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SportTrac Discussion
Engine & Drivetrain
Whistle Caused By Rolled Exhaust Tip?
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<blockquote data-quote="swshawaii" data-source="post: 935997" data-attributes="member: 67547"><p>Replaced the "teapot" spout with a 2.50" pipe and 2.75" inside rolled tip, out the rear.</p><p></p><p>Inside of the tip is not completely rolled over and has a sharp edge.</p><p></p><p>Happens when accelerating under a load, never in neutral. </p><p></p><p>Only engine mods are a throttle body, drop in filter, and air silencer removed. </p><p></p><p>Belts, alternator, hoses, etc., all seem OK. Stock resonator is still installed. </p><p></p><p>Never heard this until I changed the exhaust pipe and tip, almost a "supercharged" sound. </p><p></p><p></p><p></p><p>Please no "whistling exhaust tip" or "happy whistle" jokes, heard one too many. Thanks. :banghead:</p><p></p><p></p><p></p><p></p><p></p><p><strong>EDIT- Almost a year later the culprit was caused by my OEM serpentine belt.</strong></p><p><strong></strong></p><p><strong>Replaced it with the half inch shorter Gates K060860 and the "whistle" is gone</strong>. :banana:</p></blockquote><p></p>
[QUOTE="swshawaii, post: 935997, member: 67547"] Replaced the "teapot" spout with a 2.50" pipe and 2.75" inside rolled tip, out the rear. Inside of the tip is not completely rolled over and has a sharp edge. Happens when accelerating under a load, never in neutral. Only engine mods are a throttle body, drop in filter, and air silencer removed. Belts, alternator, hoses, etc., all seem OK. Stock resonator is still installed. Never heard this until I changed the exhaust pipe and tip, almost a "supercharged" sound. Please no "whistling exhaust tip" or "happy whistle" jokes, heard one too many. Thanks. :banghead: [b]EDIT- Almost a year later the culprit was caused by my OEM serpentine belt. Replaced it with the half inch shorter Gates K060860 and the "whistle" is gone[/b]. :banana: [/QUOTE]
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SportTrac Discussion
Engine & Drivetrain
Whistle Caused By Rolled Exhaust Tip?
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