MOP Adjustments
08-24-2007, 01:50 PM
#154
Registered
Well you can see from the quality of the picture that I'm as technology challenged as you are. It started at about a 500kB size which is more than double what is allowed. I cropped some of it in Word, copied and threw it into paintbrush, and then resaved to magically be just a couple of KB under the limit. Your son would laugh his head off. Maybe next time I'll just email the original to him and ask him to deal with it.
08-31-2007, 06:25 PM
#156
well i go t the pump that was sent to me apart and got really good pics. This time I used a dreme to get all the parts separated.
MM you still have to show me how to disassemble this thing without destroying it.
Pics are too large to transfer over so I have to load them again somehow.
But in a nut shell --the sock was clean
the filter itself---Good Lord!
its a 100k pump assembly/filter with 32K using premix. You will see what i mean.
olddragger
MM you still have to show me how to disassemble this thing without destroying it.
Pics are too large to transfer over so I have to load them again somehow.
But in a nut shell --the sock was clean
the filter itself---Good Lord!
its a 100k pump assembly/filter with 32K using premix. You will see what i mean.
olddragger
08-31-2007, 08:07 PM
#157
ok here is a try https://www.rx8club.com/attachment.p...1&d=1188608726
look at them and see what yall think
olddragger
look at them and see what yall think
olddragger
Last edited by olddragger; 11-29-2009 at 09:59 PM.
09-01-2007, 11:08 PM
#161
Registered
OD, have you done any checking to see what the dirt on the filter is? Does it look remotely like rust? I am trying to understand why your gas may be dirtier than ours.
10-31-2007, 08:50 AM
#167
I have always maintained that my car uses about 1 quart per 3,000 miles. But that's an extremely rough estimate based on how much I'm down between oil changes.
Since I use the sohn adapter, and have a container that I can meter, I now know exactly what my car is burning.
On 9-01-07, I filled up my washer fluid bottle to the top marked line. The distance from the top line to the bottom is exactly one quart. My car had 45,800 miles on it.
Today on 10-31-07, my car has 46,800 miles. I checked the washer fluid bottle and I'm below the bottom line.
So in exactly 1,000 miles, I used about 1.2 quarts of oil.
Since I use the sohn adapter, and have a container that I can meter, I now know exactly what my car is burning.
On 9-01-07, I filled up my washer fluid bottle to the top marked line. The distance from the top line to the bottom is exactly one quart. My car had 45,800 miles on it.
Today on 10-31-07, my car has 46,800 miles. I checked the washer fluid bottle and I'm below the bottom line.
So in exactly 1,000 miles, I used about 1.2 quarts of oil.
11-04-2007, 10:11 PM
#170
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Location: Regina, Canada
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Controlling the RX-8 OMP
Great thread!!
I've been scratching my head on what to do about the OMP for some time now. I'm in the early phases of attempting to put a renesis in a 2nd gen and planning to use megasquirt to run things.
I'd really like to update the megasquirt code so it can drive the OMP as well. So from what I've come up with we are dealing with a Two Phase Uni-polar stepper motor.
Yellow = A1
Red = A common
Blue = A2
Black = B1
Pink = B common
White = B2
Sensor Switch pin 1-3 normaly closed but open at "max" flow.
Very, very interested in motor position observations reveal during your road testing.
I've been scratching my head on what to do about the OMP for some time now. I'm in the early phases of attempting to put a renesis in a 2nd gen and planning to use megasquirt to run things.
I'd really like to update the megasquirt code so it can drive the OMP as well. So from what I've come up with we are dealing with a Two Phase Uni-polar stepper motor.
Yellow = A1
Red = A common
Blue = A2
Black = B1
Pink = B common
White = B2
Sensor Switch pin 1-3 normaly closed but open at "max" flow.
Very, very interested in motor position observations reveal during your road testing.
11-05-2007, 04:54 AM
#171
Registered
I have always maintained that my car uses about 1 quart per 3,000 miles. But that's an extremely rough estimate based on how much I'm down between oil changes.
Since I use the sohn adapter, and have a container that I can meter, I now know exactly what my car is burning.
