bart_heemskerk

I want to convert to efi (1983 12a) Can i connect the oil lines to the manifold? I am asking this because of the vacuum in the manifold. I think it will suck much more oil than normal.
I prefer to keep the omp instead of premix

Jeff20B

iTrader: (13)

The 12A turbo, GSL-SE and all 2nd and 3rd gens have oil injectors in the rotor housings. These are exposed to vacuum and boost. Try it in the manifold and see how your oil consumption changes if at all.

steve84GS TII

Tough to say what will work good and what wont.
The EFI engines use check valves at the injectors to prevent the lines from draining and causing long term "no oil" situations when the engine restarts and the lines slowly refill.The EFI engines also have their oil injectors strategically placed so the oil gets distributed well.The injectors on the housings are obviously going to feed oil directly onto the apex seals.The injectors in the intake are directly upstream of the primary injectors,so the oil will be swept into the injectors fuel spray and mix well so complete lubrication of the rotor seals is obtained.The injectors also protrude into the intake path a little to ensure the oil doesnt just stick to the sides of the runners.
The carbed engines have a similar setup with the oil running down the side of the venturi so that when it drips,it will fall into the fuel spray exiting the bottom of the venturi and be mixed.They dont need any check valves since the ends of the lines are at the extreme top of the OMP system.They also dump ahead of the throttle plates,unlike the EFI engines,so the delivery isnt affected by engine vacuum.
I wouldnt trust the bare OMP lines simply dumping into a random spot in the intake.For assurance,Id try to duplicate the factory EFI setup,using the stock check valves/oil injectors and a location that is directly upstream of the fuel injectors.
Either that,or premix and forget the whole OMP system.If you do premix,just be sure your EFI system doesnt cut fuel injector pulsewidth 100% when decelerating.If you experience a long,drawn out high RPM decel (like coasting in-gear after a drag run) then your engine will spin several thousand times with no fuel injected, and no lubrication from the premix.

bart_heemskerk

This is a weber dcoe manifold. I gonna make two injectors in it, one in each runner. The red circle shows the omp connection i made. This pipe sticks appr 1/4 inch through the wall. What do you think of this??

trochoid

iTrader: (6)

I've seen some of the RB Holley intakes done like that. Not sure how effective it is but it should work. A rotary will run for quite a bit without a working MOP, so I wouldn't be too worried about oil starving during start up.

Latin270

Just premix!

Ghaki

Will this work

rxtasy3

iTrader: (2)

see your other thread u started 3 min after bumping this 12 yr old thread with the same question.