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HEI ignition upgrade
Quite a regular
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2015/5/13 10:51
From Sydney, Australia
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Hi All

Wondering if anyone has done this in there 1200?

I've been looking for an option that isn't huge $$$

Using a reluctance pickup dizzy and a low primary resistance, transformer type coil, to get a good whack of spark to the plugs

Just did some googling to find this article

http://dtec.net.au/High%20Energy%20Ignition%20Upgrade.htm

I will be doing it myself, seems fairly straight forward, with easy to get parts

Hope it interests others.
Any thoughts or advice welcome

Cheers

Posted on: 11/11 11:12
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Re: HEI ignition upgrade
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There's a few good suggestions in the Tech Wiki on this. A whole page on it: http://datsun1200.com/modules/mediawi ... title=Electronic_Ignition

Initially I used a Jaycar HEI kit, mainly because when I bought the car it had a low ohm coil on the stock system, so the coil cooked and the car broke down. Now I've got the Ford EDIS setup on there. If I did it again I'd just use the wasted spark option on the Megasquirt.

Posted on: 11/11 20:01
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Re: HEI ignition upgrade
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The DTEC method looks very do-able. But also consider using a GM HEI module (new or used). It's almost exactly the same thing -- see GM HEI

This works with Datsun and Nissan reluctance (EI) distributors. But if you already have the stock Nissan EI unit, it's even more reliable than the GM unit, and just as High Energy

Make sure you use a high-energy coil. The standard 12V low energy coil may be used if you retain the ballast resistor
* remove ballast resistor and use 12V high energy coil (like the Bluebird EI coil)
OR
* keep the ballast resistor and use 12V low energy coil (like standard 1200 coil)
Either one will work with HEI module

Attach file:



jpg  GM HEI on Datsun.jpg (36.16 KB)
174_5a078afe9703b.jpg 480X360 px

jpg  HEI wiring with high-enery coil.jpg (24.08 KB)
174_5a078dedb1df2.jpg 560X352 px

Posted on: 11/11 23:42
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Re: HEI ignition upgrade
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I should have said all that applies to the Bosch 021 modules as well. Even the wiring diagram is the same

Bosch 021 is very common here in USA and also I understand in Australia, even can be found on Ford vehicles (many 1981-1985 V8s, for example). For reliability mount it on a heat sink with thermal paste. It will last longer than when mounted directly on the distributor like it was in the Nissan Bluebird. Some bolt it to the strut housing on a thin aluminum plate

Posted on: 11/12 6:44
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Re: HEI ignition upgrade
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Hi guys

Thanks for the replies and links

I read the GM HEI one
Where I got the idea from actually, love the tech wiki 👍
The reason being

I have a Chinese made, (EBay) dizzy
It has a module, but unknown what module it is

Or what a low resistance coil might do to it.

I know the GM ones will take the extra current and the internal transistors do the job of switching

Anyone had and experience running a higher power coil on the Chinese dizzys?

Reliable?? Or did it go up in smoke ?

Posted on: 11/12 7:36
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Re: HEI ignition upgrade
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If the Chinese-made dizzy module looks like this:
Open in new window

... that's the type that is for high-energy coil. Now the quality may vary depending on the maker of the module, but at least one of the Chinese makers is good. Does it have a brand name or number on the module?

Posted on: 11/13 4:25
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Re: HEI ignition upgrade
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Hi D

I'll attach a photo

It has a module inside
The number I believe probably refers to a date of manufacture maybe ?

Says 2011 07 16

It's grounded to the dizzy body with the two mounting screws.

However, not sure if its going to like switching a low primary resistance coil
Planning on using a Bosch transistor HEC715

I'm building an A14/15 for my ute now.
So won't be testing until the motor is back together and in the car.

I figure if it burns out the module in the dizzy.
I'll just use an 021 module that will do the job.
They are about $80 brand new

Posted on: 11/13 8:25
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Re: HEI ignition upgrade
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Does a stock USDM 1981 B310/210 use a high energy coil from the factory? I'm thinking so since it's electronic ignition and has no ballast resistor but want to make sure before I try to install a MSD 6AL amplifier in the near future...

Posted on: 11/14 15:18
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Re: HEI ignition upgrade
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Yes, all USA B310 is high energy. Also 1978 B210. 1975-1977 B210 was low energy though some used a high-energy coil along with a resistor because the early modules couldn't handle high amps

Posted on: 11/14 22:50
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