W2000 injection system

[Ageing Rotarian]

Dear all, is there any one who has delved into the delivery of the oil pump on a w2000? I have done what the book says ‘run on premix until oil comes out of the pipe’(a bit of paraphrasing) and sure enough oil comes out, not a huge amount (guess it doesn’t need much) or under any great pressure. After an engine rebuild the internals seemed to have plenty of oil residue so I am sure it was delivering but couldn’t tell you if it was too little, too much or just right.
Thanks in advance
Roy

[kanonkopdrinker]

Hi Roy

It's a Japanese two-stroke metering pump - made by Mikuni?

Yes, as you have found, oil drips out of it and I guess that's what it is supposed to do?

If you're worried about this, you could always add a little oil to the petrol for peace of mind - but run the risk of plug fouling if you add too much?

David

[fogrider]

The Norton rotaries appear to need 1 pint of oil per 450 miles. ( on average ). I tested mine years ago by checking oil consumption against petrol consumption, it did average close to 450.
After an expensive engine build it may be wise to run just on a known premix for a while and let the pump deliver exactly half a pint into a remote container and check against the mileage. If the pump was left alone, just do the mileage test for peace of mind re its' original setting.
Maybe other W2000 owners can relate how far they go on 1 pint of oil ?
Rotary engine bits are expensive !

Regards all.

[fogrider]

Ah, but the problem might then be insufficient oil going to the roter and bearings first ?
Did'nt think of that........