SOHN vs stock oil pressure for OMP
01-12-2011, 09:59 AM
#51
If I were engine gases and wanted to get to the oil pan, how would I do it....... hmmmmm..........
I would probably sneak past the side seals, the side rings, the rotor gears, and follow the oil back to the pan after it is done cooling the rotors.
I would probably sneak past the side seals, the side rings, the rotor gears, and follow the oil back to the pan after it is done cooling the rotors.
01-12-2011, 10:18 AM
#52
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This is the best I could find from an FC
http://www.flickr.com/photos/9krpmrx8/5349513412/
02-10-2011, 12:41 PM
#54
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MazdaManiac has been using a Sohn OMP Adapter on his boosted Renesis for YEARS and, IIRC, using Idemitsu with it.
I have been using a Sohn OMP Adapter for YEARS with my ported/nitroused Renesis and I have mainly used Royal Purple 2-Stroke with it (and an occassional excursion with any 2-stroke I can get my hands on, like Pennzoil/Walmart stuff).
BHR has the Sohn OMP Adapter placed third on our list of highly-suggested mods for the RX-8.
If cold temps are an issue, you can use snowmobile 2-stroke like I did back in MI, and I used Yamaha stuff (sometimes the "pro" oil) as it is made for injection systems AND extremely low temps.
What more need be said?
I have been using a Sohn OMP Adapter for YEARS with my ported/nitroused Renesis and I have mainly used Royal Purple 2-Stroke with it (and an occassional excursion with any 2-stroke I can get my hands on, like Pennzoil/Walmart stuff).
BHR has the Sohn OMP Adapter placed third on our list of highly-suggested mods for the RX-8.
If cold temps are an issue, you can use snowmobile 2-stroke like I did back in MI, and I used Yamaha stuff (sometimes the "pro" oil) as it is made for injection systems AND extremely low temps.
What more need be said?
So Charles, may i order the Sohn through u now? together with quality hoses and a customised reservoir or something of the like... (so i dont have to go through the hassle of finding and fixing one up)...
02-10-2011, 12:47 PM
#55
If you need a new Sohn... just go here,
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
To find a good reservoir, I went to usplastics.com
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
To find a good reservoir, I went to usplastics.com
02-12-2011, 09:26 PM
#56
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If you need a new Sohn... just go here,
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
To find a good reservoir, I went to usplastics.com
http://www.rotaryaviation.com/oil_in...p_adaptors.htm
To find a good reservoir, I went to usplastics.com
Thanks a bunch RWD+LSD=Zoom!
Was looking more for bro's m4f1050 reservoir cans....
02-21-2011, 11:38 AM
#57
I have now been running the sohn for several months. It appears that I havent even touched the premix in my reservior. I have been premixing in the fuel about 4oz per 12 gal.
I have read through a few threads about the position sensor, but I am completely lost here on where the senor needs to be. I am going to clean all the connections with contact cleaner bc I had a small leak at first from the reservior tank which left the omp and sensor contacts very dirty. I am sure thats not just going to fix my issue so I am asking for help
I have read through a few threads about the position sensor, but I am completely lost here on where the senor needs to be. I am going to clean all the connections with contact cleaner bc I had a small leak at first from the reservior tank which left the omp and sensor contacts very dirty. I am sure thats not just going to fix my issue so I am asking for help
02-21-2011, 11:40 AM
#58
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I have now been running the sohn for several months. It appears that I havent even touched the premix in my reservior. I have been premixing in the fuel about 4oz per 12 gal.
I have read through a few threads about the position sensor, but I am completely lost here on where the senor needs to be. I am going to clean all the connections with contact cleaner bc I had a small leak at first from the reservior tank which left the omp and sensor contacts very dirty. I am sure thats not just going to fix my issue so I am asking for help
I have read through a few threads about the position sensor, but I am completely lost here on where the senor needs to be. I am going to clean all the connections with contact cleaner bc I had a small leak at first from the reservior tank which left the omp and sensor contacts very dirty. I am sure thats not just going to fix my issue so I am asking for help
Did you see my thread about this issue? I doubt it is the position of the sensor.
02-21-2011, 11:46 AM
#60
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02-21-2011, 11:48 AM
#62
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Did you read the thread? Your issue and mine were identical, now my engine is drinking 2 stroke again like it's going out of style. In the meantime, until you get this fixed, premix heavily.
03-20-2011, 11:09 AM
#65
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been looking into this mod a little bit lately and had an idea regarding cold 2 stroke oil, unless this has already been discussed or tested. As far as OMP supply pressure wouldn't you also want the 2 stroke reservoir to breathe to avoid a vacuum working against OMP as oil is consumed.
Not sure this would be necessary due to the slow speed at which the injected oil is used, Oil near the pump would probably be heated from proximity to engine before it was pumped. Also, not sure of 2 stoke viscosity at lower temperatures.
Go one of two routes:
1. Perform throttle body bypass mod on the coolant line
2. Add a additional loop in the throttle body coolant line
use the warm engine coolant to heat the 2 stroke reservoir and 2 stroke oil supply lines by:
1. Storage tank with built in heat exchanger loop
2. Run 2 stroke coolant supply lines parallel to OMP supply lines to heat oil in supply line.
Not sure this would be necessary due to the slow speed at which the injected oil is used, Oil near the pump would probably be heated from proximity to engine before it was pumped. Also, not sure of 2 stoke viscosity at lower temperatures.
