720 ECU Scope - Infamous Nissan

SFox · 03-09-2016, 07:10 AM

Howdy.

The ECUs on the 85 720s have no control over ignition (Dizzy, coils, etc), right?

highest_vision · 03-22-2016, 04:50 AM

Mine is electronically controlled. If you have a z24, yours should be, too. If someone has retrofitted an L20 or something, then I don't know; I have never worked on one of those that I remember.

Why do you ask?

SFox · 03-22-2016, 05:23 AM

My Z24's wiring looks like it was done by a drunk octopus who got angry and set it on fire. Needs a Weber, wanted to make sure there were no little gotchas that'll come in later.

highest_vision · 03-23-2016, 04:03 AM

Haha for what it is worth, I don't think the computer has much input on anything with these engines. The carb has some functions that would not work without the computer, and I do not know how well it would run without it... However, if emissions are of no concern, you only need enough wires to operate the coils.

I probably should elaborate more on the ignition control - it is only to change timing under certain conditions, it is not like a distributor on something 10 years newer.

It should have vacuum advance, etc.

03-22-2016, 04:50 AM	#2
highest_vision Join Date: Feb 2015 Location: Emigrant MT Posts: 259 Vehicle: 1995 Hardbody Thanks: 28 Thanked 31 Times in 29 Posts	Mine is electronically controlled. If you have a z24, yours should be, too. If someone has retrofitted an L20 or something, then I don't know; I have never worked on one of those that I remember. Why do you ask? __________________ James 1995 Hardbody XE 4x4 5 speed 1985 720 Z24 5 speed Several 2 wheeled things

03-23-2016, 04:03 AM	#4
highest_vision Join Date: Feb 2015 Location: Emigrant MT Posts: 259 Vehicle: 1995 Hardbody Thanks: 28 Thanked 31 Times in 29 Posts	Haha for what it is worth, I don't think the computer has much input on anything with these engines. The carb has some functions that would not work without the computer, and I do not know how well it would run without it... However, if emissions are of no concern, you only need enough wires to operate the coils. I probably should elaborate more on the ignition control - it is only to change timing under certain conditions, it is not like a distributor on something 10 years newer. It should have vacuum advance, etc. __________________ James 1995 Hardbody XE 4x4 5 speed 1985 720 Z24 5 speed Several 2 wheeled things

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