Oil pressure drop from pan to head - SRT Forums

RVDSRT4 · 10-29-2009, 04:40 AM

After reading through posts and checking out the archives it seems as though at idle people are getting about 40-45 at the pan, 20-25 at the stock location and 5-10 at the head. That means there is about a 40psi drop from the pan to the head at idle. Which got me thinking where mine reads 0-5 at times at idle could it be that my oil pump is just a couple psi off and that is what is giving the 0 reading at times.

It seems to make sense to me but that might just be because I am tired and have put to much thought into it.

**04blusrt_4** · 10-29-2009, 08:54 AM

I have 19-20psi fully warmed up off the head, 35-40psi cruising, and around 50psi WOT.

Only thing I can think of is you used the wrong port on the head, you are using thinner oil than you should be, or you have an oil modifier in your head.

SRT Jeff · 10-29-2009, 10:07 AM

Check the how to do it off the back of block. Better reading.

**04blusrt_4** · 10-29-2009, 10:24 AM

Quote: Originally Posted by SRT Jeff

Check the how to do it off the back of block. Better reading.

Different, not better.

RVDSRT4 · 10-29-2009, 06:51 PM

Quote: Originally Posted by 04blusrt_4

I have 19-20psi fully warmed up off the head, 35-40psi cruising, and around 50psi WOT.

Only thing I can think of is you used the wrong port on the head, you are using thinner oil than you should be, or you have an oil modifier in your head.

I think your the highest oil pressure I have ever seen for idle coming off the head so far most seem to hold between 5-10.

Where did you tap into the head at?

**04blusrt_4** · 10-30-2009, 07:28 AM

There are two plugs on the driver side of block, i used the one closest to the back of the car.