JJ's95B4C

I've had the hot cam installed for about two weeks. Today i notice a clack clack clack clack sound coming from my engine. I can't really tell which valve cover its coming from. Is this an indication of a loose rocker arm? I'm 100% positive i did it right the first time. Could one have come loose. This started after I was running with lower oil pressure than normal b/c of the oil I used. I barely ran with the lower oil pressure before i swapped out the oil. Please help, as i need to fix this tomorrow morning.
Thanks

Dave88LX

Spun a rod bearing!

ibanez6rg

Lifter maybe, possibly rocker.

shoebox

Post a link to your rod knock video! That will tell him for sure if that is what it is.

graham

Had you said 'click,' i'd say rocker arm.

Since you said 'clack'....... well.........

Pull the valve cover. Hell it only takes 1 minute (or less) for the drivers side.

JJ's95B4C

Uhmm...rod bearing? I hope your not entirely serious?

Dave88LX

Yeah...my videos are called clack1.mpg and clack2.mpg....I hope you have a click or a tap and not a clack.

http://paradox.shacknet.nu/dave88lx/formula/clack1.mpg

http://paradox.shacknet.nu/dave88lx/formula/clack2.mpg

shoebox

Clack2 is my favorite.

It has that classic tone and rhythm.......and you can dance to it.


I wish I had taken some sound bytes of mine. I had a few classic squeaks with it, too.

JJ's95B4C

Spun rod bearing means what...rebuild time? It doesn't quite sound like that...not as loud or constant like that.

Dave88LX

For me, spun rod bearing meant new:

Crank
pistons
rods
camshaft
lifters
oil pump

I think that's about it.

Then I went overboard and have a badarse 383 "in the works".

Dave88LX

d/p

JJ's95B4C

I'm starting to think it is the bearing. Its not coming directly from the valve covers, more like the area of the intake manifold. I'll pull the valve covers tomorrow and check my rockers. I really, really cant afford a rebuild.

Dave88LX

In person, it sounded like marbles bouncing around in my intake...

http://paradox.shacknet.nu/dave88lx/formula/knock/

JJ's95B4C

If it is just a bearing and nothing else, can it be fixed with the engine in the car, or does it need to be pulled?

shoebox

If it is a bearing, you are looking at a total tear down. Chances are, other bearings are not far behind and it usually causes some crank damage. I had to replace my crank.