EagleTalonTim
15+ Year Contributor
- 833
- 13
- Jan 10, 2007
-
Brighton,
Tennessee
Ok, here we go... Another oil pressure issue....
Almost 2 years ago, I rebuilt my engine and put in new rods, new pistons, new bearings, and everything new in the head. This was a recover from a stripped timing belt. After getting everything back together and the oil primed properly, I started the car. All was quiet for about 3 months until a lifter collapsed and I replaced the bad one with a new one. Ticking went away for about a year and started to come back slowly. I eventually installed an aftermarket oil pressure gauge and to my surprise, I was running 100+ psi oil pressure @ 4k RPM at the filter housing! (Balance shafts were removed before rebuilding engine, but never checked actual oil pressure) Thinking it was because of my MLS headgasket and me not doing the oil port mod on the head, I pulled the head, and did the oil port mod. Since this was a 6 bolt head, I figured I would not need to drill the hole any larger where the ARP head stud went through, but I did grind off the little lip that was in there around the oil passage. All this did not help the oil pressure or any lifter tick, so I did the oil filter housing mod and eventually had to clip the spring. Oil pressure in the bottom end is now 20 psi at idle, and 80 psi at 7000 RPM. With the new oil pressure setting where it was supposed to be, I drove her for another 8 months until here recently, I had a lifter completely collapse (not in the same place as the last one). So I put in some 2G lifters I bought a few years ago after cleaning them in kerosene and priming them in oil overnight. All the lifters held pressure just fine and did not bleed down at all while squeezing them with my hand as hard as I could. Once I hit the check valve in them, they had a smooth bleed down.
It seems no matter what I do, I still have a lifter tick issue and eventually a collapsed / failed lifter
Nothing in the head is heat damaged and everything is nice, clean and oily still. I just bought another oil pressure gauge to install and keep tabs on the head oil pressure. It has not come in yet, so I must wait.... One thing I have noticed is if I have the VC off and spin the motor over with the starter, the very tiny pin holes at the end of the lifter rails on the head only seep out oil....a very tiny amount. I though they were supposed to spray with pretty good force!
While I am waiting, is there anything else that I can check or change to get these fresh lifters to stop ticking?
Almost 2 years ago, I rebuilt my engine and put in new rods, new pistons, new bearings, and everything new in the head. This was a recover from a stripped timing belt. After getting everything back together and the oil primed properly, I started the car. All was quiet for about 3 months until a lifter collapsed and I replaced the bad one with a new one. Ticking went away for about a year and started to come back slowly. I eventually installed an aftermarket oil pressure gauge and to my surprise, I was running 100+ psi oil pressure @ 4k RPM at the filter housing! (Balance shafts were removed before rebuilding engine, but never checked actual oil pressure) Thinking it was because of my MLS headgasket and me not doing the oil port mod on the head, I pulled the head, and did the oil port mod. Since this was a 6 bolt head, I figured I would not need to drill the hole any larger where the ARP head stud went through, but I did grind off the little lip that was in there around the oil passage. All this did not help the oil pressure or any lifter tick, so I did the oil filter housing mod and eventually had to clip the spring. Oil pressure in the bottom end is now 20 psi at idle, and 80 psi at 7000 RPM. With the new oil pressure setting where it was supposed to be, I drove her for another 8 months until here recently, I had a lifter completely collapse (not in the same place as the last one). So I put in some 2G lifters I bought a few years ago after cleaning them in kerosene and priming them in oil overnight. All the lifters held pressure just fine and did not bleed down at all while squeezing them with my hand as hard as I could. Once I hit the check valve in them, they had a smooth bleed down.
It seems no matter what I do, I still have a lifter tick issue and eventually a collapsed / failed lifter
Nothing in the head is heat damaged and everything is nice, clean and oily still. I just bought another oil pressure gauge to install and keep tabs on the head oil pressure. It has not come in yet, so I must wait.... One thing I have noticed is if I have the VC off and spin the motor over with the starter, the very tiny pin holes at the end of the lifter rails on the head only seep out oil....a very tiny amount. I though they were supposed to spray with pretty good force!While I am waiting, is there anything else that I can check or change to get these fresh lifters to stop ticking?
Maybe switch to feeding your turbo from the ofh if you haven't? 
