View Full Version : oil pressure

05-28-2010, 05:52 AM
oil pressure starts at 80 but drops way down as engine gets hotter! I shut it off before it gos all the way down,the oil filter was collasped the last time i changed the oil?? this is a fresh rebuild don't want to burn it up.Using mobil 1 syn oil.

05-28-2010, 06:17 AM
need more imfo for people to help.
wet sump
filter type
what did u change from last year? oil pan? block?

05-29-2010, 01:27 AM
wet sump
fram 3X filter
358 chevy, had to change block do to crack.put all new bearings, gaskets ect.

05-29-2010, 05:25 AM
whats a 3x fram filter?(most likely they're junk) i would start by putting a good filter on it like a wix.seen a lot of motors lose oil pressure because of a fram

05-29-2010, 01:24 PM
I lost one of my good ford motors to a Fuxxxxx Fram Hp1 filters, i dont even put them on my every day driver. Use A Systems One.

05-30-2010, 07:58 AM
use 51061r wix racing filter that might help

05-30-2010, 04:07 PM
On the same note the engine is blowing oil out of intake manifold! I heard that chevys do that, do i have load it up with some kind of sealer. Manifold is tight!

05-31-2010, 01:17 AM
if its blowing it out in the front or back then take the intake off and replace the original gaskets with a bead of silicone will seal much better.

05-31-2010, 03:56 AM
Get the Mobil 1 synthetic out. Looses pressure with heat in my experience. I've used Valvoline VR1 20W-50 for years with no problems, and no pressure lose.
Wix 51060R or 51061R. Make sure it's the black racing filter. Fram is junk! Some may like to play roulette with the HP versions, good luck.
No oil should be coming from the intake. If someone installed the rubber strips that come with the intake gasket set, throw them away and put a bead of silicone in place of them.

05-31-2010, 05:29 AM
front and rear of manifold are fine its along the heads!

05-31-2010, 09:26 AM
front and rear of manifold are fine its along the heads!

Shouldn't leak there sounds like end rails on the block are to high. nCheck ans see if the rubber seals are in place if so pull intake throw them away and use silicone so the intake pulls down tighter on the intake flanges. I use 100% silicone CLEAR window caulking. NO LATEX.....about $3.00 a tube.

05-31-2010, 06:55 PM
Have the heads been angle milled? Was the deck surfaced? Lowering the heads and changing the angle will take some machine work.

06-01-2010, 05:32 PM
No i always used silicone have to get those rubber seals out of there.

06-02-2010, 08:37 PM
Lose the "Orange can of death"!!!! If you guys want info on filters, oils,and anything oil related go to this site,,,,, www.bobistheoilguy.com its very interesting reading