Topic: normal oil pressure

[snyquist53]

i got 60 at start up.  is that alot for a 74 750

[Bob Wessner]

No, about normal, but it does depend on some things. What weight oil you are using and what the ambient temperature is. I use 10w40. When warmed up, I get about 10 lbs per thousand RPM. At startup it can run 60 if it is a warm day, or as much as 80 lbs if it is cool, such as 50 degrees or less.

[snyquist53]

i'm using honda oil 10w-30.  it is kinda hot today. 

[Bob Wessner]

10w30 is a bit light for a 750. Some even run 20w50 in the hotter climates.

[jaknight]

Hi Guys,

     I have a '74 CB750 K4.  During the "cold" months (if there is such a thing in The Valley of the Sun, Phoenix, Arizona), I use 10W40W.............. I read about 72 pounds at start up/warm up.

     As the weather heats up here, like now at 114 degs, I have already switched over to 20W50W, and though the oil is thicker, the heat more than compensates for the oil viscosity change.........  At engine start up, I am still reading the same, 72 pounds............ seems to balance out perfectly........

     By the way, I have 26,750 miles on my 750............. just a thought........

     I really feel that my engine needs the oil protection change due to the phenomenal heat here............ I think only Death Valley beats us out............

     ~ ~ ~ jaknight ~ ~ ~