Sohn OMP adapter install
 

I am a new member, but I have had my 8 for about two years. Here are some pics of my sohn adapter and reservoirs. It had about 25,000 miles on the reman. motor when I got it and has about 65,000 miles now. Hopefully this will help it live a little longer. I wish that I had installed one the day I got the car. I premixed one tank at 1/2 oz. per gallon to be safe until the air works its way out.

How did you make that bracket got any more man I need one. mines is haging on the cover of the fuse box. -_-

I just took some measurements and cut it out of aluminum. I had a metal shop cut the basic rectangle, but I did the trimming with a jigsaw and drilled the holes.

Props! very very clean install! im working on finding a OMP adapter. but they are just so dam expensive

There not expensive.

Oil inject. Pump Adpt

rotaryman13 - what's the part number on the oil container you used? I am guessing it's from US Plastics?
Thanks

P/N's of both containers would be nice. :)

I'd worry about that clear tubing between the oil tank and adapter though. Tygone and Tygone-like tubing (clear soft-rubbery stuff) melts easily. It also might be a golden opportunity to but some kind of filter in the line to prevent any dirt from plugging the oil nozzles.

Overall, nice looking install though!

Looks good but I have had a SOHN adapter for a while now and I would rethink using that tubing, it won't last very long.

Yes, everything I used came from usplastic.com. The oil container is a 1.5 quart item #10040 with the 2.25" vented cap item #11489. The washer tank is a .75 quart item # 12067 with the 1 5/8" vented cap item #12068. I used a 1 1/4" spade bit to drill the hole for the washer fluid pump. I installed the same oil reservoir and an OMP adapter on my 1st gen. RX-7 first to try it out, and it works well. Working good on the RX-8 so far, used about 3 oz. during the first half tank of gas with easy driving.

The tubing also came from usplastic. It is Tygothane C-210-A item #56410 and is advertised to be good up to 200 degrees F and says that it is suitable for use as fuel or lubricant lines. I hope it doesn't give out on me. I will let everyone know if I have any problems with it.

Cool, the combo looks great. That tubing should work for a bit but I had the same tubing from them and it became brittle and hard over time. Nice work.

I appreciate everyones positive comments. I hope that more people will install this mod since there is an easy place to get reservoirs. I enjoy watching rotaries live long and prosper.

Hey 9k, what kind of tubing did you use after the Tygothane became brittle?

rm13: thanks for the #'s!

Has anyone tried putting a level sensor in the oil tank? I'm thinking a simple open/closed switch installed at a low level in the tank could be put in parallel with the windshield washer level circuit and thus give a dash warning light.

One danger with that mounting location is the possibility of dumping 1 qt+ of oil onto the exhaust manifold.

I went with a black high temp silicone hose. I just use the reservoir to check the level.

Rotaryman13 - Thanks for this. Ordered my container :rock:

Clean install..................thanks for the part numbers. :)

I've got in mind to use a sensor off a scooter or motorcycle injection tank. I've got a couple, they are like a rubber plug with electrodes on a stick. Many are about the same length as that bottle is deep, but there are all different sizes. Not sure how to wire up to stock windshield bottle sensor though since you'll have 2 circuits and want having either open trigger the light. Need a better electronics person to figure out how to do that.

A caution in doing that: one probably can't easily mix sensor types. It sounds like the motorcycle sensor is a capacitive or conductive type. I'm pretty sure (I'll have to check) that the ww fluid sensor is a magnetic on/off switch.

^.................correct, it is magnetic and a simple on/off.

I'd like to know what size the hose fitting is on the adapter
measurement in mm is prefered

It uses .25 inch or 6.35mm inside diameter tubing.

Well I got around to installing the Sohn adaptor. Not an rx8 but anyhow.
Note: Before you connect the hose from the oil container to the adaptor, let some of the oil flow through. I did not and the oil would not flow. I pressurized the container a bit and had little bubbles come up before the oil started pumping

Jim Bob is right, it takes longer for the pump to pick up the oil if you don't prime the hose first. It still takes a while to get the air out of the metering lines though, which is why its important to premix a tank of fuel and put some miles on it prior to the install.

beautiful setup! sub'd for future use!! thanks op!

Excellent setup. Will be doing this in a month or so.

Thanks for the part # saves a bunch of experimenting.

^^+1 I'm doing this in a few weeks as well, and seeing this makes it way easier to do the install. Thanks, one question have you have any issues with heat on the tanks in that location and issues with the hose?

One more thing what type of oil are you using? I've been looking around on the forum and most what I found is people using saber and motul but that's mostly for premixing, using the SOHN adapter you would think that any good performance 2-stoke oil would do right. What you guys think?

