[DeTomaso] What is this engine noise?
Mike Drew
MikeLDrew at aol.com
Fri Aug 31 19:55:10 EDT 2018
Bearing noise from the front of the motor is usually the A/C idler pulley bearing (or alternator...)
Mike
Sent from my iPad
> On Aug 31, 2018, at 16:43, DAVID D GOODWIN <goodwinpantera at comcast.net> wrote:
>
> Maybe some sandpaper to all your pulleys grooves and then belt
> dressing. I hope its not a bearing in the water pump!
>
> Cheers, David Goodwin
>
> On August 31, 2018 at 1:22 PM sean mundy wrote:
> Spent a bunch more time over and under the engine without being able
> to nail down the noise.
> As a last resort I just sprayed some water on the belt. Surprisingly
> the noise disappeared!
> The belt is only a couple years old. Maybe I have it too tight. I
> need to clean up the water that slung up all over my headliner :-(
> I will let everything dry out and try it again later and see if the
> squeal noise is back.
> I will spray some water on it again and confirm that I found the
> issue. Fingers crossed!!
> From: Asa Jay Laughton
> Sent: Thursday, August 30, 2018 10:03 PM
> To: [1]detomaso at server.detomasolist.com
> Stranger things...
> Water pump
> Alternator
> A/C compressor
> My first thought was that it sounded like a bearing, but not a rod
> or
> main or cam... like a ball bearing, like maybe the throwout bearing
> in
> the trans, or a pilot bearing/bushing. Then I thought about the list
> above.
> Then I thought Les might be onto it, but you said the baffles had
> been
> removed. Then I though maybe a vacuum leak at the carb or intake,
> but
> that would typically be rhythmic.
> Be sure to let us know what you find.
> Asa Jay
> Asa Jay Laughton - W7TSC, MSgt, USAFR, Retired
> Spokane County ARES-RACES Net Manager
> ******************************
> [2]http://w7tsc.org
> [3]http://www.teampanteraracing.com
> On 8/30/2018 18:06, sean mundy wrote:
>
> At first I noticed it after it was hot. I got home and it was not
> making the noise anymore. I took the valve covers off cause it
> seemed that might be where it was coming from. Got a lot of good
> ideas of other things to check now. Thank you :)
>
> On Aug 30, 2018, at 5:55 PM, Sean Korb wrote:
> It sounds fantastic! I had the subwoofer set up so at first I was
> like
> "what noise?" But the noise could be a tiny vacuum leak too making a
> whistling noise. Maybe even whistling through the carburetor
> venturis. It's a little shocking how much noise a carburetor
> actually
> makes, automakers would build baffles and play with air box size to
> quell it. A smoke generator could show any leaks. Is the motor hot
> or cold or it doesn't matter when you hear the noise?
> I do like the baffle theory but I kind of expect it to be noisier.
> The noise also sounds very familiar... like around old cars but
> benign-ish. Honestly it seems weird to me that I don't know what it
> is.
>
> On 8/30/18, sean mundy wrote:
> I can not figure out what this noise is or where its exactly coming
> from. I've checked the rocker arms and they are all tight.
> I have roller rockers and lifters. Is this the sound if one of them
> is
> bad?
> [1][4]https://youtu.be/o4Q06VvjuWI
> References
> 1. [5]https://youtu.be/o4Q06VvjuWI
>
> --
> Sean Korb [6]spkorb at spkorb.org [7]http://www.spkorb.org
> '65 Suprang,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera
> #1382
> "The more you drive, the less intelligent you get" --Miller
> "Computers are useless. They can only give you answers." -P. Picasso
>
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> Spent a bunch more time over and under the engine without being able
> to
> nail down the noise.
> As a last resort I just sprayed some water on the belt.
> Surprisingly the noise disappeared!
> The belt is only a couple years old. Maybe I have it too tight.
> I need to clean up the water that slung up all over my headliner :-(
> I will let everything dry out and try it again later and see if the
> squeal noise is back.
> I will spray some water on it again and confirm that I found the
> issue. Fingers crossed!!
