Gear Whine
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TECH Regular
Joined: Feb 2005
Posts: 481
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From: Arlington TX
Gear Whine I always heard that this was bad, but it seems to be accepted in the world of 12 bolts. My friends does it at certain RPM's. What causes this? How do you stop it? And is it bad or the gears?
Straight from Moser.................
The two primary differences between OEM gears and aftermarket gears are as follows:
OEM gears are not made with as much nickel as aftermarket gears, which in turn does not make them as strong. Conversely, OEM may not be as strong due to the material make-up, but because of the lack of nickel in the product, the gears may be quieter.
The impact value is substantially lower for OEM gears, meaning they WILL NOT be able to handle the demands of excessive horsepower as seen in more advanced drag racing.
There is a trade off. If you do race and have excessive horsepower, you will need an aftermarket gear. But keep in mind, the gears are made for strength and the ability to withstand the demands of racing. If you are using your automobile as both your daily drive AND your race car, can you live with more noise on a day to day basis? You need to decide this prior to purchasing aftermarket gears.
Moser also sets them up very tight supposedly for strength which might result in more noise. I've seen, used etc many 8.8's, 9"s D44 etc with aftermarket gears that were quiet as a stock D35 or 10 bolt so sometimes I dunno.
The two primary differences between OEM gears and aftermarket gears are as follows:
OEM gears are not made with as much nickel as aftermarket gears, which in turn does not make them as strong. Conversely, OEM may not be as strong due to the material make-up, but because of the lack of nickel in the product, the gears may be quieter.
The impact value is substantially lower for OEM gears, meaning they WILL NOT be able to handle the demands of excessive horsepower as seen in more advanced drag racing.
There is a trade off. If you do race and have excessive horsepower, you will need an aftermarket gear. But keep in mind, the gears are made for strength and the ability to withstand the demands of racing. If you are using your automobile as both your daily drive AND your race car, can you live with more noise on a day to day basis? You need to decide this prior to purchasing aftermarket gears.
Moser also sets them up very tight supposedly for strength which might result in more noise. I've seen, used etc many 8.8's, 9"s D44 etc with aftermarket gears that were quiet as a stock D35 or 10 bolt so sometimes I dunno.
