Oil Preasure

[DAVY]

Hi keep worrying about my oil preasure or lack of it on my RV8, on tick over its just above the gauge zero mark, running at 3000revs its just below 20psi, was running her with castrol GTX met some cob owners at a show and now read some old threads they advise 20/50 oil which i have just fitted with a new filter but preasure is still the same could there be a problem with the pump or could it be the engine is worn. some threads on here have said the RV8 is a low preasure engine. Rimmer Bros do a uprated preasure relief valve spring that increases preasure by 10psi has anyone fitted one and has it made a differance. Many thanks Dave.

[Sidecarbod]

Originally Posted by DAVY

Hi keep worrying about my oil preasure or lack of it on my RV8, on tick over its just above the gauge zero mark, running at 3000revs its just below 20psi, was running her with castrol GTX met some cob owners at a show and now read some old threads they advise 20/50 oil which i have just fitted with a new filter but preasure is still the same could there be a problem with the pump or could it be the engine is worn. some threads on here have said the RV8 is a low preasure engine. Rimmer Bros do a uprated preasure relief valve spring that increases preasure by 10psi has anyone fitted one and has it made a differance. Many thanks Dave.

Maybe your pressure relief valve is stuck open. You can check by undoing the bolt that holds the spring in place. The cylinder shaped lump of steel should come out with the spring.

I'd certainly try to find out what's up before running the engine again.

People do say that they are a low pressure engine but both my fairly worn out 3.5 and new 4.6 both show over 30 psi at tickover. (Same pump on both engines) I think that my pump has a high pressure spring fitted.

Pete

[Naumoff]

Dave,
Are you running a mechanical or electric pressure gauge?

Is the engine making loud clacking noises?

[DAVY]

Hi Tony electrical, no funny noise's or clanks in fact she's a very quite engine.

[Naumoff]

Originally Posted by DAVY

Hi Tony electrical, no funny noise's or clanks in fact she's a very quite engine.

The first thing I would do is install a mechanical gauge temporally under the bonnet to see if the electrical one is reading accurately.
If the engine has inadequate oil pressure is is usually noisy.
Is the pressure sending unit in an easy place to get to?
I would remove the pressure sending unit and hook the mechanical gauge up there.