils? A low rpm four cylinder has more charge time and an easier plug gap to jump. Than a 6000rpm supercharged V8. Contrary to popular belief. Adding electronic ignition, a straight exhaust pipe and premium gasoline. These mods will not make your M out pull a 450.

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genep

05-24-2005 06:19:01




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 04:40:14  
I can tell you from my experience with the Pertronix unit in a car motor that it makes the engine start faster and get better gas maileage than it did with a fresh tune up on points. If your tractor is running bad because of the carburetor, bad plugs or wires, worn distributor shaft, etc, the Pertronix won't fix it.



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Mike M

05-24-2005 06:01:47




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 04:40:14  
I think of them more as a crutch because if everything was in good shape you would not have problems with it in original form. It's only 40 or 50 years old ! and it made it that far on the old systems.



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PD

05-24-2005 09:20:27




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 Re: Electronic ignition- worth it? in reply to Mike M, 05-24-2005 06:01:47  
Sir, with all due respect, you have no idea what you are talking about! I will admit to being the most dedicated purist you will ever find. I really dislike modifications. I would never put an alternator where a generator was, for example. But the fact is that good quality ignition points do not exist. Even AC-Delco points are made overseas. Since 1974 was the last year points were used in GM vehicles, it is fair to say that research and development money for ignition points is small to none. Quality is extremely poor. Points are expensive. I had a '59 Buick hauled into my shop with a freshly, and expensively, rebuilt engine that would not run. Found the new points to be shorted. Installed an Ignitor and I am this man's lifelong hero. Had his engine rebuilt to the tune of $6000 all because someone had installed defective new ignition points (not to mention an auto repair shop that wanted to take their customer to the cleaners.) Some things are available today that really make things easier for older vehicles. Ignitors are at the top of the list. Looks original, and is not detectable by even the best judge. The ONLY way to go. Regards.....P

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Tim...Ok

05-24-2005 05:04:34




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 Re: Electronic ignition- worth it? in reply to John S-B, 05-24-2005 04:40:14  
I run one of the pertronix units in my IH424 gasser and like it real well,no points to mess with,starts super easy..worth the money and real easy to hook up with the instructions it came with..I bought it from this site..

Tim



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