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I had that problem once except it was on a Hemi so there is no valley pan. It was just impossible for oil to get there. There is no place for oil to come out of that would end up there. It was impossible. After several months I finally figured it out. I had a different problem causing big time...
Had similar issues ..... but my engine was Dyno run .... so I thought it was ready to go. When I started it there was a delay of pressure to reach the mechanical
gauge but had good pressure. First power run ....gauge went to Zero. Shut engine off on a 4th to 3rd power shift ... got good...
If you had no air bubbles what makes you believe you had air up top? You mentioned having the cam blocking air to the top.... The oil pump is what's referred to as a "positive displacement pump" which means if it's turning it will displace oil... But if it's not turning it acts as a blockage...
Ohh..well as I had the pan off, I just did pressure going into the oil galleys from the bottom? I was getting air up top. Thats when I ran the camera into the right water bank looking for air bubbles with soap water and WD and I found no leaks there. Now that won't get me to the web, but...
He's a little concerned and would like a little more hot idling oilpressure. No big deal, a lot of people are like that. It won't go up at cold idle with thicker oil because the M-63HV bypasses at around 75 psi. That's why he has 70-80 now.
I still say everything could be fine. When people get low hot oilpressure they think they have a "bad" oil pump. No. These oil pumps almost never give it up. I started a 55 year old Road Runner with the original oil pump a few months ago. The pressure relief was stuck. I don't know how much oil...
In my experience, lifter bore clearance bleeds more oil than large bearing clarances. You have proven what those in the know have said. Relief spring pressure has nothing to do with idle pressure. You've also learned that water temp and oil temp take two very different time lines to achive. The...
There is a small pump (I believe it's a 4 lobe epitrochiod type, similar to the engine's oil pump) mounted on the back of the housing, driven by the compressor's crankshaft....perhaps your pump was inoperative or it's oil pickup tube was blocked. The pressure switch should have prevented the...
Got Fuel Tank plumbed and got Fuel gauge working. Let the Charger run for 20+ minutes today! Good oilpressure and got it up to temp with no leaks. Alternator seems to be charging. Ready to pull out of shop!
Evening All
Nearing completion of my 67 gtx restoration and have run into a problem with the oilpressure warning light.
I have put an original 426 Hemi 4 speed into my gtx, an original 440 car. Purchased all new m&h hemi underdash, front engine/light harnesses and positive battery cables.
The...
1970 Ralley dash on a RR. Been having issues with either nooilpressure showing on the gauge or it pegs past 80 lbs. I am on the third sending unit and no change. Decided to change the gauge itself. Still nothing. I also have the RTE voltage limiter. And the wiring is 10 yr old M&H. I need some...
Low oilpressure at idle means oil is internally leaking faster than with factory clearance. Where? More than likely lifter bores. Possibly some extra bearing clearance as well. Can you do anything about the lifter bore short of bushing them. Or reaming for a larger lifter? No. Obviously the cam...
Your oilpressure is too low! It should be between 40 and 45 psi no matter what oil you use! I personally use the 20/50 Castrol in my 440 that was built in 98 and runs as strong today as the day it was built! Sounds like you have a weak spring in the oil pump
This is what I get for running my mouth. But at least I didn’t put any oil down.
Saturday after my second pass the engine was running rough on the return road and the oilpressure seemed a little low. But it was only 15 minutes between runs so the oil was pretty hot.
I nosed the car into the...
Whole lot of difference between 30wt and 50wt. I'm not 100% with you on this because I've been thru this. I don't like heavy oils and use straight 30wt as my limit but an hv pump will only make very marginal low rpm differences and I think he already has an hv pump on the engine. There are no...
I don't understand "bored for a bigger cam". It sounds like you are having problems with your automatic choke. This can be difficult to sort out, as it can only be done with a cold engine/carb. Low oilpressure with no loose bearing sounds could be cam bearings. Back to the mysterious "bored for...
Yes. 3 psi. I looked up a Holley switch and it says 5 psi. Wiring should be C- fuel pump, NC- starter relay/solenoid, NO- key run position. I have seen other ones that look like a plastic oilpressure switch for a light but have 3 spade terminals. If my memory is right (CRS) we never had much...
This first chart procedure was posted for me to use by someone that responded to a different post.
I used this method and it resulted in loud clatter. I don't know if it was poor lifter preload smacking valve stems because of a lack of oilpressure or valves smacking the piston. The noise did...