High Oil Pressure
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 783
Likes: 38
From: Mankato Mn
High Oil Pressure
I'm finally to the point on my 2 yr resto on a 68 vert. It came with a 396 in it. As far as I can tell it appears to be rebuilt. From the timing chain, oil pump, valves & springs, seals etc all appear brand new. It runs & sounds great. I've just noticed after running it in my shop that there is oil on the floor. No gasket leaks, it's appears that it must be coming out the dip stick tube & running down. I tried 2 oil gauges & it has 80+ lbs of pressure.I'm not an engine guy but I know this can't be good. Any ideas what is wrong with this engine ?
Safety Car
Joined: Mar 2007
Posts: 3,652
Likes: 49
From: Bridgewater nj
80 PSI on a cold big block is correct! High volume pump was installed and that's what they run cold. After warm up it will back down to 60 PSI cruisin and thats just fine. P.S. DO NOT REVVVV ENGINE WHEN COLD!!! 2000-2500rpm MAX. You can break the oil pump drive or blow out a seal. If your dip stick is coming out you should check the PCV set up.
Drifting
Joined: Aug 2005
Posts: 1,682
Likes: 3
From: League City TX
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 783
Likes: 38
From: Mankato Mn
Ok Weimer20, I did'nt have a breather on the valve cover. Taking the cap off solved that problem. I do have smoke coming out of the valve cover hole so this engine has issues. I just had a good mechanic look at it & I told him what I knew about the engine. It was froze up when i bought the car. After some WD 40 in the cylinder holes I gradually got it to turn all the way around. From there I got it running. He says that was not a good idea & will have to tear it down. I know very little about engine building. I can totally assemble & dis-assenble a C3 but thats where it ends. So any more input on my project will be appreciated
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Burning Brakes
Joined: Mar 2008
Posts: 1,038
Likes: 39
From: Denver, CO
St. Jude Donor '08-'09-'10
engine rebuilds, from a po-boys opinion- are very easy.. knowing what parts to buy is the biggest thing. other than that, cake! just make sure the seals all go in the right way or whammo!! bolt broke off in the cam, and your back to the old used one!
Race Director
Joined: Mar 2006
Posts: 14,112
Likes: 28
From: Florida
Take the pcv valve out of the valve cover while it is running and see if you get suction with your finger over the valve or hose. This will tell you if the carb baseplate is plugged. You should have quite a bit of suction.
A non functioning pcv system, depending on the amount of blowby the engine has, can puke oil out of every and any seal or gasket including blowing the dipstick right out of the tube along with a lot of oil.
Fixed this on cars many times.
Try either Marvel Mystery oil or Seafoam, follow the directions and drive the car a lot. Chances are a lot of your symtoms will clear up.
A non functioning pcv system, depending on the amount of blowby the engine has, can puke oil out of every and any seal or gasket including blowing the dipstick right out of the tube along with a lot of oil.
Fixed this on cars many times.
Try either Marvel Mystery oil or Seafoam, follow the directions and drive the car a lot. Chances are a lot of your symtoms will clear up.
Thread Starter
Burning Brakes
Joined: Jul 2004
Posts: 783
Likes: 38
From: Mankato Mn
Thanks for all your input guts. I really appreciate it, not being an engine guy like I said. The car is nowhere near ready to drive yet but I'll run it as much as I can while finishing it. I'm body work & paint this summer but don't think I'll have it done for this summers fun. Thanks again to all......