I have a Datsun 240Z. It's my fun little money pit.
The carbs are fantastic, except when they vapor lock. What a shame. If only the head was crossflow.
I've wanted EFI for a while, but it either required coming up with a custom intake for the early (pre-EFI) head or modifying the head to accept the intake I had off a '75 280Z (drilling a different bolt pattern and slots for the injectors).
Last year I solved that problem. I rebuilt an '82 280ZX L28 and swapped it for the perfectly good L24. Still running the carbs though (the EFI head accepts both manifolds). Wanted to get the car back running as quickly as possible. It was only off the road for a couple days. And I now have an engine the EFI intake will bolt up to.
Anyway, my strategy is to change as few variables as possible to keep the downtime as short as possible. I like to drive it after all.
So I now have a MicroRusEFI.
I'm going to leave the mechanical/vacuum advance dizzy in place and run the MRE in parallel. Hoping the VR sensor will work like that anyway. If not, I'll get some kind of tach signal into the MRE.
To address the 6 injectors / 4 injector drivers issue. I'll be running batch injection (my only choice while using just the distributor).
I plan to pair the drivers up to drive 3 injectors per pair. 2 injectors is a bit much for a single driver, but 2 drivers should handle 3 injectors.
As far as sensors go, I have a MAP and a wideband. I have a throttle position switch too. Not sure if that'll be useful yet.
If I can get fuel working with this rudimentary configuration, I'll go for a DIS in the near future.
I almost have all the plumbing sorted out.
Hopefully going to start testing the electronic side of things this week.
My goal is to get the EFI working before Hot Rod Power Tour in August.
![Wink ;)](./images/smilies/icon_e_wink.gif)