hello..i want to ask you if there another way for higher oil pressure except the oil pump...thanks...

Well, the oil pump gives you maximum pressure and that is regulated by the by-pass valve on the side of the pump, say 65psi. The oil pump gears get worn and that drops the maximum pressure it can manage to start with.

 

Then you can lose it in the oil filter if the by-pass 'dirty filter' valve is set to less than that. It shoudn't be, but some oil filters are not well-made.

 

Then you lose it in the crankshaft if the bearings are worn and it flows out too fast.

 

and then what's left gets to the top of the engine for the tappets and valves.

 

So you need to have all those things working to get best pressure up to the top.

 

..and you can fiddle with the psi numbers by changing the viscosity of the oil, but that may not be a good thing as high pressure means less flow if you go to a thicker oil.

thanks alot...i was made a stupid question but...

Is there a problem with it Tioklou?

 

I've just pulled my oil pump off, cleaned it everywhere and put a washer under the spring to increase the bypass pressure slightly. I figured it was worth doing once I had the sump off...

i was thinking if there is another easier way to do this without taking the engine off and remove the oil sump...that's why....

of course your solution (adding a washer in the oil pump)is the most logical and correct one....