My freshly rebuilt 235 was running great. It has about 1000 miles on it. I have been driving it a little hard lately. The other night I was getting on the freeway, and started to get on it. I dont have a tach, but I am pretty sure it was near redline before I shifted into 5th. I went about one mile til the next exit, and stopped at the first gas station to fill up. Every thing was fine when I shut her down. After I filled her up, and grabbed a bite to eat I started her up, and heard a knocking. I let it idle for a minute to try and place the noise, but the motor died. I started it back up and noticed that the car ran fine, but had a pretty loud knock that wasnt constant. It only did it mostly on idle. I drove the 2miles home and shut it down for the night.
The next day, I pulled off the valve cover and side cover. didnt see anything wrong, the valves were out of adjustment, but the noise was louder than unadjusted valves. When I started it up, everything looked fine. Then for awhile the knock went away. I tried reving it, and keeping it at idle. After a couple minutes the noise came back, but not as loud.
I have no idea what I should do next. I was thinking of pulling the motor to reseal the rear main and or oil pan. Maybe I will find my mystery knock at the same time.
Any suggestions? Cam? Wrist Pin? Rod?
