still no probelms with mine, increse in oil pressre too. screw the haters

 

Umm, that would be a problem. What did it increase too?

 

only about 5 psi

 

how would a slight oil pressure increase be bad?

 

^^^i was wondering the same thing, a i could see how a decrease would be bad

 

Oil pressure is the measure of the amount of oil needed to properly lubricate your engine. Too high of a pressure means too much resistance to the flow of oil. Higher pressure does not equal better protection.

Thats why I asked how much it went up. 5psi is not a big deal though.

 

i'm gonna pretend i know nothing about all this.. (fluid dynamics)

how can a better flowing filter increase oil pressure?

how does velocity of oil play a part in system pressure?

if oil is flowing at a faster rate through the engine, would this affect the temperature of the oil as well as the parts it lubricates?

at a lower temperature, does oil pressure increase?

 

Assuming all other variables remain constant, a better flowing filter should not increase OP unless you are comparing startup pressure with normal operating temp.

The relationship between pressure and flow is in opposition. If you change your oil to a thicker formula the pressure will go up. It goes up because the resistance to flow is greater and in fact the flow must go down in order for the pressure to go up. They are inversely related. Conversely if you choose a thinner oil then the pressure will go down. Assuming everything is mechanically kosher, this can only occur if the flow has increased.

If pressure was the thing that somehow lubricated your engine then we would all be using 90 weight oil. Lubrication is used to separate moving parts, to keep them from touching. There is a one to one relationship between flow and separation. If you double the flow you will double the separation pressure in a bearing.

Yes. A faster (thinner) flowing oil will move heat away from engine components (the pistons, valve areas and bearings for instance) quicker than a slower (thicker) oil.

Yes. A 0W30 has a viscosity of 40cS @ 75F, and 10cS @ 212F whereas a straight 30 has a viscosity of 250cS @ 75F, and 10cS @ 212F. At operating temps, there is no difference between the two, but at startup, the straight 30 offers over 6 times the resistance to flow as a 0W30.

 

how can oil flow slower in a positive displacement oil pump?

 

A few ways I can think of off the top of my head: temperature, pump regulators and cavitation.

 

yes but we're talking simple gear pump, no "regulator" (called a relief valve).. and cavitation only comes into play when the oil is VERY VERY heavy.. foaming is a bigger concern than cavitation.

 

Cavitation...foam....we seem to be getting off track here....lets look back to your original question:

"if oil is flowing at a faster rate through the engine, would this affect the temperature of the oil as well as the parts it lubricates?"

Be it air bubbles or foam, both will cause the oil to lose cooling efficiency. The faster your oil moves through your ENGINE (note I said engine not 'pump'), the more it cools.

Is it your position that oil flow does NOT affect engine temps?

 

oil temperature rises as velocity increases.

 

We arnt getting anywhere, are we?

What weight of oil are you running in your ride? Syn or dino?

 

lol, you two are funny

 

yeah we're going nowhere with this conversation... i'm running synthetic 5w30 which will change once the turbo is in.

 

I think you're thinking of increase in oil flow is better, not oil pressure. I'm going with HeathenBrewing, increase in oil pressure might be resistance in the system. but lower pressure isn't necessarily better. It might be a leakage/pump problem. I guess it's all relative to where you're measuring the oil pressure from?
increased only slightly though