<VV> Odd sound - update
Bob Gilbert 1
bgilbert at gilberts-bc.ca
Wed Apr 16 19:36:53 EDT 2014
I've got 185 plus or minus a couple in each cylinder and the sound stays consistent. I'm hoping the arrival of the borescope next week will identify any internal cylinder damage, for whatever reason.
I did view one Corvair video where the sound - which was very like mine - was attributed to a broken (or leaking?) manifold. I can't imagine an exhaust sound like that so I was wondering if anybody else has heard anything like that?
From: shortle [mailto:shortle556 at earthlink.net]
Sent: April 16, 2014 2:12 PM
To: Bob Gilbert 1; virtualvairs at corvair.org
Subject: Re: <VV> Odd sound - update
If it was a valve seat issue you would know by your compression test results. Does the odd sound stay consistent? Could something have fallen into the cylinders?
Timothy Shortle in Durango Colorado 81301
>From: Bob Gilbert 1 <bgilbert at gilberts-bc.ca>
>Sent: Apr 16, 2014 4:10 PM
>To: virtualvairs at corvair.org
>Subject: <VV> Odd sound - update
>A few day ago I requested some help with a sound like a lifter noise
>but with a sharper, "metallic" rap in my recently built (<500 miles)
>Several people suggested a problem internal to the engine so I removed
>"the top" of the engine, carbs on down to and including the turkey roaster.
>Nothing is loose and there are no visible marks and no signs of part A
>hitting part B and no sign of any foreign material.
>I can turn the engine over easily by hand and there is no indication of
>anything touching or obstructing anything.
>And of course, with no plugs I can also spin it over quite fast with
>the starter and still no unusual sound or vibration!
>If it was a valve seat issue you'd think I be able to hear it.
>I am stumped and the only thing I can think of is a lifter problem that
>doesn't show up under these circumstances.
>Is that possible?
>Any other ideas or suggestions most welcome!
>Meanwhile I have ordered a borescope to take a look inside the
>cylinders but it will take a week to arrive.
>Thanks in advance,
>This message was sent by the VirtualVairs mailing list, all copyrights
>are the property of the writer, please attribute properly. For help,
>mailto:vv-help at corvair.org This list sponsored by the Corvair Society
>of America, http://www.corvair.org/ Post messages to:
>VirtualVairs at corvair.org Change your options:
More information about the VirtualVairs