vicious525E

for a daily drive, or close?

RotaryEvolution

iTrader: (30)

not much at all, you could try and find several 10-12 ounce bottles and just fill them with your choice of 2 stroke oil and dump one of them into your tank before adding a tank of gas, the gas will mix up the gas fairly thoroughly just entering the tank and driving will finish the job.

Pinfield357

ive been doing it for about a year now and it only adds about a min to your fill up time so its not really a pain

but you just have to learn to ignore the ppl at the station that tell you your an idiot for puting two stroke oil in your gas

patman

iTrader: (3)

it is somewhat of a PITA, but not too awful bad. if you don't like it, check this out:

https://www.rx7club.com/rotary-car-performance-77/diy-2-stroke-mop-write-up-pics-372329/

pat

RotaryEvolution

iTrader: (30)

nice writeup but a MOP is for the kitchen, an OMP (oil metering pump) is for the engine.

sorry i couldn't resist.

casio

for me, it was a pain, at first, to find a funnel. wal mart offers a great one, though. i also had to find a bottle with ounce increments on it. i found on at a motorcycle accessory store, but i'm not a fan of it. the process s kind of messy. its not "messy," really, but 2-stroke will leak on the side of the bottle since it doesn't pour 100% perfectly. it could be a step cleaner, but i wouldn't really call it a pain in the ***.
i still wonder if it's legal, though..

RotaryEvolution

iTrader: (30)

it's perfectly legal, oil does not deteriorate the ozone but hydrocarbons on the other hand do. i would be more concerned about having a SAFC or standalone on your dash and explaining to a cop what that does or if he is knowledgable on it. the only way it may be illegal is if you are running too much premix in your gas and excessively smoking going down the road. running a 100:1 mix is hardly noticable if you could even tell.

Attila the Fun

iTrader: (1)

I'll agree with that. I just fill several small containers with 300 ml. each and fill up whenever I get down to 1/4 tank. I just stick the neck of the container in the filler pipe and go through the steps to get the gas pump ready to go. By the time it's ready, the oil has drained into the tank.

Ice_Wolf

What's the point of premixing anyways?

rotarymarine

For me it was a way to simplify my installation. Not only were you minimizing the amount of oil that the rotary burns but you are taking off a couple of more vacuum hoses, making it look cleaner, and probably the more important part...preventive maintance.. From what I had herd on these forums is that they could possibly fail thus destroying the engine. Rotary Aviation sells some electric aftermarket ones but they were too expensive. Just a thought though. Other people might have different opinions.

ddub

Har har. It's funny how everyone on this forum calls it an OMP when the FSM and Mazda calls it a METERING OIL PUMP (MOP). I still don't know how or why everyone started calling it an OMP, but oh well...

As for if it's a pain in the ***, isn't for me. When my gas starts to get low I fill up my bottle of 2-stroke and then put it in my glove box, no biggie.

vicious525E

dont quote me on any of this, but i think the omp cant keep up past 8 grand, which isnt that important, but appearently i would have to switch my front cover and omp to put the TII s5 motor i just baught in my s4 car woe is me

patman

iTrader: (3)

thanks, dDuB, you have no idea how much **** i get for calling by the correct abbreviation. read the FSM before you laugh at me, damnit!

pat

ddub

Yah I hear ya. I say MOP every time I post about it but no one has ever given me ****. I just get annoyed that people called it the OMP all the time. Oh well

sudseh

From not running premix (with stock metering) to running premix (with stock metering), my engine seems to run much smoother from idle to redline. *shrug*
I can feel the vdi kick in at 5500rpm running premix... not running premix, it's only a slight bump.

~suds

twistedriver

I hook a 5 gas reader on my car while running premix. The gas reading was still really low. If the premix did something i couldn't tell. And it doesn't damage CATs. Since i been running premix for a year now and i still pass smog with the same cat.

DerangedHermit

I would say it's mostly for 2 things: reliability (assuming you're not an idiot and forget about it), and cleanliness. The MOP (you're welcome dDub) can fail without you really knowing it (S4 not putting you in limp mode) thus not lubricating the engine very well. With premix, you know the lubrication is always there. The other major factor in my mind is the cleanliness of it. People seem to agree (although still debated) is that it leaves less carbon deposits on your rotors because it's made to burn unlike the regular motor oil that's put in there by the MOP.

patman

iTrader: (3)

thats why i use 2-stroke oil for my MOP!!

but yes, youre right, if it failed at 8k, i'd be fucked.

then again...if i forgot to premix like an idiot...which knowing me i would...i'd still be fucked.

pat

patman

iTrader: (3)

[Quote/]I hook a 5 gas reader on my car while running premix. The gas reading was still really low. If the premix did something i couldn't tell.[/Quote]

as far as emissions...premix or my way should be cleaner than stock MOP...motor oil is not meant to be burned....2-stroke is...also not as much of it burns at once...it doesnt actaully take part in the combustion process, but seperates from the fuel and coats the parts....then afterwards it degrades and burns.

pat

ddub

I <3 premix

RotaryEvolution

iTrader: (30)

lol sorry, though the FSM may call it a metering oil pump it is incorrect english so i guess we are laughing at mazda not at you.



btw, the MOP is not necessarily going to blow your motor if it fails but if you don't recognize that it is failed then it possibly could do damage. i forgot to install the rod for my MOP when i reassembled the engine, i drove the car for a few days without knowing it wasn't even hooked up and i did pull full boost a few times and drove it semi hard but no problems arose, i also found it fitting that i just left it disconnected and ran premix instead.

casio

thank you very much for that. heh, i never would have expected to have gotten such a good response. its actual technical. might i ask what you run? i usually run 1ounce per gallon at most. i don't know the breakdown of 2-stroke, but i figured it wasn't very clean (of course, 1ounce per gallon isn't much). i deprived my engine of 2-stroke (ran a very "lean" mixture) when i was going through emissions just to be on the safe side.
what kind of emission numbers were you putting out? i miss having access to a 5 gas analyzer.

patman

iTrader: (3)

shouldnt be too hard to figure out that 2-stroke is cleaner than motor oil...the stock MOP injects at a ratio of 100:1, which is the same as most people premix, and obviously 2-stroke is designed for burning, so will burn cleaner.

NZConvertible

Most people know I'm pretty picky about calling things by their correct name (5th & 6th ports? Please...), but in this case "metering oil pump" is just bad English on Mazda's part. Oil metering pump is what it should be called.

ddub

What it SHOULD be called and what it IS called are two different things