Does anyone know where to get output specs for the normal engine
sensors?  I've looked at the SAE site with no luck (it was difficult to
navigate so it might be there I just couldn't find it.)  I would like to
build another EFIS (common goal nowadays?) and need to know what the
output is from these sensors.  I refer to coolant temp, mass air flow,
oil pressure, and etc.

Not much time so short answer:  Forget about all the stock sensors and toss
them in the trash.  All the EIS units out there will require different
sensors. Get the recomended parts from the EIS maker.

Tracy Crook
tcrook@rotaryaviation.com
www.rotaryaviation.com

That's just it, Tracy.  *I* am be the EFIS maker 8-).  My goal is
moderate precision, but repeatability within 2 sigma.  Cheap is the very
important operative word, here.  The computer alone looks as if it will
be about $800, and I do all the programming.  That leaves only $400
budget for everything else, and $400 for the screen.  In my Ford engine
conversion (gasp, yes I know that is heresy for this list, but I already
have it and the Blanton PSRU.  The rotary is my long term backup plan),
all the sensors are already in place from the factory, so tapping into
them shouldn't be difficult.  I hope.  I have a scope to put on them,
but was hoping to find out in advance which if any are frequency
signals, voltages, pulses, or what have you; and of course min and max
ranges.  Scoping all that out on the ground will take forever and might
be misleading compared to values seen in flight stresses.

Thanks,
AI Nut

I'm using stock sensors, but didn't have to interpret anything
because I'm using stock ecu also.  You can get some
sketchy data on some of the sensor outputs from the
maintenance manual for the car year the engine came from.
By no means complete enough though for what you are doing.

--
Perry Mick
Duckt N7XR
http://www.ductedfan.com

 
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