the video should work tell me what you think

http://youtube.com/Metallik695

 

what video??

 

That's a connecting rod bearing knock noise, and the squeaking noise is the piston hitting the cylinder head.

Russ Kemp

 

dont tell me that, tell me i just sucked a small kitten through the intake on accident and its trying to get out or something like that j/k

 

my dad thinks it could be a pulley anybody else's guess. i would like to try everything else before i pull the motor

 

If it's louder on the top then the bottom, it's valvetrain.

If it's rod knock it will be loudest from the bottom. The high pitch squeal sounds like pulley.

Also if it is rod knock, there WILL be metal shavings and brass colored bits in the oil. Oil pressure will fluctuate like crazy and drop well below 40 psi or even hit 0.

Also, while the transmission is disconnected, NOT a good thing to start up the car for a test of unusual sounds. Could very well be caused by the fact the transmission is disconnected.

 

thats a bearing, its way too loud to be valvetrain

 

Does it get louder as it warms up? Then it's a rod. Sounds too loud to be an accessory noise but to be sure, pull the belt and run it for a few seconds. How's the oil pressure under load? Sounds like a rod bearing to me though. It's making noise to the rhythm of the engine. That's usually a bearing. Valvetrain noise is usually half speed if it's isolated to one valve.

 

spun rod bearing
the squeal is when it spins.

 

#1 check oil for copper shavings
#2 Take front drive belt off and run.
#3 What is the oil presure doing?

It sounds to be coming from the top but like what was said before spun rod will tink the heads. Wish you best with it.

 

oil pressure was fine. oh and i know the noise isnt from not having the tranny on there because it made it while i drove it and i was thinking it was the clutch so i pulled the clutch and thought we better start it to make sure the clutch was the noise unfortunatly it wasnt

 

I've got tapping way louder than that when my lifters start acting up... It gets loud enough to hear over the radio while cranked and driving at 70mph.

I've got great oil pressure and no metal shavings, used oil analysis after the fact is fine. It's louder at the top than the bottom. A little oil treatment for noisy lifters with German Castrol 0w30 quiets mine down.

If there's no metal shavings in the oil AND the pressure is fine and healthy, I'd go with collapsing lifter. Heck even piston slap makes an ungodly noise almost as bad.

Pulley sounds like it's on it's way out, disconnect the belt and try to figure out which one isn't spinning smoothly. Belt tensioner pulley and A/C idler pulley are likely culprits.

 

would i be able to tell if a lifter has collapsed without pulling the intake, i got the valve cover off im about to pull out the pushrods and see if they are bent Thanks

 

I had a spun bearing on my older LS1 and it doesn't sound quite like that from what I remember. I jus' recently had a problem with my 3.8L V6 Daily Driver and it sounds jus' like that. Took it to a friend and said it was a lifter problem. After a few minutes of idle the noise goes away. I'm betting it's a lifter.

Also check the oil drain plug like everyone's said. If there is no metal shavings, I can't possibly see it being a spun bearing.

 

the lifters are under the heads, not the intake

 

metal shavings on the drain plug havent inspected the oil yet though

 

filtered through oil today and almost no metal in it im gonna try the lifters does anyone know a way to test the lifters

 

sounds like a loose flux cap to me! just sayin'

 

Sounds like lifter failure and sqeaking coming from the lifter roller.





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now thats more like what i want to hear, i dont know if i mentioned it but i have ls6 springs and chromoly pushrods.