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volta

R32 GTSt howling sound in reverse

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Hi guys/gals! I'm trying to figure out a strange sound coming from my Skyline. Every so often, say, once every 3 or 4 times I reverse out of my garage, I hear an awful sound coming from under the car. I equate it to a slipping belt, but a lower tone. It sticks around for maybe 10 seconds, and goes away. No issues driving as of yet, no clicking/grinding. It's just a loud howl and I want to address it before it gets worse. Has anyone had this issue by chance? I was asking some friends local to me and they figure throw out bearing is failing. Ideas?

Car is a '93 GTSt coupe with 165k K's on it.

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Its not just the noise the gearbox makes in reverse? Mine howls pretty loud if i go in reverse fast enough.

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2 hours ago, 89CAL said:

Its not just the noise the gearbox makes in reverse? Mine howls pretty loud if i go in reverse fast enough.

No, this isn't a normal sound, it's definitely something wrong. It's about as loud as a squealing belt too. Is there some sort of bearing related to the reverse gear that can fail? I've never torn a manual box apart before so I'm not entirely sure.

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There are several needle roller bearings in the gearbox. If its only reverse I would say it is to do with the idler gear

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