Why don't you go back IN THIS THREAD and read where this was discussed already...and look at the pictures...and if you still are confused I will try and explain it to you

dannobre, It honestly is not my intent to flame anyone here but I doubt he has done any real research whatsoever. I mean 'cmon... most of this stuff you can find with a simple search.

Wow, exit stage right ...

I admit i didn't search HOURS, but searching on a cell phone is a pain in the butt, and couple of the first pages are not loading, 4-11.... i hate to say it but i admit I AM WRONG. So far with regards to pressure, and why it doesn't matter with the MOP being a Pos. Disp. PUMP. Yes i should have tried harder to find this information and i do apologize to you RIWWP for creating a debate already addressed, i will try to load those pages on a computer and continue to read.... BUT I STILL THANK YOU!

Install my Sohn adapter but the omp lines seem empty.

Have tried priming them by blocking the vacuum hose on the intaking and revving the car to 3000 rpm and letting it drop, I have also taken it on a gentle but long drive to get them to prime but they still look empty.

I have good flow between the Sohn adapter and tank so it's not an issue with the oil not getting to the adapter.

The 2t oil in the tank is red so I was expecting to be able to see it in the omp lines easily.

Any ideas?

Thats weird I haven't really looked at my OMP lines since I installed my Sohn but I have clear tubing from my reservoir to the sohn so I can visibly see the oil being injected to the adapter. Also I check the OMP position via Cobb every now and again.

But come to think about it I haven't notice a change in my OMP lines color. Currently I'm running Lucas synthetic 2 stroke in my reservoir (Blue). And I have about half a case of Idemitsu I'll be putting in once I run out of Lucas. I'll check my omp lines and see if theres blue fluid being moved thru them.

You should not need to prime it or anything, it is a pump so it will pull from the reservoir if everything is working right. The injection rate is based on load so go drive that bitch and see if it is consuming oil.

Was it consuming oil at a normal rate before you installed the SOHN?

Sorry for the late reply.

After having another crawl under the car it turns out there's oil in the omp lines, it's just the lines are stained brown and the new oil is hard to see.

Hi,
I want install sohn adapter to my s1 rx8. But some questions in my head. First, the sealing ring middle of the adapter guarantee leakproofing? second is normally oil comes OMP with oil pressure. while we install SOHN adapter, we supply unpressured oil. The oil pressure is adjusting ECU. Is it a problem? I think less oil supply is a huge problem for the wankel engine. When install sohn, is amount of supplying oil change?
Thanks a lot

There is not a pressurized feed to the stock OMP..the oil is supplied on the return side in the front cover and isn't pressurized.

The Sohn adapter will provide the same amount of oil as stock as long as you fill the container :)

I have never had leaking issues if it is installed correctly you will be fine

Thank you :worship::worship::worship:
I think sohn adapter is most clever modification of wankel engine. Think an oil, oiling cold and warm engine and going inside of combustion chamber and continue oiling without carbon residue (or minimal residue). WOW. its a lot of job for an oil and its not necessary. The tasks can be shared by seperated oils. I wondering why mazda dont do that? They know any contraindication for this?
In Turkiye we change oil every 5k km and chang 3-4 liter oil. I think its so sily. I know rx8 engine contain about 8 liter oil. I meaning we didnt change all of oil. Even when the oil changed oil looking always black. I am planning after installing sohn adapter, drain all of oil in the engine and fill motul s %100 synthetic 0w30 oil. I know lifetime of this oil is 15k km is it true? After 10k-15k km I can change all of oil with same cost. I asked sealing rings leakage for this. If seperated oils are mixing, the aplication is meaningless.
Last question, which oil to use the sohn adapter mean combustion chamber? dexelia or idemitsu or?
Thans again.

OK so got through 11 pages, i couldnt do anymore. I have a question about these adapters.

if I was looking to have the SOHN OMP can this be mounted elsewhere and the block blanked off? one this would save room for turbo manifold or piping. My initial thoughts are yes as you would be using a separate oil source, in doing this you should be able to keep the rx8 electronic OMP all that would be needed would be to make custom lines and a bracket right... Or am I missing something here...

Well, it can be blocked off pretty easily, but oil is only one of the two things the pump needs. The other is the mechanical drive. There's a geared shaft that splits off the e-shaft and that shaft is what drives the pump inside the OMP unit. So you would have to figure out some sort of electric drive motor that can vary its speed with engine RPM and has the correct reduction ratio to begin with. Certainly doable, but perhaps not as easy as you might think.

