There is a roulette wheel in my engine bay.

[highly responsive]

My motor sounds like someone is spinning a roulette wheel.

Speeds up when I rev, slows down when I let off the pedal, still audible when idling.

I have a KA24E.

Is that the "timing chain rattle" or is there something more serious going on here.
The car otherwise feels the same.

[southerncross]

if its the timing chain rattle it will sound like you've got a pile of gravel running through your engine. its most likely going to be your water pump about to take a dump. its pretty common, ive replaced 6 of them on the 8 s13s ive owned. really easy, really cheap.

[highly responsive]

i know where the water pump is, but i have no idea how to take it out. please dont tell me i have to remove the head to get at it.

i guess the best way to see if its the water pump would be to run the car without the belt for a couple seconds, right?

[240=180]

either timing chain rattle or rod knock

[highly responsive]

funny, today when i went to work, it was making that noise.

i get off work, and its no longer doing it.

wtf?

[DataXUnknown]

Maybe your radiator shroud is hitting your fan or something...check out the simple shit of things touching the fan and such.

[undesiredshoe]

hydraulic lifters....

[highly responsive]

Maybe your radiator shroud is hitting your fan or something...check out the simple shit of things touching the fan and such.

well, ive got e-fans, so yeah.

it definitely sounds like its coming from inside the motor. but the sound disappeared and it hasnt come back. so i dunno wtf. shit was pretty damn loud though. louder than some youtube videos ive seen. loud enough to be embarassed about driving around with the shit, thats for damn sure.