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09-07-2009, 03:40 PM
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#1 |
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The oddest Todd around
Join Date: May 2004
Location: Miami, Florida
Posts: 1,418
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Can bad harmonic balancer cause...
Can a bad harmonic balancer cause a knocking sound? (350)
__________________
"The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY??? |
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09-07-2009, 03:58 PM
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#2 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Can bad harmonic balancer cause...
yes
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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09-07-2009, 04:18 PM
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#3 |
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Active Member
 
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Can bad harmonic balancer cause...
You should be able to look at the harmonic balancer and see if it's bad.
What kind of knock do you have? |
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09-07-2009, 04:29 PM
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#4 |
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The oddest Todd around
Join Date: May 2004
Location: Miami, Florida
Posts: 1,418
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Re: Can bad harmonic balancer cause...
Hard to describe... it was over a year ago.
It knocked above 1500rpm... while giving it gas. Would stop when I let off the gas and coasted. What size is the stock harmonic balancer? There are like... 5 billion difference sizes, and even if I upgrade the internals of the balancer... I want to keep the same size so my timing guide marker thingy still works.
__________________
"The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY??? |
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09-07-2009, 04:31 PM
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#5 |
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The oddest Todd around
Join Date: May 2004
Location: Miami, Florida
Posts: 1,418
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Re: Can bad harmonic balancer cause...
Oh... and I have it off the motor now... and there are like... little chunks of the rubber that are broken off.....?
__________________
"The greatest pleasure is to vanquish your enemies and chase them before you, to rob them of their wealth and see those dear to them bathed in tears, to ride their horses and clasp to your bosom their wives and daughters." Ghengis Khan IIOY??? |
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09-07-2009, 04:39 PM
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#6 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Can bad harmonic balancer cause...
the ones i've seen that knocked were due to wear of the center hole and wear on the crank snout . it was common on early 80's V8 and v6 motors
__________________
71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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09-07-2009, 07:47 PM
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#7 | |
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Active Member
Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
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Re: Can bad harmonic balancer cause...
Quote:
If you happened to get a balancer that's not lined up correctly, you can make a mark with a file or a metal hacksaw once you line it up with TDC. Some rubber flaking of the balancer does not necessarily mean it's bad. There's always some that breaks or flakes off these old trucks. Also, there are places that rebuild these balancers. Last, the knock you describe sounds more like a rod bearing or maybe piston slap but the balancer is a good start... Last edited by 68gmsee; 09-07-2009 at 07:49 PM. |
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