No problems with heat and the hose doesn't seem to have gotten hard yet, but its only been on there about 2,500 miles. I am running Castrol 2T mineral-based motorcycle oil. I know two older guys who worked at the Mazda dealer during the RX-7 years, and they always said to run Castrol 20w50 in the crankcase. I have had good luck with it in my 1st gen. RX-7, 1990 Turbo II, and for 43,000 miles, in the RX-8. So when I switched to 2 stroke, I just stuck with mineral-based castrol.

props for a clean install, ive wanted to use 3 metal containers if i were to get the sohn. Washer,oil and coolant.. Then maybe if theres space mount a tiny braille battery there too.

anybody have any links to metal canisters i can use?

EDIT: i know about mazsport and i dont want to even attempt looking for a set, nor do i want to pay that absorbant price for cans.

Sounds good thanks Rotaryman13, also EricB rx8 performance sells metal containers they are the only ones I've seen aside from mishimoto and weapon-R but they are all expensive your better off doing this setup and relocating your battery to the trunk that's what I did..

I am using idemitsu with the SOHN adapter.

I wanted to use idemitsu, but it says on the Mazdatrix website not to use it with ethanol or ethanol based fuels. I have a couple of non-ethanol stations around me, but when we go out of town I have to settle for whatever. I got the castrol b/c it was cheaper and easier to obtain.

RMan, Gasoline isn't ethanol based. It has some ethanol in it (supposedly ~10%) and that amount should be fine. Also, I'm pretty sure the castrol 2 cycle is only rated tc-w3, and quite a few people on the pre-mix thread think that tc-w3 isn't good enough to help when pre-mixing so I don't know that I'd use it with the SOHN. I don't have a SOHN (yet), but I pre-mix Quicksilver PWC Full Synthetic 2 stroke oil rated ISO EGD and JASO FD. It's the good stuff :)

Though I hate walmart, they're the only place that sells JASO FD oil around here, and it's about $35/gal

Sub for reference, good stuff!

They're most likely referring to E85 and the oil falling out of the suspension. However, with the adapter it's not a premix since they are separate fluids being mixed/injected together right at carb. That's how I am looking at it. There is a youtube video comapring three different oils and how they burn. I'll post a link when I get a chance

The Castrol is rated JASO FB. I didn't think it would hurt to use the Idemitsu with E10, but I decided to stick with mineral-based. From what I have read, the new ratings only refer to low smoke and low ash because they are full synthetic. Low ash is good, but anything has to be lower ash than burning motor oil. TC-W3 is a rating used for outboard motor oils used in boats.

JASO FB is better than TC-W3, from what I understand TC-W3 isn't any help to our engines because they run at such high rpms (and aren't boats lol). The JASO FD is better than the FB though...how much did the gallon of Castrol cost?

I paid about $60 bucks for a case, which is three gallons. In response to your visitor message, I'm in Chattanooga

Oil comparison

That's pretty cool. I considered the Protek also, but Iwas trying to stay simple. I check out Pettit and a few others every so often to look for new products, but I haven't seen this yet. Makes me wanna go burn some of mine.

rotaryman13, what was the process of transferring over the washer bottle sensor and pick up to the usplastics bottle?

I used a 1 1/4'' spade bit for drilling holes in wood. Drill the hole and pop it in.

how long would a tank of that size last for sohn under city/hwy driving?
just ordering my adapter and need to find a tank for 2t

I didn't want to start a new thread so below my install.

The container is from a scooter and it iwas equipped with a sensor. The sensor ends with a nice diode inside the car. The install was done ba a local shop TRAX Racing in Poland.

I am putting there Motul 800 2T Racing which I also use for premix - 100ml per tank.

Excuse me for bad quality pictures...

http://img15.imageshack.us/img15/6199/img1459se.jpg

http://img441.imageshack.us/img441/1797/img1460vx.jpg

http://img843.imageshack.us/img843/6214/img1461s.jpg

interesting, is it possible to show us how the reservoir is mounted? and what exact model did the tank come from?

...

They use around 8oz. per tank of fuel with normal street driving. The container holds 1.5qts.

thanks for making this a no brainer. I'm off to Lowes now to buy a 1 1/4" spade.

https://www.rx8club.com/attachment.p...1&d=1367627591

I think that video of the oil comparison really isn't too scientific.

What is the temperature at the point of injection in a renesis? ~1700*F? (+- 300*F)

I could put 5 types of different engine oils in a similar test and the one that discolors immediately claim it breaks down faster/ promotes carbon deposits.