Subject	Odd Rasp / Rattle @ 2.5-3k RPM, Half Throttle
Posted by	Onyx Z32 on March 27, 2011 at 7:28 PM
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Message	I've had a rattle noise coming from my motor for years and I've never tried to search it out because it never seemed to be a problem. It only happens at about 2,500 - 3,000 RPM and only under half / part throttle. Never under deceleration or acceleration, only when sustaining speed in any gear around that RPM range. Any ideas guys? I tried to search but it's kinda hard to search for. I do remember reading here once that it was a loose "something" and that it wasn't a major problem, just more of an annoyance... but that was a few years ago. I'm asking now because I'm in the middle of a 120k job and would like pointers as to what to look for. Thanks in advance!
Follow Ups	Odd Rasp / Rattle @ 2.5-3k RPM, Half Throttle - Onyx Z32 19:28:03 03/27/11 There are several sheet metal heat shields on the car - zellamay 21:25:36 03/27/11 I have no heat sheilds left :) Sounds almost like - Onyx Z32 22:18:13 03/27/11 You could use a rubber hose as a stethascope and maybe - zellamay 01:27:07 03/28/11 Yep, been using the ear-to-breakerbar method but can't - Onyx Z32 08:12:24 03/28/11 Exhaust leak at downpipe--> turbo gasket - KongZTT GT28RS MD 22:31:04 03/27/11 I'd say that's a good guess, but - Onyx Z32 00:03:10 03/28/11 Very well could be! - KongZTT GT28RS MD 00:49:49 03/28/11 Possibly a crack in exhaust manifolds? - ChrisMedaris 11:05:45 03/30/11
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