250 Gearbox sound around 50mph

I'm getting an odd noise around 50-80mph in my car, it almost sounds like a plane taking off. Like the video below but no way near as loud. I've something about gearbox bearings with this car, definitely can't afford a new box at the moment so is there any harm in leaving it? Or would a gearbox oil change do the trick?

 

It's barley noticeable compared to that video. I refuse to put a new gearbox on a car that's done 38k that's ridiculous.

I know I'm getting fucking bored of it if I'm honest. I had nothing but issues after owning my 225 for 9 months and then it blew up. I've not actually had any major issues with this one but everytime I start it I feel like it could be the last time.

 

If its a bearing I don't see why it can't be refurbished.

 

A lot of money to pay if its all in my head though. Just went for a drive with my girlfriend and she could barley hear it. Said it was just wind. I can barley hear it to be honest.

 

That's not my video, I've recorded mine below and you can't hear it. All you can hear is the exhaust. Like I've said mine is extremely quiet, I just chose that video because it's a similar sound, albeit not the same, and I don't know how to explain it.

 

Yeah, I think I'll do that, I may be changing the cat which means I'll have to change the gearbox oil anyway.

 

Drive shaft has to come out to change it which means no more oil!

 

So basically it's replace now or later?

 

The box

 

Well that's what I mean, is it just a car of replace now or later because why not get some more life out of this one.

 

Well, I'll see how loud mine gets and then possibly refurb it. Anyone in the south you suggest I take it to when I need to?

Why is the gearbox so bad? You think when implementing an LSD they could have just made a decent gearbox. Does the R26 gearbox not fit it?

 

Yeah I get your point but didn't they design a gearbox specifically for the R26?

 

People that had this. Does the sound stop if put the clutch in? I put the clutch in while coasting at 50 and the sound stayed the same.

 

Was yours the LSD version though? £300 including fitting?

 

Right okay, and that's fitted to the car? Got a link to all the bearings?

 

Well, I ask because I'm pretty sure it's the diff making the noise and not the actual gearbox.

 

The more I listen the more I think it's a wheel bearing. Problem is my girlfriend says she can't hear it, typical, and it's too dangerous for me to lean over and listen so gonna have a mate come for a drive tomorrow and see. But I'm now pretty sure it's coming from the front left wheel.

 

Well I'll get my friend to listen and try and pinpoint where it's coming from first, but at £70 for the bearing it's not a massive deal. I really hope it is that.

 

I left it and the sound has gone away lol so no idea