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> Used Compu-Fire or Used Pertronix?, Which used ignition module should I use?
jcd914
post Apr 24 2019, 05:02 PM
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I have 3 used pointless ignition modules that came with one of my parts cars or project.
First 2 are Compu-Fire units, one loose in a box of other stuff and one in the distributor on an engine.
3rd is a Pertronix unit that was loose in a box of other stuff.

I don't actually know if any of them work but the engine that one of them is in was supposedly running on mega-squire before it was pulled from the car.
I am looking to put one of these into my 2.0l D-jet engine which is running solid core copper plug wires.

I have no recent experience with pointless ignition in a 914 but there are no points in my engine now and I need something and I have these.

Thoughts?

Thanks
Jim
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worn
post Apr 24 2019, 05:42 PM
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QUOTE(jcd914 @ Apr 24 2019, 03:02 PM) *

I have 3 used pointless ignition modules that came with one of my parts cars or project.
First 2 are Compu-Fire units, one loose in a box of other stuff and one in the distributor on an engine.
3rd is a Pertronix unit that was loose in a box of other stuff.

I don't actually know if any of them work but the engine that one of them is in was supposedly running on mega-squire before it was pulled from the car.
I am looking to put one of these into my 2.0l D-jet engine which is running solid core copper plug wires.

I have no recent experience with pointless ignition in a 914 but there are no points in my engine now and I need something and I have these.

Thoughts?

Thanks
Jim

I suppose it will come down to personal preference along with how many of the three actually work. I have a pertronix unit in my TR6 and trust it, but that is a considerably cooler environment hanging on the side of a water cooled block than sitting on top of air and oil cooled 914. I think that I killed one by reverse polarity, so watch out for that.
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IronHillRestorations
post Apr 25 2019, 07:11 AM
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I'm not a fan of Pertronix, I wish I had better luck with them. I think the idea is great, but I recently lost money putting a whole new Pnix ignition system in a customer's 914 and the ignitor went bad in less than 500 miles
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jonferns
post Apr 25 2019, 07:28 AM
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Still running the same Pertronix unit that was installed in the late 90’s, without issue. Not sure if the newer units are any less reliable.
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rfinegan
post Apr 25 2019, 07:53 AM
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Compufire is big on air cooled Harleys

I have on one my 1.8 75 914 and no problems
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Bleyseng
post Apr 25 2019, 08:20 AM
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I am putting in a new pertronix today as I had a old guy moment and wired the old one backwards killing it. (IMG:style_emoticons/default/mad.gif)
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Johny Blackstain
post Apr 25 2019, 08:40 AM
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I use the Pertronix in my LE however I replaced the coil, also with Pertronix, to match the module voltage-wise. Been fine for 12 years now. (IMG:style_emoticons/default/cool_shades.gif)
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Spoke
post Apr 25 2019, 08:41 AM
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I've used Pertronix in 2 different 914's without issue.
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krazykonrad
post Apr 25 2019, 08:41 AM
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Are Compu-fire and Pertronix compatible with the D-Jet contacts on the distributor?
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Spoke
post Apr 25 2019, 08:42 AM
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QUOTE(krazykonrad @ Apr 25 2019, 10:41 AM) *

Are Compu-fire and Pertronix compatible with the D-Jet contacts on the distributor?


The D-Jet contacts on the distributor are independent of the points/Pertronix. As a matter of fact, the entire D-Jet system is independent of the points.
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Johny Blackstain
post Apr 25 2019, 08:43 AM
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QUOTE(krazykonrad @ Apr 25 2019, 10:41 AM) *

Are Compu-fire and Pertronix compatible with the D-Jet contacts on the distributor?

Pertronix is, LE is D-jet
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dr914@autoatlanta.com
post Apr 25 2019, 03:50 PM
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comp u fire seems to handle the heat better on the air cooled engines than pertronix, but is a bit harder to fit
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Mark Henry
post Apr 26 2019, 05:44 AM
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I have a compufire on a 009. I tried on my T1 in my '67 bus, couldn't get rid of a miss.
Ended up yanking it and now use a mallory with a pertronix.

I don't know if it was a 009 or compufire issue, I still have it kicking around, but haven't looked at it in 15 years.
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914werke
post Apr 26 2019, 03:43 PM
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BTW Compufire owns the Pertronix brand ...or vica versa
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jcd914
post Apr 26 2019, 03:59 PM
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Thanks for all the information all.

I actually chose not to use either right now and put a set of points back in it.

The engine has not been run for several years.
@ConeDodger Rob, how long ago did you give me the engine back?
I just rewired a lot of the car, re-plumbed the fuel system and installed the engine.
I figured that having one less unknown electronic unit in the mix would be smart.
If it does not start I won't be wondering if it is a bad ignition module.

After I address any FI or wiring issues and get it running I can swap in one of the units.

Thanks
Jim
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ConeDodger
post Apr 26 2019, 04:08 PM
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Jim I think three years or more? I left it at Original Customs for you to pick up...
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jcd914
post Apr 26 2019, 05:18 PM
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QUOTE(ConeDodger @ Apr 26 2019, 03:08 PM) *

Jim I think three years or more? I left it at Original Customs for you to pick up...


I remember picking it up at an event there but don't remember when or what the event was.
It might run this weekend!
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