Rover V8 3,9 oil pump pressure

roule

Active Member

Posts

177

Location

france

• Jun 1, 2025

• #1

HI,
I set back the timing cover and test the oil pump pressure using a wireless drill and a mechanic gauge :
I get 40 psi at max speed and 25 psi at low speed...i expect to have more with 1200/ 1500 rpm ...
i use 20W50 old car oil
What do you think ?

 

Last edited: Jun 1, 2025

kermit_rr

Very

Full Member

Posts

37,147

Location

North Shropshire

• Jun 1, 2025

• #2

20/50 is fine for the v8
Those numbers don't sound too bad but I'd be more interested in what it's like when the engine is hot with hot oil

 

roule

Active Member

Posts

177

Location

france

• Jun 1, 2025

• #3

kermit_rr said:

20/50 is fine for the v8
Those numbers don't sound too bad but I'd be more interested in what it's like when the engine is hot with hot oil

Click to expand...

That would be THE moment ...with new lifters and camshaft...hope no trouble or issue at this time

 

roule

Active Member

Posts

177

Location

france

• Jun 1, 2025

• #4

I just tighten the crank bolt with my wrench that is limited to 240 NM , i gave a little more , about 20 °, as the torque should be 270 NM ...should be OK .