13BT_RX3

I have a Cosmo 13B-REW with a 12A front cover. I was considering using an externally oil source for my OMP to pull 2 cycle oil instead of engine oil. Like:
http://rotaryaviation.com/oil_injec...mp_adaptors.htm
If I set the pump to run full bore can the 12A OMP put out enough oil? Should I just use premix?

ronbros3

how does the OMP work on an FD after you go single turbo, and a STANDALONE ECU , without any provision to run the OMP???

13BT_RX3

But after browsing around the forum for a bit I decided to mod my own OMP.





I chose to use a set screw instead of using a block-off plate, because it seemed like an easy enough way to get the job done.

I installed the aux inlet nipple vertically centered on the main bore 0.325" in from the end with the actuation lever. After inspecting the passages it looked like the easiest spot to tap the supply in.

I used LOCTITE 7649 primer and 648 retaining compound to hold the threaded hardware in place.

After these mods and a thurough cleaning a rebuild was in order. Viton O'rings were chosen because of superior resistance to synthetic oils.

O'ring sizes used were:
1 x 7/32" x 13/32" (-107) - Actuation Lever Seal
1 x 3/8" x 1/2" (-12) - Drive Bushing/Retainer Seal
2 x 11/16" x 13/16" (-17) - End Plate Seals

13BT_RX3

Has anyone played with the springrate in the OMP? It seems a little soft. A stiffer spring might give more flow at higher rpms.

Is this going to be an issue? See pic.



Would the 2 cycle oil bleed into the main oil supply without a mod to install another o'ring at the shaft? If so, how will this effect the engine oil?

myfree7

What's up man? I know it's been a long *** time, but have you figured out the OMP yet? I'm looking into doing this very thing and was wondering if you've had any issues?