just to update this...
gearbox is back on (not sure how I managed it)... I have a mild panic though.. I have reconnected the clutch slave, those bolts and nuts are such a ballache... but the clutch pedal is pretty soft... havent bled it yet due to the great british weather so hopefully thats the reason... fingers crossed... I think it would break my heart having to take it out again...
Problems… is it the gearbox or clutch?
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Re: Problems… is it the gearbox or clutch?
Bye bye unusual 4th gear ratio.
- Aidan
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Re: Problems… is it the gearbox or clutch?
it might be worth stripping it for the 4th gear set, but tbh the 0.78s are rarely in good condition because when in the TD bus it got lugged in 4th a lot so dog teeth tend to be worn to the point where gear retention becomes problematic
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Re: Problems… is it the gearbox or clutch?
Went for a test drive today...
We are mobile.. it works and happy.. now to try and sort all the other stuff with the van..
Cab sounds quieter.. strangely..
4th gear in the old box would do 55 at 3000 rpm, now its 50 at 3000 but all good..
Thanks to @stesaw for the box..
Footnote.. reverse lights dont work now. Have bridged contacts, lights come on. will buy a new switch to sort it..
Thanks for everyones help..
We are mobile.. it works and happy.. now to try and sort all the other stuff with the van..
Cab sounds quieter.. strangely..
4th gear in the old box would do 55 at 3000 rpm, now its 50 at 3000 but all good..
Thanks to @stesaw for the box..
Footnote.. reverse lights dont work now. Have bridged contacts, lights come on. will buy a new switch to sort it..
Thanks for everyones help..
- Aidan
- Trader
- Posts: 6837
- Joined: 11 Oct 2005, 19:21
- 80-90 Mem No: 742
- Location: Llanfyllin, mid Wales : )
- Contact:
Re: Problems… is it the gearbox or clutch?
so what code box have you fitted ? Sounds like maybe a naturally aspirated diesel box if it is slower than the old one
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Re: Problems… is it the gearbox or clutch?
ha, maybe should have confirmed this before i put it in... doh..
will check once it dries.. whenever that will be
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- Registered user
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- Joined: 21 Aug 2013, 15:01
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- Aidan
- Trader
- Posts: 6837
- Joined: 11 Oct 2005, 19:21
- 80-90 Mem No: 742
- Location: Llanfyllin, mid Wales : )
- Contact:
Re: Problems… is it the gearbox or clutch?
yep n/a diesel box, ABF = 5.83 final drive, 0.85 fourth gear, in top final gear is 4.9555
old box ABH = 5.43 final drive and 0.78 fourth gear, 4.2354 final gear
your new box is 17% slower or 17% more revs for same speed
ideally you want a petrol box ABD 4.86x0.85, 4.131 final gear, 2.5% quicker than the ABH, worth keeping an eye out for one, or a DU, or a DT or an ABB, last 2 are quicker by another 5% as they have 4.57 final drive
old box ABH = 5.43 final drive and 0.78 fourth gear, 4.2354 final gear
your new box is 17% slower or 17% more revs for same speed
ideally you want a petrol box ABD 4.86x0.85, 4.131 final gear, 2.5% quicker than the ABH, worth keeping an eye out for one, or a DU, or a DT or an ABB, last 2 are quicker by another 5% as they have 4.57 final drive
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Re: Problems… is it the gearbox or clutch?
Thanks Aidan,Aidan wrote: ↑21 Sep 2024, 16:39 yep n/a diesel box, ABF = 5.83 final drive, 0.85 fourth gear, in top final gear is 4.9555
old box ABH = 5.43 final drive and 0.78 fourth gear, 4.2354 final gear
your new box is 17% slower or 17% more revs for same speed
ideally you want a petrol box ABD 4.86x0.85, 4.131 final gear, 2.5% quicker than the ABH, worth keeping an eye out for one, or a DU, or a DT or an ABB, last 2 are quicker by another 5% as they have 4.57 final drive
thats really helpful.
Happy to be moving again to be honest and was a really good price so I cant complain at all..