2013 Turbo Pro Oil Consumption

[Phat Cat]

Hey I have a 2013 Pro MTNTK turbo. I have measured my oil consumption and it conserns me. My sled had the oil update kit installed, injector update etc done to it. I have my oil pump screw maxed out to where the top of the screw is level with the lock nut on the throttle body. I am still only using 50 - 60 to 1 ratio. I would like at least 40 : 1. I understand that since the boost gives more power to throttle position that naturally you would use less oil with the larger injectors. So I was thinking about putting a bend in the oil pump rod so that it opens more. Maybe just mixing some oil with fuel? I am concerned about not getting enough
oil to the bottom end. Any other solutions?

 

[Rbrduk]

Is the 710 cap venting properly?

 

[Phat Cat]

Yes it is. Ive drilled a small hole on the inside of it to bypass the stupid roll over valve part.

 

[Catman10]

Mixing more oil in the tank does not give any additional lubrication to the bottom end at all, it just lubricates the top inch of the piston and will foul plugs a little more. I learned this from the owner at Mtntk himself when we had my engine apart, the injectors are in the cylinders above the reeds so the fuel goes to the top of the engine immediately, very little goes to the bottom end, people including myself thought premixing oil in the tank was smart for extra oil on a poorly designed bottom end right from the factory, that is why you see so many poo's with bottom end issues. The only way you will get extra bottom end oil is to inject it into the intake before the carbs with some sort of homemade injection port but then you will need an additional little oil tank so that you do not tax the current injection system. Hope this helps, I have lost a few hours of sleep over this issue ha ha.

 

[Phat Cat]

Makes sense. I think a little extra oil mixed in the gas would help prevent piston scuffing but you are right by saying very little of that pre-mixed oil would get to the bottom end. The oil pump is regulated by throttle position. On boosted pros the throttle is not opened as much on the trail due to the increased power.
This is why I am thinking of putting a bend in the oil pump rod so that the oil pump will pump more vs throttle position.

 

[+SLEDWRECKS+]

The Boost-it water to air kit was nice for this reason on the Polaris, as the secondary injectors are mounted in the air box.

 

[Phat Cat]

I believe the MTNTK kits for the axys are set up the same way at a cheaper price.

 

[007sevens]

I'm positive that you can get the oil consumption up with out bending the rod. I have a HM kit where I went threw an issue with an air bubble in the oil line. Oil screw turned up three or four turns. I suggest that you make sure you have no air in the line. Open the bleed screw on the oil pump and pressure the oil tank. Not a lot of pressure just a steady amount of pressure. When you feel that you have sufficiently move enough oil throw the pump to evacuate all or any air close the bleed screw. I went from using hardly any oil to about half a tank per ride by doing just what I explained.

 

[Phat Cat]

Thanks 007. I'll do exactly that and see what happens.

 

[007sevens]

Thanks 007. I'll do exactly that and see what happens.

dirty I know but I used my mouth as the pressure. I was able to hear the air being pushed out. I suggest a rag under the pump to catch the oil as your going to push out at least the amount that is in the hose leading to the pump from the tank.