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Weird Exhaust


chadz34

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My Lumina is at my house now, I haven't taken it back to storage yet cause I wanna get some pics of it first for you guys. But anyways, I've noticed the rasp from my exhaust is only there until the engine warms up. Once the engine warms up the rasp is gone. I was wondering if it's always supposed to rasp or if it is supposed to go away. What causes the rasp anyways?

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the rasp from a dohc is nothing to worry about its just the valves warming up.

 

most dohc owners weill hear a rasp at 2300-2800 rpms that is normal

 

if you have a rasp at wot then you have an obstruction possibility

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Yeah ok thanks. It only lasts for like 5 minutes before the rasp is gone. It sounds sweet especially if you hold it at 2300rpm going up the street and you get everyone looking at you. :lol:

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