Go one of two routes:
1. Perform throttle body bypass mod on the coolant line
2. Add a additional loop in the throttle body coolant line
use the warm engine coolant to heat the 2 stroke reservoir and 2 stroke oil supply lines by:
1. Storage tank with built in heat exchanger loop
2. Run 2 stroke coolant supply lines parallel to OMP supply lines to heat oil in supply line.
Last edited by EdwardsB; 03-20-2011 at 11:21 AM.
03-20-2011, 11:29 AM
#66
The pour point of idemitsu is -39C.
http://www.ilacorp.com/images/web_premix.pdf
You have a solution in search of a problem.
http://www.ilacorp.com/images/web_premix.pdf
You have a solution in search of a problem.
03-20-2011, 11:38 AM
#67
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EdwardsB,
I had thought about this but after doing some pour tests, I found most of the Jaso rated 2 stroke I have used flows really well when cold. Especially the Idemitsu, it is very thin. It's a good idea if you spend a lot of time in cold weather but you would need a custom reservoir. For me though it rarely gets cold so it's a non issue.
I had thought about this but after doing some pour tests, I found most of the Jaso rated 2 stroke I have used flows really well when cold. Especially the Idemitsu, it is very thin. It's a good idea if you spend a lot of time in cold weather but you would need a custom reservoir. For me though it rarely gets cold so it's a non issue.
03-22-2011, 01:07 PM
#68
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EdwardsB,
I had thought about this but after doing some pour tests, I found most of the Jaso rated 2 stroke I have used flows really well when cold. Especially the Idemitsu, it is very thin. It's a good idea if you spend a lot of time in cold weather but you would need a custom reservoir. For me though it rarely gets cold so it's a non issue.
I had thought about this but after doing some pour tests, I found most of the Jaso rated 2 stroke I have used flows really well when cold. Especially the Idemitsu, it is very thin. It's a good idea if you spend a lot of time in cold weather but you would need a custom reservoir. For me though it rarely gets cold so it's a non issue.
but ure sure not too WOT when ust starting the car rightz? texas is warm and hot in the day.. but what about at night? any issues?
03-22-2011, 01:50 PM
#69
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Well for right now it doesn't get any colder than 70F or so in my garage and the Kawasaki 2 stroke I am using flow really well at room temp. I would imagine if it gets really cold at night it would thicken but honestly, if you idle the car until it is warm, the 2 stroke would be plenty warm. I don't think much oil is being injected at idle anyway.
03-23-2011, 06:14 AM
#70
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Well for right now it doesn't get any colder than 70F or so in my garage and the Kawasaki 2 stroke I am using flow really well at room temp. I would imagine if it gets really cold at night it would thicken but honestly, if you idle the car until it is warm, the 2 stroke would be plenty warm. I don't think much oil is being injected at idle anyway.
yeeehaw !!! thanks for the feedback....
so who has tried putting their 2T with Idemitsu premix ?
**Confirm that we cant use other than 2T for this setup? What about still using the same engine oil as we put in our car?
06-17-2011, 02:02 PM
#71
When I look at this: http://en.wikipedia.org/wiki/Pump
or this: http://en.wikipedia.org/wiki/Metering_pump
or on the countless the threads I've found on RX8Club mentioning OMP, I can't find a functional description for pump itself .
After what I've understood, oil to OMP is fed from oil pressure line, anything between 60 and 90 PSI after what I can see. In this case I can understand how you dont need anything else, OMP just has to "open its mouth" and pass on the desired amount of oil.
I don't understand how it doesn't matter that you go from quite high feeding- pressure to almost zero when you have an external reservoir and a Sohn adapter.
Schooling will be much appreciated.
06-17-2011, 02:09 PM
#72
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Is there any threads, sites on net or similar that describes how the OMP really works?
When I look at this: http://en.wikipedia.org/wiki/Pump
or this: http://en.wikipedia.org/wiki/Metering_pump
or on the countless the threads I've found on RX8Club mentioning OMP, I can't find a functional description for pump itself .
After what I've understood, oil to OMP is fed from oil pressure line, anything between 60 and 90 PSI after what I can see. In this case I can understand how you dont need anything else, OMP just has to "open its mouth" and pass on the desired amount of oil.
I don't understand how it doesn't matter that you go from quite high feeding- pressure to almost zero when you have an external reservoir and a Sohn adapter.
Schooling will be much appreciated.
When I look at this: http://en.wikipedia.org/wiki/Pump
or this: http://en.wikipedia.org/wiki/Metering_pump
or on the countless the threads I've found on RX8Club mentioning OMP, I can't find a functional description for pump itself .
After what I've understood, oil to OMP is fed from oil pressure line, anything between 60 and 90 PSI after what I can see. In this case I can understand how you dont need anything else, OMP just has to "open its mouth" and pass on the desired amount of oil.
I don't understand how it doesn't matter that you go from quite high feeding- pressure to almost zero when you have an external reservoir and a Sohn adapter.
Schooling will be much appreciated.
https://www.rx8club.com/showthread.p...&highlight=omp
06-18-2011, 05:59 PM
#75
I had a look at this thread before, but stopped too soon. Last time I stopped reading because it looked like it was only a description of inputs and outputs, not going into the pump itself. Took me some time to get that it was the step- motor who was powering pistons, I thought it was controlling some kind of hydraulic slide, or similar.