Need help with motor noise!
06-22-2018, 08:41 PM
#1
Need help with motor noise!
The truck just got heads and a cam, it is a RCSB 4.8 with a 5 speed. Still waiting to get it tuned and I am having a hard time pin pointing the noise it is making because it is open headers. Curious if anyone has some suggestions as to what the noise might be or if I’m just loosing my mind.
06-22-2018, 09:25 PM
#4
I am having a hard time trying to describe it, but if you separate the exhaust noise you can hear a hollow knock type noise. I hate to call it a knock because it does not sound all that serious but a I am still stumped. It’s a higher pitch then the low thump of the headers
Last edited by DrocheGMC; 06-22-2018 at 09:54 PM.
06-22-2018, 10:29 PM
#7
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that hollow sound comes from the open headers itself, if you want to try and make sure its not a knock, cut a piece of water hose about three feet. put one side to your ear and the other end just guide it around the bottom of the engine. it allows you to hear any abnormal sound more distinctly. kinda a old mexican way that ive done it lol. it helps locating the sound.
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06-25-2018, 11:26 AM
#10
TECH Regular
That hollow noise is due to the open headers bud.
I know what noise youre talking about because my buddy once had the same bright idea to run open headers, and it sounded terrible at idle.
I know what noise youre talking about because my buddy once had the same bright idea to run open headers, and it sounded terrible at idle.
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