For my fresh built engine, 0.5-0.7 bar @ idle when oil temp 90+ degreeC , is it little bit low at idle? When I cruising pressure has build up in normal range.
I fill in cheap oil with 5W40 for the break-in period.


I dun know is that a issue or what I should fix it ? I will add the oil cooler but I afraid of will make pressure lower. My pressure sensor located at the oil filter sandwich. built with the new oil pump from Ebay

Thanks!

 

O I L
P U M P

 

I only use new OEM oil pumps in my builds.

 

Yes, least 0,5bar more at normal idle speed and operating temperature. Low oil pressure at idle is usually caused by two possible reasons; oilpump not yield (speed x volume) enought (intake side, internal leak =clearances) or there is too much oil loss on pressure side (oil clearances, incorrect journal and bore shapes).

 

I had read the Honda manual should be read the oil pressure at oil temp. at 80 DegreeC, and I have 1.1 bar on that temperature, So, I thought that is not a big issue or worst moment. but I will keep monitor for it, If drop down more I will replace the OEM oil pump for it.
Thanks for all you guys help. Thanks