Driver 318 cam/valve issues?
I'm in the process of giving my barracuda a valve job, removing the heads and cleaning everything. I verified it has a sticking valve with a piece of paper getting sucked to the exhaust test. The engine was ran with a badly rusted gas tank and red particulate for a while which I blame for bad carbon buildup. It had strong vacuum, if not a steady vacuum, so I didn't suspect other issues. It ran pretty strong except for a seemingly random misfire at low rpms and a lot of water and soot in the exhaust, with some oil burning especially when cold, and gas mileage much lower than expected (~13). The entire fuel system up to the manifold has been replaced under my care.
Engine idling:
Would you suspect other issues?
Soot is probably carbon buildup in the valvetrain but could the water be another issue?
Once I got the manifold off, I looked at the cam and the wear patterns concern me. Some of the lobes are worn across the top. How normal is this? I have not yet looked at the lifters.
If the cam and lifters need replaced, what is the OEM lift/duration? This car is a driver/cruiser and I like the low end torque. It shouldn't see high RPMs often.
I have several books including the Plymouth service manual but not the experience of building and tuning one myself. Trying to get the latter.
I'm in the process of giving my barracuda a valve job, removing the heads and cleaning everything. I verified it has a sticking valve with a piece of paper getting sucked to the exhaust test. The engine was ran with a badly rusted gas tank and red particulate for a while which I blame for bad carbon buildup. It had strong vacuum, if not a steady vacuum, so I didn't suspect other issues. It ran pretty strong except for a seemingly random misfire at low rpms and a lot of water and soot in the exhaust, with some oil burning especially when cold, and gas mileage much lower than expected (~13). The entire fuel system up to the manifold has been replaced under my care.
Engine idling:
Would you suspect other issues?
Soot is probably carbon buildup in the valvetrain but could the water be another issue?
Once I got the manifold off, I looked at the cam and the wear patterns concern me. Some of the lobes are worn across the top. How normal is this? I have not yet looked at the lifters.
If the cam and lifters need replaced, what is the OEM lift/duration? This car is a driver/cruiser and I like the low end torque. It shouldn't see high RPMs often.
I have several books including the Plymouth service manual but not the experience of building and tuning one myself. Trying to get the latter.
