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Mustang Forums
2011-2014 Mustangs
Driveline/Suspension
Very loud gear whine after UCA install, is there any cure?
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<blockquote data-quote="BMR Tech" data-source="post: 14362738" data-attributes="member: 124691"><p>Loud? I don't think so.</p><p></p><p>Pinion angle has a little to do with the noise (harmonics) being transferred into the cabin....but not as much as people seem to believe. Heck, I wish it was - I'd sell more adjustable UCA.</p><p></p><p>I mean, it does help for sure. I've dealt with very picky customers who I eventually got "fixed up" by making them content, with correcting pinion angle....but a slightly off PA will not cause "loud" noises. Something else is contributing.</p><p></p><p>Keep in mind, the joints on these (all) driveshafts have operating range limits that far exceed what most see, typically. You can (should be able to, by design) operate these joints at significant working angles, without excessive noises.</p><p></p><p>NOW - I will say, having a excessive amount of angle difference between the trans and the pinion.....AND having an aftermarket UCA, can definitely cause some louder than usual "whirring" as I see people call it. You can lessen the harmonics/whirring by running a smaller angle difference, with an adjustable UCA.</p></blockquote><p></p>
[QUOTE="BMR Tech, post: 14362738, member: 124691"] Loud? I don't think so. Pinion angle has a little to do with the noise (harmonics) being transferred into the cabin....but not as much as people seem to believe. Heck, I wish it was - I'd sell more adjustable UCA. I mean, it does help for sure. I've dealt with very picky customers who I eventually got "fixed up" by making them content, with correcting pinion angle....but a slightly off PA will not cause "loud" noises. Something else is contributing. Keep in mind, the joints on these (all) driveshafts have operating range limits that far exceed what most see, typically. You can (should be able to, by design) operate these joints at significant working angles, without excessive noises. NOW - I will say, having a excessive amount of angle difference between the trans and the pinion.....AND having an aftermarket UCA, can definitely cause some louder than usual "whirring" as I see people call it. You can lessen the harmonics/whirring by running a smaller angle difference, with an adjustable UCA. [/QUOTE]
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2011-2014 Mustangs
Driveline/Suspension
Very loud gear whine after UCA install, is there any cure?
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