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Is This Noise Normal?

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Old Apr 19, 2018, 01:35 PM
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Is This Noise Normal?

Okay so I know evos have loud valvetrain but I’m more concerned with this rattling that I hear when revving the engine... It seems too loud and “clanky” to be lifter tick... It’s always done this to some degree but lately I feel like it has gotten louder.
Car has Greddy 264 cams. Idle at 1000. Oil level is perfect, running Amsoil Full Synth. 10W-30. This is on a hot motor.
Car performance is unaffected but I’m just worried this is a warning sign that something is up?
Also, today is pretty hot (first really hot weather the car has seen in awhile) and the car is popping/burbling on decel after downshifts. It never usually pops??
anyways, any advice or help would be much appreciated. Thank you
Old Apr 19, 2018, 01:54 PM
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sounds normal to my ears.
Old Apr 20, 2018, 01:45 AM
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The 10w30 is too thin.
Try thicker oil
Old Apr 20, 2018, 01:56 AM
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yea sounds normal.
Old Apr 20, 2018, 08:55 PM
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Thanks a lot fellas
Old Apr 21, 2018, 10:32 AM
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Sounds better than my engine and I consider my engine quiet.
Old Apr 21, 2018, 11:35 AM
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Originally Posted by Evo VI.
The 10w30 is too thin.
Try thicker oil
Wrong. Nothing wrong with 10w30. It's what he engine built for in regards to factory bearing clearances.
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