knocking noise?

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Nov 28, 2012 | 11:44 PM

MikeyZ

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knocking noise?

http://youtu.be/98d1KmHbpIU

anybody have any ideas video is with belt removed

Nov 29, 2012 | 08:23 AM

Fastdriver1992

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Quote:

Originally Posted by MikeyZ

http://youtu.be/98d1KmHbpIU

anybody have any ideas video is with belt removed

sounds inconsistant, heard the same noise in my uncles SBC last year, ended up cracking a main cap, i know its a different engine but hey its worth a shot. hows the oil pressure?

Nov 29, 2012 | 12:24 PM

MikeyZ

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really good around 60psi cold 4oish hot

Nov 29, 2012 | 12:27 PM

Ferocity02

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Is it coming from inside the engine? Almost sounds like a broken engine mount maybe. If not then it sounds like something in the the bottom end.

Any background information?

Nov 29, 2012 | 12:31 PM

MikeyZ

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I rebuilt the engine drives good around 1500 miles no misses etc last night I started hearing the noise and recorded a video sounds like passanger front or front of block

Nov 29, 2012 | 07:30 PM

MikeyZ

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wells heres a second video

http://youtu.be/vn2sqdMpvpM

Nov 29, 2012 | 08:22 PM

Ferocity02

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Doesn't sound good! In the 2nd vid I could see how much you were turning it, and it wasn't very much yet it was making a hell of a racket.

I would jack it up and have someone turn the crank while you listen. Sounds like it could almost be starter, flywheel, or clutch related. Maybe something with the timing chain. Maybe a loose rod cap.

Any metal in the oil?

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Nov 29, 2012 | 09:08 PM

slamminjim

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I would check the toque converter bolts, flexplate.
All of that aluminum amplifies the noise.
Good luck

Nov 29, 2012 | 10:06 PM

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Ferocity02

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Quote:

Originally Posted by MikeyZ

its only at a certain point it sounds like that like 15 - 20 degrees . its an auto... and not a speck of metal in the oil.

More info on this, does it make the sound for 15-20 deg per one revolution, or twice per revolution, or maybe once every two revolutions? Maybe post another vid showing you rotating the crank through one full revolution, and put the camera somewhere so it's not shaking.

Nov 29, 2012 | 10:49 PM

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MikeyZ

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it doesnt seem to be exactly the number of revolutions but degrees if I rotate it it could be once or twice before it happens again but when the sound happens I can go back and forth on that same spot unlimited... yea sorry it was balancing on my chest ill get a better video