Tootall

iTrader: (78)

Just finished up a little while ago with KBs motor swap. Had a little trouble getting oil pressure, but after it was fired up, instant pressure, 40+

now the question, it knocked a little, (no tapping, or clacking, just a hint of hitting an extension on the side) and went away after the second 15 min cycle. I started it up, ran it for 5 minutes, and held it at 1,000. Waited 10 or so something minutes, 4 radio songs later. Cranked it again, and a whining sound started. It would only come on at low RPMs. Once it was off idle, it went away.

Now on the third start, it's pretty obvious, and doesn't go away until 2K or so. It sounds like a roots style blower, . . .noticeable or loud at idle, and gets more faint as you rev it.

KB and I both could not remember if we tightened the cam plate, but we're sure that he did the cam bolts right. Any ideas? We took a vid.

Full ARP bottom end, stock bottom end block with 14K something miles on it.

Tootall

iTrader: (78)

Horsepwraddict

iTrader: (12)

sounds ALOT like your starter isn't disengaging. Not only that but like it continues to power the motor, not just the solenoid sticking.

Tootall

iTrader: (78)

thanks, . . . didn't think about that. But I put a rod on the top of the front cover, and it's more loud at that point

KB

iTrader: (4)

I've never heard anything like it personally. When I had spun my rod bearing my Mustang it sounded like a bunch of rocks tumbling around in the block...so this is definitely new to me. What causes the starter to not disengage?

Yogi Bear

There is a one way clutch on the end of the starter shaft (called the "Bendix") that allows the starter gear to disengage from the flywheel. The bendix also prevents the flywheel from overreving the starter motor. A bad bendix will hang and prevent the starter gear from disengaging. A bad bendix can also only partially disengage and leave the starter gear rubbing the flywheel.