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View Full Version : Identify this noise (video attached)


Atlblkz06
04-23-2009, 05:10 PM
I figured I'd post this here to help someone out. It sounds like the piston but I really have no idea.

Please post if you think you know what this is. LINK:

http://www.youtube.com/watch?v=bjuGOPSvE5o
On_Her_Face
04-23-2009, 05:31 PM
I'll tell you exactly what it is. The cats got too hot, overheated, sucked back up a peice of metal into cylinder 1 and is chewing the piston, head, and scaring the block.
DirtyMechanic
04-23-2009, 05:51 PM
its was built by vengence.... thats your first problem. second... save your pennys boy that a rebuild!!!



but really. sounds like bottom end. to fast to be topend.... but then again its a video...
Atlblkz06
04-23-2009, 06:05 PM
Lingenfelter, not Vengeance lol

I'll relay the info, thanks!
VickNotic
04-23-2009, 06:51 PM
sounds like spun rod bearing
1civic
04-23-2009, 08:27 PM
Sounds like Lifters to me... :cheers:
DirtyMechanic
04-23-2009, 10:15 PM
Sounds like Lifters to me... :cheers:pssttt its cam in block...:goodjob:
Tech5
04-24-2009, 12:01 AM
I thought it was muffler bearing who knows that VID is hard to tell,maybe broke push rod, sounds more like a knock rev it up to about 9k rpms and do a vid and let us all hear it again.
DirtyMechanic
04-24-2009, 04:21 AM
^ lol 9k with a pushrod motor lol...
Frög
04-24-2009, 05:26 AM
How many miles does it have?
Atlblkz06
04-24-2009, 09:14 AM
Fresh info - it happened after a 190mph run.
No clue on the mileage. I've never even seen the car.
9kRPM? This isn't a rotary! An LS7 will hit 7k stock but this is a 454 and with an issue this big it'll definitely blow up. Wait...
DirtyMechanic
04-24-2009, 03:06 PM
whatever it is. the motor needs to be removed and torn down for a rebuild. simple as that. driving it/running it is only going to make it worse. and more expensive, because you might throw a rod through the block which means youll need rods and block. if not already. so basicly pull it quick and get it over with. might just need some machine work on the crank and some bearings. vs.... crank block rods pistons cam valvetrain... you know a crate motor.
RedEj8
04-24-2009, 04:03 PM
Sounds like a lifter or rod knock to me too.. Make sure its not a lifter before you just tear it down.
SLOWR/T
04-24-2009, 04:17 PM
Bitch sounds like cummins. DirtyMechanic said it perfect though