What's involved in a dizzyless setup

[1979ZED]

Hi All,

 

I am converting my motor to a turbo motor and have been told I might like to look into setup the engine up distributorless.

 

What's involved in this?

 

Done some searches but haven't come up with anything. Has noone done it around here?

 

It's a 280zx with an L28E

[Zedman240®]

Just sent the PM but found the thread I started..

http://www.viczcar.com/forum/index.php/topic,5537.0.html

[garvice]

Yeah it has been done quite a bit.

Search for DIS or EDIS on hybridz.org

 

Two basic ways of doing it

- Using an ignition module like what is on a lot of fords (search EDIS), which will take care of your ignition. You will need a CAS, module/Coils

- Getting a proper fuel and ignition computer. You will still need a CAS so you know where the engine is at, ignition module (or use coils with built in ignitors like LS coils), Computer to fire coils, Coils.

 

Essentially the computer or ignition module gets a signal from the cas and calculates when to fire the coils.

 

Oh yeah, your exhaust manifold was picked up today too.

 

Brad

[1979ZED]

Thanks for the PM Zedman240.

 

Cheers Brad on the manifold.

[DatPilot]

the early L28et had a slotted disk on teh back of the harmonic balancer with a sensor (on-crank CAS)

then they changed it to have the CAS inbuilt to the distributor, its a small metal disk with tiny slits cut into it (360 maybe?) then 6 bigger slots.

Its only fault is there is, you need the oil pump drive spindle to slot into the dissy. Grab the turbo oil pump while your at it.

 

 

Easiest option is to source a Turbo Dissy and just use that (without the cap & leads etc), either from an L28et (USA) or from a L20Aet (R30 skyline in japan, or the Laurel) They pop up on ebay from time to time, shipping is the killer though. If you could have one to your door for $200 then you are doing well.

 

I somehow scored a complete L20Aet on a pallet, incl 5 speed and piles of spares/bits etc for $400 delivered! (came from an import R30 that was stripped in Brissy, owner put some leyland V8 in it instead)

 

Commodore coils are good too, easy to replace etc

 

ANOTHER option is to adapt the dissy from the RB30e (R31 etc) ther IS a way to get it to work, requires machining and customising. Quite fiddly but definitly possible.

[Six_Shooter]

Switching to DIS depends on a few other things.

 

Are you also wanting to add/retain EFI?

 

I added DIS to my 240Z. I also added EFI.

 

I used a DIS ignition system found on North American 60 degree V6s. They are plentiful here, and I had a few already at my disposal. lol

 

I had already a few years ago built a 60 degree V6, for my truck, using a generation 1 block, that didn't have DIS provisions, with a later (generation 3)  top end that basically required the use of DIS, so at the time my Grandfather and I designed and made an external crank trigger system for the DIS, that was installed between the crank pulley and harmonic balancer. I decided to use this reluctor wheel and part of the mount on my Datsun, since I was no longer using nor needed the DIS trigger for my truck.

 

This wheel was redrilled for the Nissan crank pulley, and had a couple roll pins added for extra measure, and to ensure proper alignment at anytime it was removed, when re-installed.

 

 

In the above picture you can see I am also setting up the crank position sensor mount location. I mounted the base off the same two bolts that are used for the timing tab.

 

In the next picture you can see the crank position sensor parts. The part that the sensor is mounted to directly was left over from when it was installed on the truck. The plate is new for the Datsun, and made adjustable, though not nearly as much as the first time this was made. I found I really didn't need much, especially with the ability to tune for base settings in the ECM.

 

 

I don't have any pictures of the final product, but this is pretty close. The only changes from this were a spacer that was installed behind the reluctor wheel to support the whell ahen a longer crank bolt was installed to hold the assembly all together. I didn't feel the 2 6mm bolts were enough to hold the wheel on, and didn't want to chance it.

 

 

I don't have any pictures of the coil packs uploaded right now it seems.

 

You could do something similar using Holden 3800 coil pack, I believe those engines are found in the Camira? I'm not entirely familar with the Holden line up, but another website I am on that deals specifically with Delco EFI seems to mention this car a lot, for parts like this.

 

Ford EDIS is also another option. I'm not sure of the availability on Oz though.

 

Both GM coil packs and the EDIS can be controlled by Mega Squirt (not a favorite EMS of mine), or by thier respective manufacturers ECMs.

 

I am using a Delco (GM) ECM in my car, with some custom code that adds a bunch of functionality that the original code didn't have.

 

I believe there is a Mega Squirt item called a Mega Jolt that is capable of controlling these DIS systems, if you just wanted DIS ignition.

 

Both the GM systems and the Ford systems do have built in base timing, that can be used in bypass or test modes, and still run the engine without an ECM connected to them, but it's not recommended to drive the car that way.

 

There are other more expensive aftermarket EMS options too.