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4wd gearbox problem??

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Old Apr 11, 2007 | 01:22 AM
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Default 4wd gearbox problem??

Hi got a saph 4x4. When i initially bought it, it was only running about 310bhp max and still is.
The gear changes and selections were fine for the first few months. Now slowly over the months its come to a point where i could hardly select 2nd and third gear when am launching and giving it some. Driving normal theres no problem but when you give it some it jst won't want to select gears very easily. You have to wait til the revs come down and bit then it'll engage into gear.

Could it be a box problem or some setting/adjustment on the clutch cable/rachet etc?

Ive got a spare box which i can replace it with but want to make sure if this one is knackerd 1st...

so any help/suggestion welcome

(oh running an alcon 6 paddle clutch btw)
thanks
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Old Apr 11, 2007 | 01:29 AM
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Old Apr 11, 2007 | 04:13 AM
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Sounds like your synco's are shot! Does it crunch into gears at high revs when giving it some bananas?

Mine did this year ago before it departed....
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Old Apr 11, 2007 | 05:49 AM
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yup, second/thrid gear syncros gone mate

if you are lucky it will only be the syncro rings, but from the soudn of it the teeth on the cogs may be gone too

the syncro ring slows down the gears so that it will match the rotation speeds of both, but these are made of brass and wear away easier
what you may find is that, after a while you may not even be able to stay in second and thrid as there will be nothing stopping them from popping out, then it's rebuild time, but the better option would be to rebild the box you've got spare and then get that fitted, at leat you know you'll be putting a good box back in again
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Old Apr 11, 2007 | 10:31 AM
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Originally Posted by Smit
Sounds like your synco's are shot! Does it crunch into gears at high revs when giving it some bananas?

Mine did this year ago before it departed....
Yeh it does crunch when in high revs and trying to put it into 2nd gear and sometimes 3rd. You have to wait till the revs drop down a bit before it decideds to select the gears....

So i take it then the box is defo knackerd then???
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Old Apr 11, 2007 | 10:34 AM
  #6  
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dojj: what would a basic rebuild cost mate?
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Old Apr 12, 2007 | 04:18 AM
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Drop Bernie a email

www.gearboxman.co.uk
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Old Apr 12, 2007 | 08:36 PM
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Or PM Marco Polo - he's a man in the know when it comes to standard boxes or the Mullit boxes like I use.

Si
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