Hi,



I am new to this whole rotary world. I was wanting to do a direct fire on my 74 mazda rx4 but dont know where to start. Ive been trying to find a site with the schematics but ive had no luck. So if anyone can give info on the whole rx4 iginition, ill take it.





Ohh, heres some info on my rx4, it has a 13b rotary with a two barrel carb on it, car turns over but has no spark at all to actually fire it up. Also my distributor has two black boxes on it instead of the metal ones.



So if anyone has some clue on why this is happening that would be excellent.



Thanks

 

I have never heard of direct fire. Also strange is that your 13B has a 2-barrel carburetor, as stock would be a single 4-bbl. Some people convert to a performance 2-barrel, such as a Weber, but that immediate indicates that something has been done to that engine that's out of the book. Lastly, I don't know what black boxes on the distributor you are referring to. It's a bit unclear what you are dealing with.

The first thing you want to explore is why you don't have a spark. If the car was running before you got it, the coils and ignitors would be my first guess. But again, if you are totally in the dark, consulting somebody who knows about rotaries might be your smartest move at this point.

Good luck!

 

Direct Fire as in NO Distributor? I suppose you could swap RX7 parts (Mainly the CAS and 4 Coils).

 

(DLIDFIS) Dual Leading Ignitor Direct Fire Ignition



Check it out here: http://www.needfulthings.net/rx3club/forum...ay;threadid=116

 

check out this link.. very useful too.. http://www.geocities.com/cd23c/ignition.html

 

thanks that was some really help ful info I just hope I can get all the wiring down

 

Okay I read the two will it be easier with the j109 or wells IM and also to double check how is the wiring on the distirbutor. But thanks that was some really helpful info I just hope I can get all the wiring down. I let you guys know if I have any more questions

 

depending on where you live the j109 ignitors might be easy to snag at a wrecking yard.. but if not you'd probably wanna go with some from a local store.. the gm hei ignitors are a popular alternative..

 

I drew up some new pictorials that may better show how its all wired up if you are still unsure...

 

is there any advantage in using MSD coils over the stock ones, or is it a very small improvement?