1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

1800rpm abnormal vibration. I search nothing good came up so here I am.

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Old Apr 28, 2006 | 04:12 PM
  #1  
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1800rpm abnormal vibration. I search nothing good came up so here I am.

ok im sitting in nutreal (so its not transmission). and its warm (so its not carb).
and I have an electric fan(so its not the fan blades.) (and again its in nutreal, so its not the driveshaft., "I searched and some people did some dee dee dee anwsers.)

its not the transmission mounts. its not the rear end (this is for dee dee dee people).


whe I hold it at 1760 through 1820rpm it has excessive vibration. really quick like it is in the rotor or something.

dont say rebuild either cause the engine is not that old.....dammit I hope it wont be a rebuild.

but does anyone have an idea.

ill kick there *** if they say search or post a searched thingy cause I did.
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Old Apr 28, 2006 | 04:35 PM
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Mine does the same thing.

Did Atkins build your motor?
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Old Apr 28, 2006 | 04:41 PM
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Originally Posted by Nicholas P.
ok im sitting in nutreal (so its not transmission). and its warm (so its not carb).
and I have an electric fan(so its not the fan blades.) (and again its in nutreal, so its not the driveshaft., "I searched and some people did some dee dee dee anwsers.)

its not the transmission mounts. its not the rear end (this is for dee dee dee people).


whe I hold it at 1760 through 1820rpm it has excessive vibration. really quick like it is in the rotor or something.

dont say rebuild either cause the engine is not that old.....dammit I hope it wont be a rebuild.

but does anyone have an idea.

ill kick there *** if they say search or post a searched thingy cause I did.
Harmonic vibration.
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Old Apr 28, 2006 | 04:50 PM
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Originally Posted by $100T2
Harmonic vibration.
It's your exhaust nick, I could have told you that!

FYI. His is a J-Spec Motor, not Atkins there...
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Old Apr 28, 2006 | 05:25 PM
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you dont know if it was J spec or not.
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Old Apr 28, 2006 | 05:25 PM
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Don't know why Ralph would have lied about that...
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Old Apr 28, 2006 | 05:54 PM
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Your exhaust system is in contact with the frame and transferring the vibrations. That's my guess...
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Old Apr 28, 2006 | 09:22 PM
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Worn out muffler bearings. Happens a lot after car has more than 90k miles. Replace.
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Old Apr 28, 2006 | 09:42 PM
  #9  
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Sorry, that wasn't funny, it was like...15 years ago...
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Old Apr 28, 2006 | 09:55 PM
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Originally Posted by $100T2
Harmonic vibration.
Harmonic sympathetic vibration.
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Old Apr 28, 2006 | 11:00 PM
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Angry

cdrad


again people

dee dee dee.

thx everyone else for the right info.

cdrad im officially gonna say this but, dude
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your a friken retard, I come here for info, not jokes....
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Old Apr 28, 2006 | 11:30 PM
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lighten up kid.

Or sue me.

Last edited by cdrad51; Apr 28, 2006 at 11:32 PM.
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Old Apr 29, 2006 | 12:27 AM
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well no more stupid jokes then.
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Old Apr 29, 2006 | 05:52 AM
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But what else would you expect from a "friken retard", as you so aptly stated it, thus showing your impressive command of the language?
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Old Apr 29, 2006 | 08:43 AM
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I'm telling you, it's harmonic sympathetic vibration. That's not a joke, that's what it is. Jiminy Christmas.

(4) Law of Harmonic Vibrations

"All coherent aggregates are perpetually vibrating at a period-frequency corresponding to some harmonic ratio of the fundamental pitch of the vibrating body; this pitch is a multiple of the pitch of the atomole."

Last edited by $100T2; Apr 29, 2006 at 08:57 AM.
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