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03 STI crunch into 5th under hard acceleration

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Old 10 April 2018, 08:21 AM
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Somnambulist
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Default 03 STI crunch into 5th under hard acceleration

I've read quite a few threads on here already but can't find one that's similar to mine. I only bought the car yesterday (private) and didn't drive the car hard on the test drive, but coming home I noticed under hard acceleration from 4th to 5th there's a small notch/crunch. It's fine under normal acceleration, but pretty much every time under hard throttle it'll crunch.

Any ideas what this might be please? From what I can see it might be the syncros; if this is the case any rough costs? I'm based in Kent if that helps, but willing to travel to the right place to get the work done if needed!
Old 10 April 2018, 09:29 AM
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ossett2k2
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Check oil level,you could even try an oil change with decent stuff before you go down the gearbox out route.
At a guess,with new clutch and referb gearbox you won't get much change from £800

Last edited by ossett2k2; 10 April 2018 at 09:30 AM.
Old 10 April 2018, 10:36 AM
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1509joe
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5 speeds sometimes need nut tightened on the end of the input shaft in the transfer casing.
Old 10 April 2018, 12:17 PM
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Have a read of this thread, it may give you a few pointers on cost.

https://www.scoobynet.com/scoobynet-...x-rebuild.html

I paid about 500 + vat for removal and refitting.

I agree with the above though, try an oil change first

Siv
Old 10 April 2018, 01:13 PM
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Somnambulist
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Thanks all! It’s a 6 Speed so won’t be the nut issue related to the 5 Speed box.

It had the 3-year fluid change done last year but perhaps it wasn’t topped up properly, sounds like a sensible starting point.

Thanks for the link to your thread too Sivo, hoping it doesn’t cost me that much though!

It’s not a bad crunch, quite a small notch almost, but clearly something isn’t right. Will report back.
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