01-24-2011, 01:01 PM
Join Date: Nov 2006
Location: Sunnyvale, CA
Total Cats: 785
I posted this elsewhere for use with an AEM EMS:
-Use motor mounts from any '94-'05 Miata (1.8)
-Use the coolant temp sensors from your 1.6 motor and install them in the new motor. You won't use the front thermoswitch (for your fans), the AEM will control the fans.
-Wire the OEM cam/crank sensors into your factory CAS plug (use pigtails from the '01 harness)
-Rewire your injector harnesses using pigtails. The AEM 30-1710 (90-95 plug and play) has internal circuitry set up for the 90-93 non-CA batch fire cars, and hooking the VVT solenoid up to INJ#9 will cause one of the injectors to lock wide open. Since your non-CA '93 harness won't have provisions for injector 3/4 in the OEM harness, you will pull from one of the middle connectors on the AEM for controlling all 4 injectors.
-Use the '01 ignition coils wired into the 1990 wiring. This will require deleting the ignitor, but it isn't too difficult to get going.
-Use the alternator from a 1994-1997 Miata and enlarge/replace the 1.6 ring connector to fit
-Use your OEM oil pressure sender, it will replace the smaller dummy sender in the '01 motor
-Use the '01 throttle body, it draws air for the IAC from inside itself which makes plumbing the IAC easier (as in, you don't have to do it at all). Use pigtails for the TPS and IAC connectors and wire them into the factory harness. Wiring diagrams are your friend here.
-Use the '01 intake manifold and a '99 fuel rail with a 1.6 FPR turned upside down in place of the OEM fuel rail damper. The return line will come up and around the intake manifold right above the injectors to the factory fuel line. Get the connector from the '99 rail, slice the hardened plastic line off, and slip a standard rubber fuel hose over it so you still have the proper connector for the feed line.
-intake/MAF: Design your own intake and delete the MAF (use a GM IAT sensor instead).
-exhaust: Use an exhaust for a 1994-1997 car.
Unsure of how you will read the VVT bits with the Adaptronic, but that should cover everything else mechanically.