My new Motive 3.73s whine

[mach1]

I just got them professionally done yesterday, car runs great, but they whine on light throttle. I'm reading up now that a lot of motive gears are noisy. Can I expect the whine to fade after riding on them a bit or should I just get used to the sound?

it's not the gears. it's your exhaust. you need a louder exhaust.

 

[rw0640]

it's not the gears. it's your exhaust. you need a louder exhaust.

This whole time I thought it was the gears...

 

[SSChris NY.]

Once you set-up a set of gears and they end up making noise, your wear a pattern into the gear set it self that no amount of re-adjusting will take away, your only fix is going to be a new set of gears and this is just my two cents of installing a few sets of gears myself, best of luck

 

[Ghostly Echo]

Once you set-up a set of gears and they end up making noise, your wear a pattern into the gear set it self that no amount of re-adjusting will take away, your only fix is going to be a new set of gears and this is just my two cents of installing a few sets of gears myself, best of luck

+1

 

[rw0640]

I took it in today, the vibration at 60 was my driveshaft, shop adjusted it to turn the other way, significantly reducing the buzz, so I'm happy with that.

Once you set-up a set of gears and they end up making noise, your wear a pattern into the gear set it self that no amount of re-adjusting will take away, your only fix is going to be a new set of gears and this is just my two cents of installing a few sets of gears myself, best of luck

Unfortunately I agree. Shop suggested complaining to motive and trying to get them to send a new a gear and cover labor. I don't think it'll happen. I don't know if it would even be worth the headache. the whine isn't that loud, I'm just not used to hearing it. I can just add it to the collection of creaks and groans my car makes.

 

[rw0640]

Had some fun with the gears!

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[03SONIC]

Motive are hit and miss. FR does not make a 3.90 so some run a 3.90 and use Motive. 3.73 and 4.10's FR makes, best gear pack out there. I do not run Motive gears at all, it has to come apart buy FR gears. Sorry

 

[Shaman]

My motive 3.90s whine, but they are a "performance cut" gearset. they also make this cut gear in a 3.73 ratio. It differs from the standard 3.73 they also make. If you happen to have this "performance cut" set, you may have an inherent whine, as opposed to standard 3.73 gears. check and see which gearset they installed. i believe there are four different cuts in that ratio- standard, performance, reverse cut and lightweight.

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[rw0640]

My motive 3.90s whine, but they are a "performance cut" gearset. they also make this cut gear in a 3.73 ratio. It differs from the standard 3.73 they also make. If you happen to have this "performance cut" set, you may have an inherent whine, as opposed to standard 3.73 gears. check and see which gearset they installed. i believe there are four different cuts in that ratio- standard, performance, reverse cut and lightweight.

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The box says "Stock Performance Ring & Pinion" and on the side it says "FRD 10BL 7.5 R/P 3.73. R/P" R/P.. Reverse? Performance?

 

[Shaman]

i think rp stands for ring and pinion...
but i do see the word performance in the description, so idk. a call to them may help.

 

[rw0640]

rp ring and pinion makes sense. I had called them before, not super helpful but had given me a number to their tech guy who never called me back. I think I'm just going to live with it. In the future I may upgrade to an 8.8 rear end but not until my warranty is up