Perusing the selection of Subis at a local junkyard I noticed that all of the remaining distys were Nippondenso units. That got me to wondering how easy it is to switch from a Hitachi to a Nippondenso.

 

One obvious issue is that there is some sort of external ignitor unit that mounts on top of the ignition coil above the wheel well. If I pull this unit and the disty and use them both to replace my Hitachi will I have a working engine?

 

Has anyone done this? How did it go?

whenever I've done them, it was a straight swap over....

I've got a hitachi carb but a nippondenso rotor... accell coil... yep.

So what exactly is that thing mounted on top of the ignition coil?

 

It is present in Nippondenso cars but not Hitachis.

To keep the static down on the radio.

Does that mean I can use a Nippondenso disty without it and only suffer crappy radio reception?