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81 turbo efi question


destro79

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found this posted by cgsheen  

 

     But, straighten this out first:
- You have a 1981 L28ET? (1981 280ZX Turbo engine)
- Is has the EXTERNAL Crank Angle Sensor bolted to the front drivers side of the engine and wiring that goes up between the dizzy and t-stat housing (round 4-prong connector)?
- Your ECCS (ECU-to-engine) harness is from a 1981 280ZXT and it has a dropping resistor pack?
- Your ECU is from a 1981 280ZXT?
- Are you sure the oil pump is stock 1981? (since the dizzy isn't there, post a picture of the "hole" it goes in - to make sure someone else hasn't already modded the engine to accept an '82-'83 distributor)

If it's ALL stock 1981, then you need an '81 dizzy (which is essentially a body, cap and rotor - it doesn't do anything except distribute spark. Doesn't have any other electronics as the CAS is external and the ECU controls the Ignitor/Coil

 

 

 

 

on this thread   http://forums.hybridz.org/topic/108019-distributor-question-for-81-l28et/?hl=turbo+distributor&do=findComment&comment=1010381

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The 81 components give the identical signal to the MS as an 82/83.

 

To put an 82/83 CAS on your 81 L28ET, drop the distributor drive spindle out the bottom of the engine by removing the oil pump. Install 82/83 drive per FSM Directions.

 

Read the Megasquirt forum here, it all pretty well covers these points.

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