Doug,
On another matter, while I have your attention, do you want me to do a graph
for you,  with your timing. I have amended the degrees to reflect Paul's
'Rotor Position Graph'.
I would be interested to see what your aiming for.
George (down under)

George,

Thanks mate. Please do.  At this moment I am only concentrating my study
on the intake part of the cycle.  I would like to see the events of 360
e-shaft degrees from the moment the apex seal passes the fully opened
intake port. You describe this point as IO. There is  no need for BTDC
and other recip. engine references or ignition events or even actual
milisecs as for each rpms it will be different. I'll write these in
during the tests. A scale underneath showing both the rotor angle
degrees and the e-shaft angle degrees(starting with zero on the left)
would be immensely helpful.   Far as I can tell now, my angled-in
(perpendicular to the inner housing) removable 50mm ID P-port will open
and close pretty close to Paul's straight in 46.8 ID tube. The
injectors holders are being made this week and will be test installed on
a junked housing a wee bit below the oil injection port.  The apex seal
will uncover them a few linear millimeters after the intake port is
fully opened.

My main interest in your graph is for widening it and making notes on it
during injection timing tests. It is a nice visual treat and good tool.

Cheers

Doug

Doug,
You didn't give me a lot to work with, but I improvised. I went to my degree
wheel and set it up for a  2" sloped inlet, which I estimated as approx 82
deg duration ( start to fully open)- so I showed both start and fully
opening positions, which I thought might help. I think you will find this
duration shorter even though your going bigger as the angled inlet doesn't
carry over the arc as much.  Looking at the original PP I drew it was 80 deg
duration anyway, which was an estimate of Paul's PP.

I also put in lines to show 10 degree increments, which I thought might also
help.

I estimated your IO and IC as 20 deg BTDC

What I don't have is  PP housing or degrees which the Exhaust port starts to
open and is fully open, but put in the Mazda Factory EO.

I also don't know when you intend to start injection and finish injection.

So if you can provide further info I can put some colour to the graph.
Hope it helps.
George ( down under)


Doug,
I can rehash any of those parameters for you, I just noticed that the Mazda
Factory PP opens a little later - this would give a little less over lap. I
did the 70 deg IC ABDC, off my degree wheel which is early because of the
size ( 2") and didn't want to get you into too high a compression zone, but
you could go to 75 deg or possibly even 80 deg  if you so desired. The
angled port makes this doable and the initial IO start a bit later. Still
the duration would be the same.
Consider it a work in progress
Please advise.
George (down under)