eliminating omp

[TitaniumTT]

I can't really comment on engine life doing it this way because my engines fail for other reasons. Idiots during emmisions tests and clogged fuel filters.

Here's what I've found though.

Using a 2-stroke fed OMP only after ~4k left the rotors with enough carbon that it needed to be cleaned ever so lightly. The blowby on the rotor from a 3/8" missing piece of sideseal was also VERY minimal.

2-stroke fed OMP and 1/2 oz/gal in the tank left the rotors dirtier than the above and the plugs foulded in about 1k miles.

I bought a case of Idemitsu from Bryan @ Rotorsports Racing. This next motor will be fed 2-stroke from the tank with 1/4oz/gal after the initial breakin of 1/2oz/gal.

That's alot of overoiling I know but it'll give me piece of mind. Mainly becuase the OMP map that was datalogged from a stock engined stock ecu'ed car shows very little OMP injection at lower loads/ rpms which is where you spend most of your time at break-in. I'll snap a screen shot of that and post it up so you can see what I mean.

I also plan on data-logging my compression results using a 250psi sender and my Motec M820. Compression tests will be done before start, after 1/2 hour of run time, after 100 miles, and then every 100 miles roughly until I crest the 1000 mile breakin mark. If I see compression start to to fall off, as I did before, then I'll ease up on the 2-stroke in the gas. My last build lost about 15 psi, from 130 after 1/2hr down to 115 after 500 miles of breakin. Nothing was gouged, all the seals looked perfect in the rear (front was the one that warped the Apex's) the only thing that we can think of is that I was just drowning the thing in oil and loosing compression that way. We'll see what happens.