Ok here goes my question..
I have a 351 windsor engine that I put new heads,Cam.Lifters.
Heads ...> Dart Senior.
Cam...>Comp Cam......
gross valve lift .541 intake .544 exhaust
duration at .006 tappet lift 284 int 296 exh
The engine had only a few miles on it with the stock heads and the stock cam .(rebuild at 30 over )
I had no problem with the oil pressure as the engine was stock.
I changed the heads and the cam,lifters.
When I spun up the oil pump with a drill it only would come up to about 20 lbs and the drop down..
I fired up the engine and the pressure came up to about 40 psi.
I did the break in time on the cam and as the engine warmed up the oil psi dropped to about 20 at idle.
I talked to several people and they said that maybe during the installation of the new heads ,cam,lifters there might have been some carbon deposit that dropped into the pump .
I used some engine flush and that worked ....65 psi when cold.
About 50 psi when going down the track and about 25 at idle.
All was well until I took out the gear off the distributer.
I put another distributer in and oil psi was all over the place .
I did another oil engine flush and the pump seemed to come back to life.
Steady when cold 60 psi but going down the track last week I heard the lifters starving for oil and I had a look at the oil pressure gage at it was at 20 psi not enough for 6000 rpm.
I cant figure out what is going on is my oil pump on its why out ?
I have changed oil and filter several times to make sure thar was no deb re from the distributer gear that went bad on me.
I have tried several grades of oil and the last oil change was 4 liters penzoil and 1 liter Lukas oil.
That did not help with the oil pressure .
I am lost the next thing I am about to do is lift the motor and change the oil pump as that is the only why because my oil pan is a double hump and that is the only why I can get a new oil pump in.
If you think I have missed some thing let me know.
Thanks for any info in advance.......Ray.
I have a 351 windsor engine that I put new heads,Cam.Lifters.
Heads ...> Dart Senior.
Cam...>Comp Cam......
gross valve lift .541 intake .544 exhaust
duration at .006 tappet lift 284 int 296 exh
The engine had only a few miles on it with the stock heads and the stock cam .(rebuild at 30 over )
I had no problem with the oil pressure as the engine was stock.
I changed the heads and the cam,lifters.
When I spun up the oil pump with a drill it only would come up to about 20 lbs and the drop down..
I fired up the engine and the pressure came up to about 40 psi.
I did the break in time on the cam and as the engine warmed up the oil psi dropped to about 20 at idle.
I talked to several people and they said that maybe during the installation of the new heads ,cam,lifters there might have been some carbon deposit that dropped into the pump .
I used some engine flush and that worked ....65 psi when cold.
About 50 psi when going down the track and about 25 at idle.
All was well until I took out the gear off the distributer.
I put another distributer in and oil psi was all over the place .
I did another oil engine flush and the pump seemed to come back to life.
Steady when cold 60 psi but going down the track last week I heard the lifters starving for oil and I had a look at the oil pressure gage at it was at 20 psi not enough for 6000 rpm.
I cant figure out what is going on is my oil pump on its why out ?
I have changed oil and filter several times to make sure thar was no deb re from the distributer gear that went bad on me.
I have tried several grades of oil and the last oil change was 4 liters penzoil and 1 liter Lukas oil.
That did not help with the oil pressure .
I am lost the next thing I am about to do is lift the motor and change the oil pump as that is the only why because my oil pan is a double hump and that is the only why I can get a new oil pump in.
If you think I have missed some thing let me know.
Thanks for any info in advance.......Ray.