[DeTomaso] Techno question: a fine mess--update II

[Will Kooiman]

I don¹t see how a balancer could cause a howling or a squeal.

I had a weird squeal once, and it turned out to be the carburetor gasket.
There was a leak under the carburetor, and the gasket was vibrating like a
reed in a flute. It sounded like it was coming from the timing chain.  I
tore the front of the engine apart, changed the timing chain, belts, fuel
pump, etc.  I didn¹t find the problem until I was feeling around under the
carburetor while the engine was running.  I could feel the gasket
vibrating, and if I touched it, the sound stopped.

What was the last thing changed before the sound started?

On 10/11/15, 1:03 PM, "DeTomaso on behalf of Asa Jay Laughton"
<detomaso-bounces at poca.com on behalf of asajay at asajay.com> wrote:

>   I'm not liking where this is going.  I'd remove the balancer and run
>   it.  You might get a little oil splash past the seal but I honestly
>   don't see how it could be the balancer.  I'm beginning to fear its more
>   dastardly, like a main or rod bearing or thrust bearing on the cam.
>   Trouble is I don't think you can get the balancer off.
>   Asa
>   Sent using Jedi Mind Tricks
>
>   Charles Engles <cengles at cox.net> wrote:
>   Dear Bill and Asa, et al,
>              Test drive without the AC belt still showed noise.   While
>   the engine was still warm, I removed the alternator belt.  To my
>   surprise, the chirpy noise is still there.  The garden hose stethoscope
>   seemed to show that it was maximal within the bowl of the crank
>   pulley.   Hmmm???  No noise from the oil pan nor water pump
>   (obviously).
>              Next, I removed the crank pulley and the noise is still
>   chirping away.   I checked again that the balancer isn't hitting
>   anything on its backside and a wire hanger feeler shows nothing between
>   the back of the balancer and the front cover or oil pan.
>              Next, I could only imagine that I had somehow not torque the
>   balancer bolt well and that it was loose.  Sorry, it is tight and I am
>   sure that it has a dose of anti seize and the correct torque.
>              The balancer is a BHJ and is about nine years old with about
>   10k miles.  It looks good.  It was recently out and reinstalled last
>   year before the Houston Rally.  No noise was noticed until afterwards
>   while driving "normally" in town, etc.   Sounded like a belt, but it
>   isn't all belt noise.
>              I suppose the next step would be to loosen the balancer
>   bolt, again apply a touch of antiseize if it looks like it needs it and
>   then retorque.
>                        Warmest regards, Chuck Engles
>   -----Original Message-----
>   From: bill gaino [mailto:gaino at earthlink.net]
>   Sent: Sunday, October 11, 2015 9:09 AM
>   To: Charles Engles
>   Subject: Re: [DeTomaso] Techno question: a fine mess--update
>   Charles, I went thhrough this with a corvette it turned out to be a
>   loose harmonic balancer bolt. Big one that goes in the end of crank.
>   Bill 1362
>   https://www.facebook.com/pages/slickpaintcom/129049637149634?ref=ts&fre
>   f=ts
>   If you want it slick.  www.slickpaint.com  like us on facebook
>   -----Original Message-----
>   >From: Charles Engles <cengles at cox.net>
>   >Sent: Oct 10, 2015 9:30 PM
>   >To: detomaso at poca.com
>   >Subject: Re: [DeTomaso] Techno question: a fine mess--update
>   >
>   >Dear Forum,
>   >
>   >
>   >           It is still a fine mess.  The gremlins are well
>   entrenched.
>   >At this point, I have:
>   >
>   >1) ascertained that the balancer isn't hitting the block or pan
>   >
>   >2) been unable to localize precisely the noise source despite the
>   >mechanic's stethoscope or the garden hose stethoscope (it actually
>   >works a little better in this instance, but still not a success).  It
>   >is coming from the front of the engine-belt area.
>   >
>   >3) replaced the alternator: no change and now the ammeter needle
>   >bounces
>   >
>   >4) ascertained that I do have an electronic voltage regulator from
>   >Motorcraft
>   >
>   >5) replaced both belts: no change other than  a slight decrease in
>   >loudness and slightly different quality to the noise
>   >
>   >6) replaced the idler pulley:  no change. Sigh.   The old pulley does
>   feel
>   >like the bearing is starting to go out compared to the smoothness of
>   >the replacement, but still no noise silencing with the change.
>   >
>   >
>   >        I am perturbed.  I have removed the new AC belt and I will
>   test
>   >again tomorrow to see if I have finally localized the noise maker.  I
>   >am thinking about trying some of the belt treatments for squeaking
>   >since I have replaced *everything* at this point.
>   >
>   >
>   >        With apologies to Mr. Friedman's famous quote: " Sadder,
>   older,
>   >wiser, I go now, seeking through faith and reason combined  the answer
>   >to this baffling pageant which is the Pantera and the small by play,
>   >which is my amateur wrenching."
>   >
>   >
>   >                  Philosophically yours,  Chuck Engles
>   >
>   >
>   >
>   >
>   >
>   >
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