So, the points style dizzy uses ignitors that are not on the dizzy. I want to put an early style dizzy on my FB, that has the electronic ignition. I hear the wiring is different, is this something that can be easily fixed, or am I looking at a whole new XM-01 (I believe is the harness, Haynes manual) harness as well?

 

Points style distributors do not have ignitors. The "points style" distributor is the early model, the (help me out on years here, guys? 82) in-between model had remote-ignitors and the later models had the familiar J-109-on-distributor-body ignition.

Which of these are you coming from, and which are you going to?

 

Stu: The '79 dizzy used point (no ignitors at all). The '80 was the 1st year for electronic ignition for the RX-7s. They used J-105 ignitors (instead of J-109) and the ignitors were mounted remotely instead of on the dizzy itself.

If you want a clean install to trigger an MSD for example, the '80 dizzy is the way to go. Speaking of which, I sent you a pm about this before the lakehouse meet (I guess you didn't get my pm or something). I have an '80 dizzy for you (if you want it).

All '81-'85 cars used the J-109s mounted on the dizzy.

 

That is what I am aiming for. I wanted to get some more info on it so I don't get a part that I don't need

Main thing I am looking for is no wires to/from the dizzy. Ultimate clean.

 

Even the points distributors had wires going from the dizzy. Also, you would need those nasty huge ballast resistors mounted to the coils when using points.

Best bet is to grab the 80 from gsl-se addict

 

No matter what, you will need a pair of wires (minimum) between the dizzy and MSD. These are for the pickups inside the dizzy (pair of wires for leading, pair for trailing). These go to the purple/green wires on the MSD box. You can accomplish the same thing by using gutted ignitors with the '81-'85 dizzy.

Not sure if that is what you are looking for or not. You could also use an '80 dizzy to trigger some remote mounted ignitors (say GM HEIs or a pair of J-109s for DLIDFIS).

 

Here is the picture of the engine bay:



Dirty and messy, I know. This winter I plan on yanking the engine and trans out, and completely redoing the engine bay.

These are the changes I hope on getting done:

*Cleaning all the grease/grime off the bay walls
*Getting rid of the plug wires to/from the dizzy
*Relocating the battery to the trunk area with a miata battery
*Relocating the oil filter pedestal
*Relocate the Alternator
*SS lines where need be
*Welding un-needed bolt holes in the engine bay

Just a few things off the top of my head. Starting with the dizzy first

 

Stu, you can't totally eliminate any wires coming from the dizzy unless you run a trigger wheel on the crank pulley like the third gens. You would loose your trailing. The only way to keep the trailing would be to run an ignition only computer.

 

Hey, I'll take that off your hands as I have seen you offer it a couple of times on here. Will it work with the Turbo II S4 that I am installing?

 

Stu gets 1st dibs. He gave me a carb, so I owe him.

It won't work with your TII setup anyway (I assume you will be running the S4 ECU or some kind of EFI). For that, you will need the 2nd gen CAS (crank angle sensor).

 

Not too worried about the trailing. Red headed step child of ignition

 

By all means, I wouldn't mind it

Crank trigger wheel sounds nice. I looked them up a while back and there wern't any for our specific cars. I guess I will search up on the 3rd gens pully/wheel whatnots and see what can happen from there.

 

My rx3 does not have plug wires on the dizzy

 

Tell me how you did that! That is the best looking engine bay, Ray must have came by

 

He has an MSD firing a 2nd gen leading coil. Not running trailing.

 

So same setup as me, but without trailing. Hmm.

 

Yep.....Also an 80 Dizzy, so no ignitors on the dizzy body either.

-billy

 

I know it is in the RX3, but for the FB, what would the wiring modifications be? Since there would be no ignitors on the dizzy, where would I get the signal from?

EDIT: Oh wait, I see the wires!

 

There are no ignitors on the dizzy, but the inductive pickup is still there on the distributor. The wires carry that trigger to the separate 80-only ignitor box.

 

Yep.......Since I run a MSD I do not need the remote ignitors. Just wire the dizzy magnetic pick ups to the green and purple MSD wires.

-billy

 

I do have a second gen crank angle sensor and I will be running a Microtech LT8 as an ECU.

 

so on some setups i've seen using 2 msd boxes, one runs leading and the other runs trailing?

 

Could be. Or they could be running a box per coil.

-billy

 

does that set up you have add any HP or is it just for show???

 

What? adding a MSD box? or leaving off the trailing?

MSD is a pretty standard upgrade. Helps with starting for sure. Could not say what HP it added if any.

Removing the trailing is an experiment. Does not take away HP...well maybe 1 HP. Nothing noticeable. Gave me simplicity though.

Oh......and I don't do things for show. Form Follows Function.

-billy