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Old 07-13-2009, 09:13 AM   #1
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Default Gearbox noise

Hi guys well after selling my last 5, ive missed the fun of owning a 5, so after a good scour of the internet i found a little gem.
Its a 1990 Eunos in mariner blue, 65k.
Ive just been away for the weekend in it and discovered it has a horrible noise.

It seems to be coming from the gearbox in low revs when pulling off and letting off the throttle. when im in 4th or 5th its fine i drove all the way back and couldnt hear it.

You can notice it around town starting and stopping, its like a grinding/rattling noise, and again it comes in about 2000 revs to 3500 and then goes and it comes back again if you let off the throttle around that rev range.

Any ideas

thanks
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Old 07-13-2009, 10:08 AM   #2
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Mine makes all kinds of rattling noises, no grinding though. That's how I would describe it at least.
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Old 07-13-2009, 11:15 AM   #3
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i guess it is more of a rattle than grinding.
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Old 07-13-2009, 03:03 PM   #4
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Probably just worn out like mine. Mine used to be a whine, until after the rebuild I messed up and ran it dry for over a mile. I topped it off, but now I have a whine in every gear on top of a rattle at idle with clutch engaged. I'm assuming its the bearings or lots of excess play. I wouldn't worry about it.
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Old 07-13-2009, 03:06 PM   #5
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In low gears it sounds like I'm driving a car with a dog-box, just quieter. Nothing really wrong with it, it's just noisy. My dad's car does the same thing.
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Old 07-13-2009, 03:14 PM   #6
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^ Thats a good way to explain it for me as well. Of course the light weight flywheel didn't help make it any quieter, nor the running it dry of fluid. So mine sounds almost like a rally car, minus being fast or handling like one.
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Old 07-13-2009, 08:05 PM   #7
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I'm on this noise boat as well I haven't checked my fluid in a while maybe I should.....
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Old 07-13-2009, 09:05 PM   #8
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That sound is a good sound it means your transmission is about to make happy on the pavement.
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Old 07-13-2009, 09:41 PM   #9
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do you wear caps sideways?
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Old 07-13-2009, 10:43 PM   #10
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No.
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Old 07-14-2009, 08:13 AM   #11
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it seems alot of people are saying its " gearbox lash " and theres not alot you can do about it. :
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Old 07-14-2009, 08:20 AM   #12
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Who is saying gearbox lash? Sounds like a bunch of people talking about a bunch of **** they know nothing about.
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Old 07-14-2009, 08:28 AM   #13
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on mx5 nutz forum, i was hoping it was something like spigot bearing or clutch release bearing.
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Old 07-14-2009, 08:30 AM   #14
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Mine has been doing it for the last 3-4 yrs since I bought it. Its still in one piece. I wouldn't worry about it.
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Old 07-14-2009, 08:31 AM   #15
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thats what i thought, it runs great but can be embarrassing through town
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Old 07-14-2009, 04:25 PM   #16
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Transmissions cost less then $300 at most junk yards, and can often be found in the classifieds here +- $150. Make sure it is full of oil, and drive it till it breaks.
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Old 07-15-2009, 04:01 AM   #17
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Change the gear oil, make sure the turret oil is topped off, then report back. May even want to change the differential fluid while you are at it, Redline makes a great upgraded oil, or Mobil 1 if more easily sourced as it sounds like you may be in the UK? Fill out your profile info so we can more easily help you.
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