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-   -   Knocking Comeing from my 350 (http://www.hotrodders.com/forum/knocking-comeing-my-350-a-113724.html)

camarodude87 04-13-2007 07:53 PM

Knocking Comeing from my 350
 
Hey guys

Alright, I got a 83 camaro, I kno it never came with a 350 but I "was told" that its a 350 out of 79z28. Ran the numbers it was a 350, anyway I have a knockin noise coming from a couple of my lifters, I tighten them up, the noise went away until I started reving up the car, the knock came back. Should I tighten them down more or what???

thanks guys
Ray

FEDDO 04-13-2007 07:58 PM

noise
 
good chance it is a couple of studs pulling out. common problem.

chiss 04-13-2007 08:17 PM

Or the lifters are collapsing. Watch over tightening you'll wipe a lobe.

Blazin72 04-13-2007 08:19 PM

Quote:

Originally Posted by chiss
Watch over tightening you'll wipe a lobe.

Unless that's already happened.

camarodude87 04-13-2007 08:28 PM

thanks for the help but can yall be explain what you mean

lookatme 04-13-2007 08:35 PM

probly wouldnt be a bad idea to adjust all your rockers. the "easy" messy way to adjust them is to do it with the engine running. just loosen one up till it just starts to tick, and then tighten it back up 3/4 to a full turn.
as far as wiping a lobe, check to see if all your rockers are moving while the engine is running

-chris

camarodude87 04-13-2007 08:41 PM

Yea I was doin that. Noise went away, startin clean up the car reving it up and stuff all of a sudden noise came back. I was Like ***...so I tighten it up again and started hearing ******* on the driverside so I tightened those up, as soon as i was gettin ready to leave the damn thing started to knock again.

lookatme 04-13-2007 08:50 PM

how far down did you tighten them ? it could be a collapsed lifter. .........maybe. if its a collapsed lifter, you might try loosening up your rockers gradually and see if they will pump back up before you retighten them.

docvette 04-13-2007 09:13 PM

Doc here, :pimp:

Is this engine Newly Rebuilt, or has it some miles on it..?

Recent Cam Change?

Recent work on the engine?

Doc :pimp:

camarodude87 04-14-2007 11:28 AM

the engine has some miles on, not sure if it was rebuilt, but i doubt it. I kno it doesnt have a stock cam cause when i try and set the timing from the book the car runs like *******.

docvette 04-14-2007 05:19 PM

Quote:

Originally Posted by camarodude87
the engine has some miles on, not sure if it was rebuilt, but i doubt it. I kno it doesnt have a stock cam cause when i try and set the timing from the book the car runs like *******.


Doc here, :pimp:

That would be a clue that the cam was going away..can't time it and clatter after adjustment.

Doc :pimp:


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