S500BE

hi guys got the strange crunchy rattle noise when i put the car in 5th gear its an 03 new age sti i see other people have talked about this and was just hoping for some guidance on how to check this 5th gear nut they talk about or how to tell if its synchro-mesh damage many many thanks

Mus

iTrader: (2)

i thought these boxes were bomb proof?

S500BE

yeah me too only running 400/400 with no launching etc

ScoobyDoo69

iTrader: (17)

They are bomb proof, the synchros in the pre 05 (I think) boxes in 4th 5th and 6th are pants though, which was soon resolved by carbon plated ones or something like that.

Sounds like you need the synchro doing...

beenyman

iTrader: (1)

use redline gear oil theres 3types super lighyweight light weight and heavyweight for your type of gear changes depending on how bad the cruching is it will go away worked on mine like a gem i used heavyweight evan if it dos'nt go away yout cruching will not go worse

Mus

iTrader: (2)

if its just synchros just get it repaired get peace of mind

PeeVee

iTrader: (1)

It won't be the stake nut on 5th as this was a problem that happened on late classic 5spd boxes.

Idealy you need to get the latest "carbon coated" baulk rings fitted to cure your problem, but you could always try the oil change route first if you like.

The one thing you need to be consious of, is that every time you change gear with a crunch, you are not only causing wear/damage to the baulk ring you are also damaging both 5th gear and the 5th/6th hub assay. If you catch the problem early on then it is a case of replacing just the £20 baulk ring, but leave it for too long and you will find that you then need both a new 5th gear @ £120.00 and a new hub assay which will set you back another £170.00!!

S500BE

thanks guys any suggestions on who can do the work for me im in the lincs area cheers

dunks518

hi mate just had mine repaired in essex by a.m gearboxs 5th gear sychromesh had gone cost me £250 not bad as been quoted 450 plus by scooby specialist in essex

APIDavid

iTrader: (4)

Exactly as PeeVee says,couldn't have put it better myself, except that the carbon coated cones are just about 30 quid each.

Do it sooner rather than later. NO oil in the world will fix crunchy synchro. Good oil will delay it happening for some few thousand miles if fitted when new but after the problem starts it won't make the slightest difference.

We can fix it if you wish - but we aren't in Lincs.

David APi

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bonesetter

iTrader: (9)

I put new oil in my crunchy box and it got worse Waste of £50

Had API fix it (recon box & clutch). More tears when I had the bill, but it's as sweat as a nut now.

(Joking aside David stuck to his quote)