[Shotimes] Knock, knock .. who's there?

[Jason Hartberger]

I still swear you just got a woodpecker trapped down in there, an' it gets
pissed when you turn the engine on and it starts a'peckin' at it! I'm sure
of it! <G>

Jason


----- Original Message ----- 
From: "Kirk Doucette" <Kirk.doucette@verizon.net>
To: "Adam Parrott" <parrotta@usa.net>; <shotimes@autox.team.net>;
<TechSHO@topica.com>
Sent: Saturday, May 15, 2004 1:02 AM
Subject: RE: [Shotimes] Knock, knock .. who's there?


> Adam check the valve springs, you may have a weak one. Im not sure what
they
> are even supposed to be for a spring rate.
>
> It to me sounds like upped end for sure, if it was a V8 I would say the
cam
> sprocket is loose.. that is exactly what a loose sprocket sounds like, we
> know the V6 cams are solid and if your not showing worn out chains or a
> completely failed tentioner I would look at the valve train very
closely...
>
> Kirk J Doucette
> NESHOC President
> Stormtrooper-97 White
>
> -----Original Message-----
> From: shotimes-admin@autox.team.net
[mailto:shotimes-admin@autox.team.net]On
> Behalf Of Adam Parrott
> Sent: Saturday, May 15, 2004 12:17 AM
> To: shotimes@autox.team.net; TechSHO@topica.com
> Subject: [Shotimes] Knock, knock .. who's there?
>
> Just a wee update for everyone.
>
> The car is sitting in Tony's garage right now, near naked down to the
bone.
> Both the top and bottom-ends of the engine have been stripped down to the
> heads, but the cause of the sound has yet to be found.  According to Tony,
> there were no ejected shims (everything was intact and in spec), the
chains
> and tensioners look good, the cams are undamaged, there were no spun
> bearings (thank God) and everything *seems* to be kosher.  In Tony's
words,
> the engine looks perfect and the rod bearings were "beautiful".
>
> The new question is, WTF is going on here?  With nearly every aspect of
the
> rotating assembly in perfect or near-perfect health, what else could be
> suspect, keeping in mind the loudness and intonation of the sound that is
> being produced (see link in the message below for a copy of the clip that
I
> posted earlier)?  With shims, valves and rod bearings out of the equation
> now, does anyone else have some ideas of where we might look in locating
> this sound?  Tony and I both are really scratching our heads on this one.
>
> All ideas are welcome and appreciated.
>
> Adam
>
> ----- Original Message -----
> From: "Adam Parrott" <parrotta@usa.net>
> To: <shotimes@autox.team.net>; <TechSHO@topica.com>
> Sent: Saturday, May 08, 2004 4:01 AM
> Subject: Audio clip of knock (was: Knocking help needed)
>
>
> To further aid those who are helping to diagnosis my aforementioned
> knocking sound, I recorded a sample of it tonight and uploaded it to the
> link below.  The file is about 602kb and approximately 50 seconds long.
>
> http://hosting.superhighoutput.com/axianator/audio/sho_knock.mp3
>
> For the first 30 seconds, you'll hear the engine start and sit at idle
> while the microphone is held right above hood level and at just outside
the
> driver's window.  The 15 seconds after that hear the mic taken down to
near
> ground level while I give the engine two quick revs.  For the last 5
> seconds, the mic is taken back up to hood level and the engine is shut
off.
>
> All recording was done by me, sitting in the driver's seat and holding the
> mic just outside the drivers window.  The hood was also closed during this
> recording, if that's any indication as to the loudness of the noise.
>
> At some point this weekend, I hope to rule out the accessories as the
> source of the noise by briefly running the engine with no accessory belt.
> If the noise is still present after that test, then I'll try to get ahold
> of a stethoscope and check the engine over and see if I can't better
locate
> the source of the knock.  I just pray that it's not an internal problem,
> eg. rod bearings (only 9k old) or a thrown shim..
>
> As always, all ideas and thoughts are welcome.
>
> Adam
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