> From: [1]Asa Jay Laughton
> Sent: Thursday, August 30, 2018 10:03 PM
> To: [2][13]detomaso at server.detomasolist.com
> Stranger things...
> Water pump
> Alternator
> A/C compressor
> My first thought was that it sounded like a bearing, but not a rod
> or
> main or cam... like a ball bearing, like maybe the throwout bearing
> in
> the trans, or a pilot bearing/bushing. Then I thought about the list
> above.
> Then I thought Les might be onto it, but you said the baffles had
> been
> removed. Then I though maybe a vacuum leak at the carb or intake,
> but
> that would typically be rhythmic.
> Be sure to let us know what you find.
> Asa Jay
> Asa Jay Laughton - W7TSC, MSgt, USAFR, Retired
> Spokane County ARES-RACES Net Manager
> ******************************
> [14]http://w7tsc.org
> [15]http://www.teampanteraracing.com
> On 8/30/2018 18:06, sean mundy wrote: > At first I noticed it after
> it was hot. I got home and it was not
> making the noise anymore. I took the valve covers off cause it
> seemed
> that might be where it was coming from. Got a lot of good ideas of
> other things to check now. Thank you :)
>>
>>
>>
>>> On Aug 30, 2018, at 5:55 PM, Sean Korb wrote:
>>>
>>> It sounds fantastic! I had the subwoofer set up so at first I was
> like
>>> "what noise?" But the noise could be a tiny vacuum leak too
> making a
>>> whistling noise. Maybe even whistling through the carburetor
>>> venturis. It's a little shocking how much noise a carburetor
> actually
>>> makes, automakers would build baffles and play with air box size
> to
>>> quell it. A smoke generator could show any leaks. Is the motor
> hot
>>> or cold or it doesn't matter when you hear the noise?
>>>
>>> I do like the baffle theory but I kind of expect it to be
> noisier.
>>> The noise also sounds very familiar... like around old cars but
>>> benign-ish. Honestly it seems weird to me that I don't know what
> it
>>> is.
>>>
>>>> On 8/30/18, sean mundy wrote:
>>>> I can not figure out what this noise is or where its exactly
> coming
>>>> from. I've checked the rocker arms and they are all tight.
>>>> I have roller rockers and lifters. Is this the sound if one of
> them is
>>>> bad?
>>>> [1][16]https://youtu.be/o4Q06VvjuWI
>>>>
>>>> References
>>>>
>>>> 1. [17]https://youtu.be/o4Q06VvjuWI
>>>>
>>>
>>> --
>>> Sean Korb [18]spkorb at spkorb.org [19]http://www.spkorb.org
>>> '65 Suprang,'68 Cougar,'78 R100/7,'60 Metro,'59 A35,'71 Pantera
> #1382
>>> "The more you drive, the less intelligent you get" --Miller
>>> "Computers are useless. They can only give you answers." -P.
> Picasso > _______________________________________________
>>
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>>> --- > This email has been checked for viruses by AVG. >
> [22]https://www.avg.com
>>
>>
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> References
>
> 1. mailto:detomaso at server.detomasolist
> 2. http://w7tsc.org/
> 3. http://www.teampanteraracing.com/
> 4. https://youtu.be/o4Q06VvjuWI
> 5. https://youtu.be/o4Q06VvjuWI
> 6. mailto:spkorb at spkorb.org
> 7. http://www.spkorb.org/
> 8. mailto:DeTomaso at server.detomasolist
> 9. http://server.detomasolist.com/mailman/listinfo/detomaso
> 10. https://www.avg.com/
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> 13. mailto:detomaso at server.detomasolist
> 14. http://w7tsc.org/
> 15. http://www.teampanteraracing.com/
> 16. https://youtu.be/o4Q06VvjuWI
> 17. https://youtu.be/o4Q06VvjuWI
> 18. mailto:spkorb at spkorb.org
> 19. http://www.spkorb.org/
> 20. mailto:DeTomaso at server.detomasolist
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