Engine Rattle - Normal?

Old 04-04-2011, 05:04 PM
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Engine Rattle - Normal?

Hi,

New guy. Have had the S for almost 3 weeks now. Changed the engine, tranny, diff fluid last week before my first autoX event.

It is a MY00 with 42K miles on it.

I noticed while I was testing out the airbox removal mod that the engine especially after a cold start in the garage, with 40 degree temps outside was a bit loud. It got quieter after it warmed it in a minute or so.

The oil I just put in is Amsoil SS 0-30W. the old oil was pretty dark

Here are some vids after it was warmed up. I used my Iphone 4 for recording.


with the phone near horizontally along the engine valve cover


this is with the mic of the phone facing the engine


you can hear it after it came back down from revving

Is this normal?

thanks,
Frank

Last edited by usafstud; 04-04-2011 at 05:19 PM.
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Old 04-04-2011, 05:47 PM
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stop doing that!!


I don't hear anything odd...but, it's cellphone vid/sound.
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Old 04-04-2011, 06:31 PM
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It's going to sound a lot different after removing/modifying the air box.

You may hear valve noise too, depending on your mod.

Last edited by griffon; 04-04-2011 at 06:43 PM.
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Old 04-04-2011, 06:52 PM
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Sorry, the box was back on for the vids

The car is stock
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Old 04-04-2011, 09:10 PM
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I hear good ol' fashioned clutch buzz.....other than that it sounds pretty normal, I also am having a little difficulty desiphering the noises on the phone and the comp speakers...Probably is easier to hear irregularities in person.
EDIT: In your second video there is a pretty distinct "rattle" noise.....don't know what to think of it though...it is not the TCT (by the sound I am hearing)

Last edited by whitebrad25; 04-04-2011 at 09:12 PM.
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Old 04-04-2011, 11:14 PM
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Sounds normal to me...
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Old 04-04-2011, 11:48 PM
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even though i live on the coast in CA, the temps do fluctuate (somewhat). definitely anything under 50 mine runs a little rougher and louder. but when it warms up to anything over 65, it feels like a completely different car to me. everything is so much smoother, quieter, all the rattles and what not go away.
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