all black 4G63
Proven Member
- 254
- 43
- Aug 5, 2019
-
Chicago,
Illinois
Hello,
Recently I started and ran my freshly rebuilt engine that was put together 17 years ago...yes, 17 years ago i had it bored and installed JE pistons (8.5:1) and crower rods, etc. Back then all I did was assemble the complete long block and monthly poured oil down the cylinder and rotated the engine around a couple of times, never started and ran it until now.
What is happening now is I finally reached about 500-550 miles running it moderately trying to break in the motor. When I finally reached the 500 mile marker I did some red line hard pulls and my dip stick flew out and doused my engine in oil.....
My compression is cyl #1 175 psi, cyl #2 152psi, cyl#3 175psi, cyl#4 164psi - this was taken at moderate cool down, probably 100° ECT. If i do the compression test at engine off operating temp around 195° all cylinders are lower but cyl#2 in like 145psi and cyl#4 is 155psi. #1 and 3 are around 165spi. Cylinder leak down is all crank case. I am using the stick PCV system. The car is totally stock as fare as bolt on mods.
My question is how long does it normally take to wear in rings? Am I screwed here or is there anything I can do other than remove the engine and do it all over again? I mean is there a possibility these rings will seat?
Thank you for your input,
sorry if it sounds like i am in denial. ha i do mobile diag for a living, but i just don't want to believe this motor is f***ed.
Recently I started and ran my freshly rebuilt engine that was put together 17 years ago...yes, 17 years ago i had it bored and installed JE pistons (8.5:1) and crower rods, etc. Back then all I did was assemble the complete long block and monthly poured oil down the cylinder and rotated the engine around a couple of times, never started and ran it until now.
What is happening now is I finally reached about 500-550 miles running it moderately trying to break in the motor. When I finally reached the 500 mile marker I did some red line hard pulls and my dip stick flew out and doused my engine in oil.....
My compression is cyl #1 175 psi, cyl #2 152psi, cyl#3 175psi, cyl#4 164psi - this was taken at moderate cool down, probably 100° ECT. If i do the compression test at engine off operating temp around 195° all cylinders are lower but cyl#2 in like 145psi and cyl#4 is 155psi. #1 and 3 are around 165spi. Cylinder leak down is all crank case. I am using the stick PCV system. The car is totally stock as fare as bolt on mods.
My question is how long does it normally take to wear in rings? Am I screwed here or is there anything I can do other than remove the engine and do it all over again? I mean is there a possibility these rings will seat?
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Thank you for your input,
sorry if it sounds like i am in denial. ha i do mobile diag for a living, but i just don't want to believe this motor is f***ed.