Paul,

   Is there a good choice for EFI controllers for the 2^nd gen P Port?

   Which one could accommodate a MAF sensor?

   I have place a unit use in Ford V8s in the intake tract,

   Does TPS work on the P Port?

   Does Teeing the chambers using the oil spray orifices work with MAP
   on the P Port?

   I have an EC-4 single processor unit from Tracy,

   I just want to get the engine running and have been sorting out
   wiring sensors.

   Joe Berki



   Limo EZ 13b P Port


   Tracy's device is designed to use manifold pressure and not MAF
   sensors.

   The only controller that I know about that will use a MAF is the
   $3000 Motec. That has very steep learning curve indeed with
   inadequate documentation.

   Megasquirt might work.

   Do you know how to program in BASIC?

   What is TPS?

   Paul Lamar

        Joe,   I have just switched to Fueltech and am very happy with
       it now,
        but a lot of grief to get here.  All revolved around not enough fuel,
        for the standard fueltech is programmed around standard injectors in a
        rotary.  Does everything I need and possibly 3 times what is needed.  I
        really do not need to know when to change gears, nor to log into
        "burnout" mode etc.  Google fuel tech and there is an online instruction
        manual.  Cost me  $3300 AUD so in USD take possibly 25% off and freight
        to OZ as well.

        Neil Unger.


        Here is a you tube video I ran across on Neil's first start.
        If anybody else has a a you tube video let me know.

        https://www.youtube.com/watch?v=hSNBFLuZSK4 <https://www.youtube.com/watch?v=hSNBFLuZSK4>      Not long after this some no nothing juvenile has a video called why the rotary died? :-)

        He is totally clueless and made up  non existent phony problems. Fake news :-)

        There are some other aircraft rotary videos in this group by
        other people on the list.

        Paul Lamar

    Why the rotary died. No knowledge numb nuts. I would say a couple of problems. Yes economy and emisions are issues. The big problem is that when Ford owned about 35% of the company they had a lot of pull.
       Part of that allowed them to send executives to monitor expenses. The bank prior to that had started pulling the reins when the exchange rate was not as favorable for Japanese industry which adversely affected sales. Ford execs pulled focus to more mainstream products that are an easier sell and with well established technology. Now there is many in management that subscribe to the quick easy money deal. Not many of the original engineers and staff that overcame the rotary design issues virtually every other company gave up on. Still some enthusiasts there though.

    Dale Davies

    One of the so called problems mentioned is the alleged loss of compression as the apex seal
    passes over the spark plug hole.  Fake news.

    These people have not read Kenichi Yamamoto book "Rotary Engine".
    Essential reading.

    Air has inertia. Think of air as a lot of tiny marbles. If you only open a hole for a tiny
    fraction of second not much air will pass through.

    I suspect the combustion chamber has yet to be accurately modeled by
    CFD. Computational Fluid Dynamics. This is the gist of the problem understanding
    how to improve the combustion. It is a moving combustion chamber and the
    air will respond consistent with it's inertia.


    Paul Lamar

       No arguement from me there. My statement is more looking to the management perspective introduced and perpetrated from Ford and the Japanese bank. Granted it helped get through a difficult time and get profitable but everyone needs a hero or mascot. For Mazda that is the rotary engine.

       Dale Davies

       I think the Ford mistake was the 12 gallon fuel tank in the RX8 gave it a bad rep for fuel burn. The 4 doors and four seats were not that bad.

       Paul Lamar


       Paul,
       Is minimite still available?

       Would there be on unit for each chamber?

       What would I need to get started?

       Where to purchase it?

       Will it control ignition?

       Joe Berki

       http://circuitgizmos.com/

http://circuitgizmos.com/gizmo-store/#!/CGCOLORMAX2-Color-Maximite-Retro-Computer/p/53819402 <http://circuitgizmos.com/gizmo-store/#!/CGCOLORMAX2-Color-Maximite-Retro-Computer/p/53819402> Circuit Gizmo $59.

       One for each rotor.  Fuel only. I would get the M&W CD system for the ignition.
       CD systems are much much easier to install as they fire exactly when you tell them to fire.
       The stock RX8 and GM coils are a big problem as they must be programmed for proper
       dwell.

       The maximite is very very easy to program.

       You just need a crank angle sensor. The stock crank angle sensor will work fine.

       Paul Lamar

   I used to think my 1973 RX3 was bad on fuel until I noticed I drove 250 miles on a Friday night and never left the city. Lots of driving it hard. If I behaved in the city I got about 18 MPG and 20 MPG highway at 75 mph. Beat most V8 cars and fuel economy like them. Better than lots of them. But if comparing to a Pinto, Vega or the rice rockets it was poor.
   I think the 16X with a power recovery system would work well and get fair fuell economy.

   Dale Davies


   My RX8 gets 25 MPG at a steady 65 MPH.

   Paul Lamar

       Well I am using imperial as that was what our pumps measured at the time. I did get the RB jets for the carb and built my own header. Went to 28mpg Imperial. The '73 emissions dumped fuel in to reburn with air injection in the exhaust. Chev 1/2 tons with a 350 had to meet the same emissions and did the same thing. A 1/2 ton with a 454 only had to meet medium duty emissions and got better economy. All you needed to do was go to a wrecker and trade carbs with one a couple of years older.

       Dale Davies


       If you use the power it will burn the fuel.

       My RX2 got well over 20 mpg but it only had 120 HP.

       I wish I still had it. It only weighed 2500 pounds. Imagine how
       that would go with a  250 HP RX8 engine? It would be a simple
       bolt in.

       Paul Lamar

   Yes. And to find a good car or body is almost impossible. With a RX8 engine and trans it would be a rocket. The RX2 final drive at 3.9 would help economy.

   Dale Davies


   Back in 1973 I raced an Opel GT across the Ohio turn pike and blew it up :-)


   Paul Lamar

Seen a OPEL GT in the Princess Auto parking lot yesterday, a young chinese guy fiddling with the carb. Carter GM sold those cars when I worked
there in the 70's. I recall them being very troublesome, although not as bad as the Vauxhall.

Steve Carlisle




   The Rotary Engine free News Letter. Powered by Linux. If you want
   off the list PLEASE let me know and I will remove  you. ACRE NL web
   site. http://www.rotaryeng.net You Tube http://tinyurl.com/beqqxas
   Copyright 1998-2017 All world wide rights reserved.