Priobe The spring for pressure is in the
oil pump unless you have a SO motor where it is in the block. I have a Shelby motor. I use the 100 psi spring and heavy duty drive in my motor because of the small rod bearings and depending on what clearances you run in the motor. I have .0025 on rods and .0028 on mains. On startup I pin the 100 psi gauge. I use my accusump as a peroiler so not to start the engine dry. It builds about 25-30 psi. I start the motor and let is idle until the oils warms a little and the gauge is not pinned. Mine idles between 30-40 hot at 750 rpm and runs between 65 -70 hot racing. It is a HV-HP pump from melling. I changed the spring to the pink one(100) If you go on the FE forumnyou can get more info. Everyone have there own ideas on this issue. I have never seen a motor break from running too much
oil pressure. FE rod bearing are not as wide as others. This is why alot of stoker kits use BBC rods, wider, different materials, and more sizes in both under and over on bearing size. I run 15w-40 or 15w-50
oil in the car with a bottle of Lucas oil suppliment. With HP-HV you will need to keep your eye on the distributor gear for wear when running this setup. If the clearances are tighter you may not need to run 80 or 100 psi. Alot of guys are running now with 60 psi and saving HP to drive the pump. Alot depends on the engine builder who check the clearances and put the motor togeather. Rick Lake Ps I like to see 20-30 psi min at idle, I am not a big fan of the 10 pound rule for every 1000 rpm. I know nascar turn there motors at 9000 rpm and the oil pressure is only in the 60's for pressure. They also don't let those motors idle for long and the motors are for 1 race.
