djrocky

I've been bitten by the rotary bug as of late. Had a Turbo 2 a few years ago and just loved it. Anyways I've been doing some research on the use of premix on Turbo 2's and have some questions.

1. Do you still change the oil like regular after removing the omp and going premix?
2. What else gets lubricated by oil in a rotary besides the e-shaft, and rotors?
3. Do you leave all other oil related parts on the car? ie: oil pump, cooler....
4. How do you measure out the appropriate amount of oil when you fill up with gas?



This will not be a dedicated race car. Mostly a fun on the weekend/trackday car.

Thank you for any help.

Aaron Cake

iTrader: (1)

Absolutely.

Basically it's the same as a piston engine with regards to lubrication. The oil pan contains a sump of oil, which is pumped through the engine via pump under the front cover. This oil lubricates the stationary main bearings, rotor bearings, rotor thrust surfaces, irons, turbocharger and front Torrington bearing assembly. It also provides approximately 30% of engine cooling as it is the only way to cool the inside of the rotors. Jets spray oil from the eccentric shaft to the hallow casting inside the rotors. Most of these have a parallel in the piston world

In addition, a very tiny amount of oil is drawn off to feed the metering oil pump, which supplies oil to a set of 4 oil jets or "dribblers". Each rotor housing has an oil jet above the intake port which drops oil directly onto the apex seal to lubricate it as it slides across the housing. Another jet drops oil into the primary runners of the intake manifold to mix with the air/fuel charge. This oil lubricates the rotor face, apex seals, side seals, irons, housing, etc.

ABSOLUTELY! Converting to premix only eliminates the metering oil system. The remaining oil systems are still required to lubricate the majority of the engine.

One ounce per gallon.

Snack

^ win ^ but i normally do 1.3 ounces per gallon to get the perfect 100:1 ratio

djrocky

Thanks! I get it now. It basically will help your seals to last longer, and guarantee they are lubricated throughly.... Cool.

Aaron Cake

iTrader: (1)

Maybe...It's never been proven.

Spectator

iTrader: (1)

But comparison on engine wear was proven with pics. The premix housing wear was much more even than with the OMP one.
Its in a thread here somewhere but I'm too lazy to find it.

Spec.

Gene

iTrader: (1)

The premix ones were probably a lot cleaner too, since the combustion chamber is getting nice clean 2-stroke oil that's designed to burn cleanly, instead of nasty-*** crankcase oil that's designed not to burn easily.

dean23

i had my mop removed before i had my engine rebuilt. i got this handle little premix bottle from walmart that had two eperate containers. the bottom was full of premix and you would squeeze it to fill the top container. really handy and hrd to screw up. now i premix along with my mop. better safe than sorry. i also add MMO to my oil .

RotaryWeaponSE7EN

iTrader: (6)

2 cycle oil or Lucas Fuel Treatment, the lucas stuff works just as well and burns cleaner.