Help! Small block 360 has a knocking sound
Help an old guy out here. My hearing is terrible, plus your audio is too......no offense. lol Is it ONE knock or several? If it's several, it could be exactly what I am referring to.
LOL. I'm in the same boat as you. Even with no other sounds in the background, I can ever hear these video downloads worth a crap. Even if I put my ear buds in, I just can't quite get comfortable saying what I'm hearing.
I usually don't even listen to them. But I did this one and I got nothing. If I was standing there...that would be different. But I can't even venture a decent guess. I will say that the others in this thread have given the OP the proper stuff to check.
The flex plate. Had a buddy that installed a new converter and it developed a knock about 50 miles after the change. Sounded like a Rod, but I told him beforehand to only use RED locktite on the bolts that hold the converter to the flex plate. Of course he didn't, and he had the pan off long before he even checked those bolts. And that's what his issue was.
So the flex plate to crank bolts, flex plate to converter bolts, flex plate cracks or broken pump drive on the converter are all good places to start.
I've heard fuel pumps knock too. I've seen the eccentric come loose and sound like a bottom end issue. Another bolt that demands locktite.
Could be a collapsed piston skirt, or as OMM said, a jacked up wrist pin.
Sounds travel. The OP just needs to pick a spot and start looking stuff over. And getting a stick or similar and using that to maybe help narrow down where the noise is originating from.
Wow...that's bad grammar. But it's early...