The Series2 OMP solution is exactly that -- OMP(s) removed from the block and mounted remotely, with a pressurised oil feed line.

Hello!

The first think I want to say is thanks for existing. Thanks for the time expended for all of us. I'm writing from Spain and I'm a member of a Spanish Rx8 forum. Mi car is a 2006 limited edition copper red hi-power and starting having few mods. The most important now is the sohn adapter kit. In Spain we have a lot of discussions if it's a good idea or not. I think it's well thought.

I'm going to make a question if its possible to be answered:
What happens if I put a bit of fuel in the oil tank for the sohn? I heard that idemitsu premix should be premixed first and it's not good injecting directly to the chambers. It's correct that normally all 2stroke oil should be premixed first before burning? If yes, again: what happens if in 2 liters oil deposit enters 100ml of fuel or less?

Thanks a lot to all members. I read you everyday!! ;-)

Kind regards,

Doblegota.

I wouldn't want a fuel reservoir in the engine compartment...especially in a flimsy plastic bottle 😐

the small amount of dilution this would result in wouldn't really help the issue you are describing anyway.

If you are worried....just premix it into the gas tank and be done with it

Thanks for the reply!

I actually do premix with idemitsu and idemitsu 10/30 for the car. The bottle for the 2 stroke is metallic but it has rubber pieces. So definitely you don't recommend me a preparation in a bottle a minimum % of fuel with the oil and then fill it in the oil deposit. I was only thinking in the característics of the oil. Nothing revolutionary.

Kind regards.

Ah! With your pictures of the inside parts of the omp I was havigs serious discussion with my forum! Amazing pictures.

Bye!

There is no Need to dilute anything ... use 2-Strome Oil meant for Premixing for Premixing and 2-Stroke Oil for Direct Injection in the Sohn Reservoir ... We do this for years here in Germany.


For Example:


Use Motul 710 2 Stroke for the Sohn Tank and Motul 800 2-Stroke for Premixing.


There ARE 2-Stroke Oils specially formulated for oil injection Systems ... use them in the Sohn Adapter Tank --- dont use Premix oils there as they are often not suitable for oil injection.


Greetings
Thomas

So now I have to think in 3 oils. One for the system, one for sohn and one for premix.

Both motul are prepared to be mixed in the combustion process without reactions?

I suppose that the really minimum oil from the system (idemitsu 10/30) that passes through the side seals from the eccentric shaft doesn't react with motul.

You don't recommend me using idemitsu premix for the fuel tank and motul 710 for the sohn. I have 2 bottles of idemitsu premix new. :-(

Sorry again.

How can I know the specific oil for direct injection and the premixes?

You are waaay overthinking this. It doesn't matter which oil you use in the Sohn tank, as long as it's JASO FD certified (or Idemitsu, I guess).

Traditional 2-stroke injection oils are thinner than 2-stroke premix oils, because they get injected into the fuel as it enters the engine and need to rapidly disperse before that fuel goes into the cylinder. In the rotary, the "injection" is a dribble right out on the side of the combustion chamber, so there is no dispersion necessary and it doesn't matter if you're using injection or premix oil.

Thank you so much!

I know that I'm looking stupid asking these things, but in Spain these things are decades back to your actual knowledge. In competition it's fine, but normal situation, it's hard to find answers properly done. It's very common to hear: "do it like others do". Could be right, could be wrong.

Well i suppose that idemitsu premix is enough as you're saying or motul 710.

Thanks for all and thanks for the time.
Kind regards

Doblegota

You will only receive opinions here. It would be better to ask the manufacturer directly about advice for their product

Contact Us at Idemitsu Lubricants America Corporation

Thanks a lot.

Mail sent.

It is amazing so quick and so friendly you are. Hope my car will thank to me the same as I thank to you, club!

Bye!

​​​​​As IDEMITSU dealer, we talked a lot with IDEMITSU tecnichal department about this. For us, the best combination is:
1. Fresh IDEMITSU 10W30 in Sohn tank.
2. Fresh IDEMITSU 10W30 in oil pan.
3. IDEMITSU PREMIX in fuel tank.

Use undiluted premix (any brand) is not good decision. If you email to IDEMITSU or any other oil maker, they say it. We talk with IDEMITSU, MOTUL, REDLINE, ROYAL PURPLE, CASTROL... and, generally they anwers, are allways the same: USE UNDILUTED PREMIX OIL IS NOT RECOMENDED.