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Duraspark II Conversion - How To

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  #46  
Old 02-03-2014, 12:31 AM
Sean_Reno Sean_Reno is offline
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85 F150 I6-300: Any help...what vehicles can I get the DS II Harness off of??
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  #47  
Old 02-04-2014, 12:59 AM
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The one I got came off a 83 F150 4.9

I believe the 4.9 came in alot of vehicles. I would check any truck, van made in 1983 and prior. But some of these were EEC or some hybrid or something back in 1980 for California vehicles.
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  #48  
Old 02-04-2014, 01:08 AM
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That's what I'm encountering hybrids, etc (82, 83 or so)...I'm not sure how early I can go back 78, 79 or how late you can go(83)/cant I also use a V8 harness too...will any harness hooked-up to a Blue module work???????
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  #49  
Old 02-04-2014, 02:47 AM
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I dont know about the V8 harnesses but your right with the blue module.

I dont know how early either but the latest you can go is 1983 for any 4.9 300 engine. After that its a nogo because my 1984 F250's with inline 6's are EEC IV and the F150 would be too. 1983 was the last year for the Duraspark 2 ignition for the 4.9 Inline 6. 1984 on for the Inline 6's are fully computer controlled with the EEC IV.

Only thing I can think of, is would to be double check those 82 and 83's. You never know, someone could have replaced something with the wrong part like the carb and distributor and make it appear like an California truck. I would double check the wire harness and examine it closesly if I were in the junkyard again. Its a long shot thou.

Someone here should be able to tell you about those late 70's models and the V8 harnesses.
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  #50  
Old 02-04-2014, 02:55 AM
Sean_Reno Sean_Reno is offline
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My 85, is a California Truck (I'm in Nevada). Most of the trucks around here, are California Emissions. I'll keep looking.
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  #51  
Old 02-04-2014, 02:10 PM
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I believe the DuraSpark II started somewhere around 75 or 76, so you are safe to at least go back to the late 70s. In the 70s trucks, the ignition module was bolted to the fender, instead of the plastic wheel well.
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  #52  
Old 02-04-2014, 02:18 PM
Sean_Reno Sean_Reno is offline
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Quote:
Originally Posted by AbandonedBronco View Post
I believe the DuraSpark II started somewhere around 75 or 76, so you are safe to at least go back to the late 70s. In the 70s trucks, the ignition module was bolted to the fender, instead of the plastic wheel well.
I'm mostly interested in finding a harness. Will a V8 harness work...will a harness out a Bronco work (on a F150)...what other vehicles can I look at??
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  #53  
Old 02-04-2014, 03:05 PM
1986F150six 1986F150six is offline
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Ford vans for sure.

Don't forget Granadas, Mavericks, Mercury Monarchs and Comets. They had small block six cylinders [200 and 250], but the ignition wiring might be close enough in length to work.
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  #54  
Old 02-04-2014, 08:07 PM
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Anything that came with the 300 will work (Broncos, F-150s, 250s, 350s, etc.) if it has the DuraSpark II. They're all the same.

As for the V8, I *think* they'll work but I can't tell you for sure. I also have no clue on if one from a small six would work either. It'd be interesting if someone could confirm that.

But, the easiest way I've found is just to walk down the junk yard line and look under all the hoods until I find a 300 without all the feedback wiring.
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  #55  
Old 02-04-2014, 10:04 PM
Sean_Reno Sean_Reno is offline
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Quote:
Originally Posted by AbandonedBronco View Post
Anything that came with the 300 will work (Broncos, F-150s, 250s, 350s, etc.) if it has the DuraSpark II. They're all the same.

As for the V8, I *think* they'll work but I can't tell you for sure. I also have no clue on if one from a small six would work either. It'd be interesting if someone could confirm that.

But, the easiest way I've found is just to walk down the junk yard line and look under all the hoods until I find a 300 without all the feedback wiring.
Belive me, I've looked under all the hoods LOL...very few vehicles in my local Pick-N-Pull that old and finding one with an I6 is very rare.
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  #56  
Old 02-04-2014, 10:08 PM
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The concern with the different engines is with the lengths of the various wires. For example, the I-6 has the oil-pressure sender way in the back on the passenger side; the 460 and 351M/400 have it on the back-center behind the intake manifold; the 302 & 351W have it down near the oil filter.

There are similar differences with the water temperature sender, proximity of the coil to the distributor, etc.

But the ignition system hooks up the exact same way in all cases... just the wiring lengths are different.
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  #57  
Old 02-04-2014, 10:18 PM
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Originally Posted by ctubutis View Post
The concern with the different engines is with the lengths of the various wires. For example, the I-6 has the oil-pressure sender way in the back on the passenger side; the 460 and 351M/400 have it on the back-center behind the intake manifold; the 302 & 351W have it down near the oil filter.

There are similar differences with the water temperature sender, proximity of the coil to the distributor, etc.

But the ignition system hooks up the exact same way in all cases... just the wiring lengths are different.
I6 it is then.
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  #58  
Old 02-04-2014, 10:21 PM
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BTW it first appeared in 1977 so if you're lucky enough to find cars or trucks from that era....
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  #59  
Old 02-04-2014, 10:28 PM
Sean_Reno Sean_Reno is offline
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Originally Posted by ctubutis View Post
BTW it first appeared in 1977 so if you're lucky enough to find cars or trucks from that era....
So, anything w/the I6-300 (vans, Broncos, F-Series) will be a direct fit?
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  #60  
Old 02-04-2014, 10:45 PM
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Quote:
Originally Posted by Sean_Reno View Post
I6 it is then.
Wires that are too long can have the excess coiled up and zip-tied.

Wires that are too short can be lengthened - get yourself a soldering iron, some solder, and some heat-shrink tubing and learn how to solder (lots of youtube videos and instructional stuff on the 'net for that) if you don't know how.

DO NOT use butt-type crimp connectors, DO NOT use (electrical) tape, none of that type of wiring is weather/gas/oil/dirt/crud-resistant and you WILL eventually have no-start or poor-running problems if you go that route, it's guaranteed.

Point being, given that these things are hard to find, use what you can get and adapt as necessary.
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