Howard Jones
Supporter
What would cause the oil pressure to pulse between 55 and 40 at constant 3000 RPMS in a SBF. Already replaced oil filter. No help. 8 quarts in motor. Oil level correct, as I have a remote filter mount and oil cooler in the system it needs this much oil to be full. I am also using a 7 quart Canon road race type pan.
It also does this at idle with the same symptoms.
Everything seams OK motor wise. No unusual noises or anything like that. No leaks.
The oil pressure pulses like a heart beat about ever 7 seconds or so from 55psi down to 40psi for about 1-2 seconds. It then climbs right back to 55psi again quickly up for about 5 seconds.
Nothing has been changed in the oil system since first built 5000 miles ago. It has always run at about 55-80 psi at constant cruise speed 3000 RPMS. I just noticed this yesterday for the first time.
Any ideas?
It also does this at idle with the same symptoms.
Everything seams OK motor wise. No unusual noises or anything like that. No leaks.
The oil pressure pulses like a heart beat about ever 7 seconds or so from 55psi down to 40psi for about 1-2 seconds. It then climbs right back to 55psi again quickly up for about 5 seconds.
Nothing has been changed in the oil system since first built 5000 miles ago. It has always run at about 55-80 psi at constant cruise speed 3000 RPMS. I just noticed this yesterday for the first time.
Any ideas?