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

[Larry - Ohio Time]

Chuck,

If you are into it this deep you may as well pull the distriditor and see
how things look. It is connected from the top of the motor to the oil pump
on the bottom. That is a good path for sound to travel.

Larry (wild ass guess dept) - Cleveland


-----Original Message-----
From: DeTomaso [mailto:detomaso-bounces at poca.com] On Behalf Of John Taphorn
Sent: Sunday, October 11, 2015 9:53 PM
To: Will Kooiman; Asa Jay Laughton; Charles Engles
Cc: MikeLDrew at aol.com; 'De Tomaso List'
Subject: Re: [DeTomaso] Techno question: a fine mess--update II

I second Will's doubt of the balancer and suggestion that you check the 
carb gasket or other possible vacuum leak.

JT

On 10/11/2015 1:05 PM, Will Kooiman wrote:
> 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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