garyneedsz Posted September 29, 2010 Share Posted September 29, 2010 Alittle background. I just put in an '81 turbo motor 5spd into my s30. its currently running off stock ECU. there is no cold start valve, or anything dealing w emissions. so no egr, no cat, no muffler even. its running off of the 81 dizzy with the CAS at the pulley. As of now, the timing mark at Op Temp is around 15. I cannot adjust the cas or dizzy anymore. any ideas of what could be the problem? why is the timing off? I was reading about swapping the 81 dizzy to the 83. i read for about an hour and didnt see any issues concerning this swap. would getting a 83 dizzy fix my problem? does the swap require anything else besides the shaft? will the ECU read it the same as the external CAS? Quote Link to comment Share on other sites More sharing options...
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