1997 Sea Doo-Rotax 787 GTX oil inj study

[AquaEye]

1997 Sea Doo-Rotax 787 GTX oil inj study​

www.youtube.com/watch?v=jtYuOYSWnvM

 

[burtshaver2021]

Would you be able to post a picture of the page from the 1 second mark of the video? It shows small in my phone and when I try to expand it, part of it is cut away

 

[AquaEye]

Would you be able to post a picture of the page from the 1 second mark of the video? It shows small in my phone and when I try to expand it, part of it is cut away

I missed a small detail, There was 2 lbs of XPS oil in support tank & 8mm line. Static pressure though it be small.

 

[AquaEye]

I missed a small detail, There was 2 lbs of XPS oil in support tank & 8mm line. Static pressure though it be small.

The "new" editing program threw me a curve ball & I mistakenly missed including some relevant info starting @ 22:51 on vid regarding pump #1.
That info is now included in this synopsis.

 

[burtshaver2021]

In a sentence or two, what are your findings concerning oil injection pumps. I know you have put a lot of work into the testing and have also summarized it very well with the video and documentation and I do apologize but I have difficulty following the summaries

 

[AquaEye]

In a sentence or two, what are your findings concerning oil injection pumps. I know you have put a lot of work into the testing and have also summarized it very well with the video and documentation and I do apologize but I have difficulty following the summaries

*RPMs have little effect on delivery. (That blew my theory out of the water).
*Delivery curves are known @ certain pump position(s) within RPM scale.
*Not using original pump. #s 1 & 3 pumps deliver more(not necessarily better? Thorough plug reads will determine.) & are more consistent in the lower RPMs. ( One of the major reason for the bench testing met)
*With #2 pump in mind, pumps can fail by neglect, not by design & as true with all mechanical "stuff". Mikuni has another solid design.
*The factory alignment setting/marks will suffice. No need to have plate mark advanced @ rest.
Have yet to determine the fuel/oil ratio @ certain RPMs. Cross that bridge after break in.
Will remove oil injectors from spare intake plate>dissection. Sell off plate to a local "premixer".
Dissection of #2 pump using chemical, thermics & dry ice. No worse than a Chinese puzzle box (along with a little of Johnnie Walker wisdom)
All this to happen @ a much later date.
Sentence or two? I tried....
The final take on this for me alone.
For a person who premixed starting from day 1 back in the early 80 till now, I'm very comfortable with this oil injection, yes sir.