Yes, I believe tuning would be a completely separate topic

Thanks so much guys for all your help. For anyone with the same 260z problem of no spark after getting power to the coil. Get a 280zx matchbox dizzy.  So simple to hook up. Here are the results.  Yahoool

3 hours ago, siteunseen said:

Never an issue on my '72 with 2 SUs. I remove the air box completely. Took me a minute to figure out the hole on the side that allows air in. Mine was pegging out at first then I rotated it around to open up that hole and pull some outside air in. Then it was a lot easier to use.

Might be because I have two insulators between the carbs and manifold.

11 hours ago, siteunseen said:

Never an issue on my '72 with 2 SUs. I remove the air box completely. Took me a minute to figure out the hole on the side that allows air in. Mine was pegging out at first then I rotated it around to open up that hole and pull some outside air in. Then it was a lot easier to use.

 

7 hours ago, Racer X said:

Might be because I have two insulators between the carbs and manifold.

I just had a look at my process and even without the extra spacers the space is tight. I leave the airbox base mounted, and tune for the extra length of the air horns. It gets tight by the strut tower and brake cylinder.

The Uni Syn is only about an inch thick so it is easily and quickly moved back and forth. And it is made of metal.

Oh yeah.