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#1 Not a dizzy anymore

Posted: Sat Sep 14, 2019 12:19 pm
by lowact
Here is pic of my stripped down repurposed Opus disributor, alongside an original for size comparison. Is now a cam angle sensor, comprsing 2.5" 36-1 trigger-wheel and Honeywell SNDH-H3P-G01 sensor, for fully sequential efi & direct fire ignition. Haven't tried it yet, the lairy green cap is the 3d printed plastic prototype, final, will be aluminium, either CNC machined or 3d printed.

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Is as compact as possible to leave plenty of room for ignition coils on each spark plug.

#2 Re: Not a dizzy anymore

Posted: Sat Sep 14, 2019 4:13 pm
by jagwit
Which coils will you be using Colin?

#3 Re: Not a dizzy anymore

Posted: Sat Sep 14, 2019 9:10 pm
by abowie
Now that is a clever idea!

#4 Re: Not a dizzy anymore

Posted: Sat Sep 14, 2019 10:24 pm
by lowact
The coils are GM spec 19005218, 40kV, built-in drivers, they fit very tidily between the injectors.

viewtopic.php?f=9&t=18608#p150727

#5 Re: Not a dizzy anymore

Posted: Fri Feb 13, 2026 10:19 pm
by Sdinse
Looking at your picture of the coils, I can't tell if you are using the original heads with slanted spark plugs or the later heads with the straight spark plugs. I had thought of using GM coils similar to yours but they didn't seem to be able to deal with the slanted plugs. Just wondering how you dealt with the actual connection to the plug. Kinda hard to see in that pic.

Currently I'm using 2 of the 6 pack coils as in the last Denso equipped V12s with a couple of Mitsubishi ignitors.

#6 Re: Not a dizzy anymore

Posted: Sat Feb 14, 2026 11:54 pm
by lowact
Coils connect via short "pigtail" HT leads. With flat heads (slanted sparkplugs), these HT leads would need to to be a bit different; to have 90-degree boots for the sparkplugs, i.e.:
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My ECU has 12 ignition outputs so is able to fire each coil directly.
Meanwhile the "not a dizzy" now has its funky retro style aluminium top ...
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#7 Re: Not a dizzy anymore

Posted: Wed Feb 18, 2026 6:09 am
by lowact
45 deg boots maybe even better ...

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#8 Re: Not a dizzy anymore

Posted: Wed Feb 18, 2026 8:20 pm
by Sdinse
I'm assuming that you had those holding brackets 3D printed?

#9 Re: Not a dizzy anymore

Posted: Wed Feb 18, 2026 10:03 pm
by lowact
Yep. Those were early version, concept prototypes. Very happy with the finals:

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