FC Zach's '87 Sport

C. Ludwig · 06-12-2015, 11:41 AM

No issue with plugging that port. The lines runs from the rear iron, through the intake for the thermowax cold idle function, and then to the water pump. Plug the pump and the rear iron and you're done.

FC Zach · 06-12-2015, 12:27 PM

Yeah mine has been plugged for some time now, I just remember talking with a reputable rotary guy in the local community where he went on about the importance of having the two ports tied together. . something about air pockets that "could" be trapped in the rear iron. .

The theory made sense by the way he explained it but it never worried me much. I was more so stating it as a disclaimer to avoid any shaming

FC Zach · 06-16-2015, 03:08 PM

So I got an emissions test done on the Mazda today. Although I didn't expect it to pass I definitely didn't see it doing worse than when it was carbed. . . The car hasn't been tuned much so more will be needed (which is why I didn't expect much), I was just hoping it was running a little lean but that is definitely not the case. A separate tune for emissions will be needed.

Here's the EFI results:

And carbed results from many years ago:

06-12-2015, 11:41 AM	#1
C. Ludwig Rotary Masochist Join Date: May 2008 Location: Floyds Knobs, IN Posts: 494 Rep Power: 18	No issue with plugging that port. The lines runs from the rear iron, through the intake for the thermowax cold idle function, and then to the water pump. Plug the pump and the rear iron and you're done. __________________ _______________________________________________ *One stop Haltech, AEM, Syvecs shopping. Installation and tuning.* http://www.lms-efi.com *Free support. Drop us an email.* chris@lms-efi.com 502-515-7482 Facebook @LMS-EFI

06-12-2015, 12:27 PM	#2
FC Zach RCC Loves Me Not You Join Date: Mar 2008 Location: Eagleville, TN Posts: 2,267 Rep Power: 20	Yeah mine has been plugged for some time now, I just remember talking with a reputable rotary guy in the local community where he went on about the importance of having the two ports tied together. . something about air pockets that "could" be trapped in the rear iron. . The theory made sense by the way he explained it but it never worried me much. I was more so stating it as a disclaimer to avoid any shaming __________________ 1993 Yamaha GTS1000 1992 Celica Turbo AllTrac 1987 RX7 Sport 1979 Yamaha G1, KM24 powered 1975 Dolmar KMS4 Last edited by FC Zach; 03-02-2017 at 01:29 AM.