4k Electronic Dizzy

[Banjo]

Hey Guy's,

Picked up a reconditioned (new bushes etc.) 4K electronic dizzy on eBay the other day for a song ! I'm as happy as a pig in a mud bath !

 

Question, There are two wires that come out of it into a green plug.

 

Do these normally connect to some other ECU module that Toyota fitted to the 4K engines with electronic dizzys, or is there more switching electronics in under the little black cover inside the dizzy, so that the wires directly connect to +ve 12V & & the coil etc ?

 

I've unfortunately never seen a KE55 with an electronic dizzy setup. My Gregory's 184 manual only describes the points dizzy setup & wiring diagram only depicts the points dizzy wiring.

 

Any assistance would be greatly appreciated. I know a few of you guys like Nick have had electronic dizzys on your 4K & 5K engines, so I hope there is someone that can point me in the right direction.

 

Thanks in advance !

 

Banjo :insane:

[Medicine_Man]

Heres a pic of my 4K Electric Dizzy..

 

 

Another of the rest of my 4K-E wiring harness

 

 

If you want any close up pics I can take some..

[NickZ]

one goes to + side of the coil and the other goes to the - side, from memory one is black that will go to the - negitive and the other, well + positive of the coil...bit don't remember the colours.

Edited February 16, 2005 by NickZ

[kangaroosa]

I have a 5k electronic dizzy and would have to agree with Nick.

On my dizzy the positive wire is Black with an orange stripe. The Negative wire is just black.

I assume you have a coil suited to your electronic dizzy?

[Banjo]

OK, the plot thickens, but the pictuire is a bit clearer now.

 

The 4K electronic dizzy I have is a Nippon Denso unit, P/N 1900-13010

 

It has the marking 4k-U and another number 029100-4803.

 

Tonight I pulled it to bits, and all it has inside it, besides the normal automatic advance weights/springs, and vacuum advance unit, is a single reluctance magnetic sensor, which has two wires (white & orange) coming out to a green 2 way plug.

 

I assume Kangaroosa's comment

 

" I assume you have a coil suited to your electronic dizzy?"

 

indicates there is a special Toyota coil to be used along with the 4K electronic dizzy, that has the electronics embedded in it, to switch the coils primary current etc.

 

Are these coils available or has some one out there got one they wish to part with for some green stuff ? I haven't got one.

 

I guess the easiest way to utilise the electronic distributor, as is, is to mate it up to a Jaycay Hi Energy electroninic ignition system, which will accept a reluctance sensor as the trigger input. Has anyone done this before ? I have a Jaycar unit here on the bench I haven't got around to assembling as yet.

 

Any comments or suggestions welcome. :insane:

[kangaroosa]

The coil that i run is a "Scorcher" brand. Its made especially for electronic ignitions. I suppose there is a standard toyota coil to suit your electronic dizzy. Or you could enquire about prices for an aftermarket coil - mine is aftermarket and cost me $70 from the bloke who re-curved my dizzy.

I think an aftermarket coil would be your best bet. Most performance shops would be able to help you, or you could try ignition specialists.

By the way, my dizzy is Nippon Denso too.

[Banjo]

If I'd been smart enough to read Super Jamie's FAQ site I would have answered all my questions in one hit.

 

Here's what he has to suggest about the electronic dizzy's

 

"Nippon Denso Electronic Type

These a mainly found on jap import motors.

 

There are 2 types, 5K internal ignitor and 4K external ignitor. The internal ignitor dizzy, just needs to be connected to an appropriate electronic coil. The external type needs an ignitor to fire the coil. Ignitors from Mazda RX7s and Mitsubishi Scorpions can be utilized with the external dizzy.

 

 

The electronic ND distributors are far better made than the early points versions. The advance mechanisms are a better design, more similar to the Bosch dizzy.

 

The worst bit about the electronic dizzy is its cost. Wreckers want around AU$150 for one. New igniters depending on type, are over AU$100. New electronic coils are more expensive too. If you take the time and look around a bit you can do it far cheaper."

 

 

Still interested if anyone has hooked up the 4K electronic dizzy which requires an external ignitor, (which is exactly what I have got), to a Jaycar HEI system.

 

Thanks guys for help this evening.

[Super Jamie]

and i believe i just stole that from doug's webpage :insane: as it says on the faq

 

if you want to hook an external ignitor dizzy up to jaycar hei, you'll need to do mods to the hei kit, it involves changing a resistance somewhere, i think the input from the reluctor sensor. if you can deal with the god awful searching system, karl skewes documented what he did to his on the oldcorollas yahoo group. he might have also posted it on his site, garagedori.com

 

i stuffed around with a 4k internal ignitor dizzy (and 5k internal ignitor dizzy with a dead ignitor) for ages and i couldn't get it working. i was using a camry ignitor (which normally gets its signal from the ecu, so i dunno if it was ever going to work) and an rx7 ignitor (which i hooked up and may have fried through lack of wiring diagram). in the end i gave up and regraphed a bosch points dizzy. if you search on the "dime quarterly" datsun site there are generic ignitor hookup instructions, and i've seen the ignitors they talk about out the back of repco stores, even though they're not in the repco ignition module catalog

 

stewart ford from oldcorollas can import starlet 4k elec dizzys with ignitor from america/canada for something like AU$160

[Banjo]

Thanks Jamie,

Your advice is always valued. I am an electronics engineer by trade so getting the Jaycar HEI to work with a 4K reluctor dizzy without internal ignitor will not be a problem. I was just interested as to whether anyone in the club has done it before. When I've finished it I'll document it and you can add it to your website if you want to.

 

As an aside. Pertronix in the USA who do electronic dizzy converter kits & the like, have just brought out a new Iginitor II with a variable dwell feature that their first model didn't have. Someone on eBay.com.au has picked some up of the superceded modules, & is selling them for AUD $ 99.00 buy now.

 

Just search all catorgories & keyword ignitor, and you'll find it.

 

Thanks again ! :insane:

[Medicine_Man]

When I've finished it I'll document it and you can add it to your website if you want to.

Would go good in the rollaclub.com how-to forum too :insane:

Edited February 17, 2005 by Medicine_Man

[slippery]

hay guys i am buying a 4k injection kit do i need the disi to run the fuel injection because it doesent come with 1 ?

[Taz_Rx]

Good to see you're searching mate, but you don't need to ask the same question in every thread about EFI or dizzys on RC.

 

Go back to your car electrical thread and I'll sort you out there. :blush:

[Evan G]

whats the dwell on a 5k electonic dissy suppoesd to be? i think its a nippon.

 

cheers fellas

[Evan G]

its set to 42 degrees of dwell and i can't get my timing more down then 15 degrees.

 

anyone know the setting? 52?