"Crunch" on change-up
Discussion
Hi, I have a GTO3 with the five speed box and have started to notice that if I am accelerating hard when I change from second to third there is a distinct "crunch". Under normal driving it's fine and if, when accelerating hard, the revs are below still 4500 when I change up it's also fine.
It's a failry low mileage vehicle and is driven carefully.
Is this likely to be a synchro issue? Anyone know if it's fixable? Thanks for any advice.
It's a failry low mileage vehicle and is driven carefully.
Is this likely to be a synchro issue? Anyone know if it's fixable? Thanks for any advice.
It can to the linkage that just needs tinkering with. I have noticed my gearchange getting a little less slotty (6 speed) since I have had it, and mine is actually at the factory today having the linkage tinkered with ready for me to collect tomorrow!
Yes, I am collecting her tomorrow
Greg
Yes, I am collecting her tomorrow
Greg
It will either be an incorrectly adjusted linkage or third gear synchro is beginning to fail - this isn't unusual on the 5SP box if used in anger. A drain of gearbox oil and examination for synchro shrapnel will confirm/rule out this.
Best Regards
Matt
If required we have a couple of brand new 5SP boxes in stock.
Best Regards
Matt
If required we have a couple of brand new 5SP boxes in stock.
sidney said:
Is a synchro failure something that can be repaired or is it a new gearbox? How much would a 5sp box with fitting be? Thanks.
A synchro failiure can be repaired without problem, however the labour involved in a gearbox rebuild means it would be cheaper to simply replace the gearbox with a new one.
Also synchro failiure can lead to debris in the gearbox oil which can cause rapid wear on other components within the box - is your diff whining?
I have sent you an e-mail with some details but we would re-set the gearchange cables, check the linkage condition and change the gearbox oil first before recomending a box replacement.
Best Regards
Matt
m12_nathan said:
And if you repair it or replace it with another 5 speed box it'll happen again. 7.2k for a 6 speed box upgrade and linkage.
A box rated at 350lbft max sold in a car with 350lbft, clever....
Did I read that right? £7200 for a 6 speed box
- I could just replace my 5 speed box 5 times for that!£7.2k for a six-speed 'box conversion? Rubbish!
To upgrade a five-speed equipped car with a six-speed 'box and ATB diff is £4565 + VAT. To install a new five-speed box (but with the addition of an ATB diff) is £2250 + VAT.
Bear in mind that both the above prices include the 22 hours labour involved in removing and re-installing the engine/gearbox.
As I've already mentioned to Sidney in an e-mail, we would be happy to check his car first to see whether the fault can be rectified without going to this extreme.
Simon Hucknall
Press Officer
Noble Automotive Ltd.
To upgrade a five-speed equipped car with a six-speed 'box and ATB diff is £4565 + VAT. To install a new five-speed box (but with the addition of an ATB diff) is £2250 + VAT.
Bear in mind that both the above prices include the 22 hours labour involved in removing and re-installing the engine/gearbox.
As I've already mentioned to Sidney in an e-mail, we would be happy to check his car first to see whether the fault can be rectified without going to this extreme.
Simon Hucknall
Press Officer
Noble Automotive Ltd.
micknall said:
£7.2k for a six-speed 'box conversion? Rubbish!
If it is rubbish then it is your rubbish
Read my post again - "6 speed box and <b>linkage</b>", then refer to your own post here: www.pistonheads.co.uk/gassing/topic.asp?t=189516&f=26&h=0&hw=linkage
Where you say it'll be £7.2k for the 6 speed box and new linkage.
if you go on ebay search for noble there are 5 speed gearboxes for the buy it now price of £199 says rrp is £828 + £200 surcharge....think you could get it fitted for under a grand not as nice a job as the £7200 but can think of better things to spend 6 grand on and your car wont be worth any more! just a sugestion
opolock said:
if you go on ebay search for noble there are 5 speed gearboxes for the buy it now price of £199 says rrp is £828 + £200 surcharge....think you could get it fitted for under a grand not as nice a job as the £7200 but can think of better things to spend 6 grand on and your car wont be worth any more! just a sugestion
Just had a search for these and they are Mondeo spec - they require various modifications to make them suitable for the Noble.
Regs
Matt
m12_nathan said:
A box rated at 350lbft max sold in a car with 350lbft, clever....
Nathan old chap, since you sold your M12 and left the Nobility there's been a distinct sourness to your postings, almost as if you're listening in just to give a dig when you can.
You can't wallow in the past forever. There come's a time to move on old boy.
Regards
PauL C
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