What causes oil pressure to fluctuate in Pontiac?
If there is a weakness within the Pontiac oil pump, Butler believes it’s the ball-type bypass valve. “If some debris or a small metal sliver gets lodged between the check ball and its seat, the ball may stick open. That can cause oil pressure to fluctuate, also routing some oil flow back toward the inlet side of the pump.
What kind of oil pump does a Pontiac use?
A note from Rocky: The Butler Performance Pro-Series oil pump is an excellent unit that we use in our own Pontiac engines. I highly recommend them for the reasons outlined in the story below. If you’re interested in purchasing one for your build, Butler offers 2 versions: A 60 lb pump and an 80 lb pump.
What should the pressure be on a Pontiac V-8?
When dealing with a typical Pontiac V-8 and production-bearing clearances, pressure at the gauge is usually 60 and 80 psi, respectively. Melling’s Select Performance oil pumps were first introduced in the early ’90s and incorporate improvements to the pump design, displacement, tolerances, materials, and coatings.
What causes the pressurization of the oil pump?
Pressurization occurs when discharge flow meets the resistance associated with forcing oil throughout the engine. Oil-flow volume increases along with engine speed, and a sprung ball-type bypass valve regulates maximum pressure.
What’s the oil pump pressure on a Pontiac?
He continues: “The M-54D oil pump is designed as a replacement for any 265-455ci Pontiac engine and uses the larger ¾-inch-diameter inlet opening. Its pressure bypass is set at 50 psi.
What kind of oil pump do I need for a Pontiac V-8?
The stock oil pump is suitable for engines producing 600 hp or 6,000 rpm, or possibly more. Most aftermarket oil pump pickup assemblies are retained by a bolt, which prevents it from working loose during normal operation.
When did Pontiac change to high flow water pump?
The early 1969 water pump was 11 bolt and measures 4″. In mid-1969, Pontiac changed to a 4.5″ water pump. If you do not have the 4.5″ model water pump or opt to upgrade to a high flow water pump, which measures 4.5″, you will need to replace your pulley as well. We stock kits with everything you need to make the change.
How do you replace an oil pump on a Camaro?
Figure 2. Oil pump removal. Use a wire around the oil pump bolts to secure them if you are scared of them dropping into the oil pan. First, prime your oil pump by pouring new engine oil through the filter on top and turning the rotor by hand.