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914World.com _ 914World Garage _ Used Compu-Fire or Used Pertronix?
Posted by: jcd914 Apr 24 2019, 05:02 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
Posted by: worn Apr 24 2019, 05:42 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.
Posted by: IronHillRestorations Apr 25 2019, 07:11 AM
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
Posted by: jonferns Apr 25 2019, 07:28 AM
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.
Posted by: rfinegan Apr 25 2019, 07:53 AM
Compufire is big on air cooled Harleys
I have on one my 1.8 75 914 and no problems
Posted by: Bleyseng Apr 25 2019, 08:20 AM
I am putting in a new pertronix today as I had a old guy moment and wired the old one backwards killing it. 
Posted by: Johny Blackstain Apr 25 2019, 08:40 AM
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. 
Posted by: Spoke Apr 25 2019, 08:41 AM
I've used Pertronix in 2 different 914's without issue.
Posted by: krazykonrad Apr 25 2019, 08:41 AM
Are Compu-fire and Pertronix compatible with the D-Jet contacts on the distributor?
Posted by: Spoke Apr 25 2019, 08:42 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.
Posted by: Johny Blackstain Apr 25 2019, 08:43 AM
Are Compu-fire and Pertronix compatible with the D-Jet contacts on the distributor?
Pertronix is, LE is D-jet
Posted by: dr914@autoatlanta.com Apr 25 2019, 03:50 PM
comp u fire seems to handle the heat better on the air cooled engines than pertronix, but is a bit harder to fit
Posted by: Mark Henry Apr 26 2019, 05:44 AM
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.
Posted by: 914werke Apr 26 2019, 03:43 PM
BTW Compufire owns the Pertronix brand ...or vica versa
Posted by: jcd914 Apr 26 2019, 03:59 PM
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.
@http://www.914world.com/bbs2/index.php?showuser=3380 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
Posted by: ConeDodger Apr 26 2019, 04:08 PM
Jim I think three years or more? I left it at Original Customs for you to pick up...
Posted by: jcd914 Apr 26 2019, 05:18 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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