On 9-01-07, I filled up my washer fluid bottle to the top marked line. The distance from the top line to the bottom is exactly one quart. My car had 45,800 miles on it.
Today on 10-31-07, my car has 46,800 miles. I checked the washer fluid bottle and I'm below the bottom line.
So in exactly 1,000 miles, I used about 1.2 quarts of oil.
Since I use the sohn adapter, and have a container that I can meter, I now know exactly what my car is burning.
On 9-01-07, I filled up my washer fluid bottle to the top marked line. The distance from the top line to the bottom is exactly one quart. My car had 45,800 miles on it.
Today on 10-31-07, my car has 46,800 miles. I checked the washer fluid bottle and I'm below the bottom line.
So in exactly 1,000 miles, I used about 1.2 quarts of oil.
11-05-2007, 05:27 AM
#172
Registered
Great thread!!
I've been scratching my head on what to do about the OMP for some time now. I'm in the early phases of attempting to put a renesis in a 2nd gen and planning to use megasquirt to run things.
I'd really like to update the megasquirt code so it can drive the OMP as well. So from what I've come up with we are dealing with a Two Phase Uni-polar stepper motor.
Yellow = A1
Red = A common
Blue = A2
Black = B1
Pink = B common
White = B2
Sensor Switch pin 1-3 normaly closed but open at "max" flow.
Very, very interested in motor position observations reveal during your road testing.
I've been scratching my head on what to do about the OMP for some time now. I'm in the early phases of attempting to put a renesis in a 2nd gen and planning to use megasquirt to run things.
I'd really like to update the megasquirt code so it can drive the OMP as well. So from what I've come up with we are dealing with a Two Phase Uni-polar stepper motor.
Yellow = A1
Red = A common
Blue = A2
Black = B1
Pink = B common
White = B2
Sensor Switch pin 1-3 normaly closed but open at "max" flow.
Very, very interested in motor position observations reveal during your road testing.
11-09-2007, 01:40 PM
#173
Registered
I've measured the stroke lengths of the two cylinders in the MOP as a function of the stepping motor step number. The results are shown in the first graph. The remaining graphs are based on calculated theoretical discharges.
Last edited by Delmeister; 11-09-2007 at 01:45 PM.
11-10-2007, 04:38 PM
#174
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These reports of higher oil use with Richard Sohn's adapter vrs when using sump oil is a bit concerning. Maybe someone who knows what the oil galleries on the block do can chime in? Perhaps in the test stand tests I can raise and lower the oil supply tank to test the effect of head pressure. I'll bet Richard would have something to say about this I'll fire him an email and report back his response.
Perry
11-11-2007, 12:13 PM
#175
Registered
Perry:
I wrote Richard with this question:
Thanks for the seal information Richard, but what about the oil pressures. Your adapter requests a minimum of 6" of oil head. What pressure does the inlet of the pump see without your adapter?
His response was:
This pressure has not been measured, however, the oil enters the OMP right at the outflow of the oil into the oil pan. This can only be visualized on the actual hard ware, since a real picture of it does not exist to my knowlege.
The pump is positive displacement and it delivers oil to each outlet separately. A cam forces oil out, and if you tried to stop the flow - well pressures would get pretty high. Oil suction is by virtue of a spring pushing the pistons and cylinders apart. The effect of external pressure is one of helping the oil to flow into the cylinders.
It would be interesting to see how well the theoretical and actual oil flows compare. A sohn adapter will sure simplify the experimental setup.
I wrote Richard with this question:
Thanks for the seal information Richard, but what about the oil pressures. Your adapter requests a minimum of 6" of oil head. What pressure does the inlet of the pump see without your adapter?
His response was:
This pressure has not been measured, however, the oil enters the OMP right at the outflow of the oil into the oil pan. This can only be visualized on the actual hard ware, since a real picture of it does not exist to my knowlege.
The pump is positive displacement and it delivers oil to each outlet separately. A cam forces oil out, and if you tried to stop the flow - well pressures would get pretty high. Oil suction is by virtue of a spring pushing the pistons and cylinders apart. The effect of external pressure is one of helping the oil to flow into the cylinders.
It would be interesting to see how well the theoretical and actual oil flows compare. A sohn adapter will sure simplify the experimental setup.