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s14unimog · 03-20-2008, 02:31 PM

I don't know why yours is doing that but my SR has a horribly loud rattle in the exhaust at 4k RPM. I don't think its a performance related issue but more so that something is loose or broken and the SR makes it apparent at 4k because that must be a resonant frequency of the motors sound.... Kinda like when everything in your interior vibrates a bunch at a certain RPM.

This may be totally wrong but it sounds good. Now if I can only figure out what the fu*k that noise is!

03-20-2008, 02:31 PM	#2
s14unimog Nissanaholic! Join Date: Dec 2003 Location: In a place, near a river, over a lake Age: 34 Posts: 2,415 Trader Rating: (22)	I don't know why yours is doing that but my SR has a horribly loud rattle in the exhaust at 4k RPM. I don't think its a performance related issue but more so that something is loose or broken and the SR makes it apparent at 4k because that must be a resonant frequency of the motors sound.... Kinda like when everything in your interior vibrates a bunch at a certain RPM. This may be totally wrong but it sounds good. Now if I can only figure out what the fuk that noise is! __________________ Fuking ginger bread man stole my wallet... SHIFTlock_slide to side d3m3rs0n: if i have a baby im naming it Brandons Fault Emerson