living with the 5th gear higher ratio

This site contains affiliate links for which LandyZone may be compensated if you make a purchase.
marksman

marksman

Well-Known Member
Full Member
Posts
1,302
Location
Co Durham
Looking back through the forums there's a higher ratio 5th gear available when getting a refub box, is anyone running this and how do you find it in real life ? as I'm in the process of specifying my refurbished box I may incorporate this if its worth while (I will also be running a 1.2 ratio Xfer box) Any assistance welcomed
 
Ive a 200tdi with a disco transfer box I seriously doubt you'd need a raised 5th gear as well. With 235/85 R16 and the disco box you don't normally get into 5th until 40mph anyway..
 
marksman said:
Looking back through the forums there's a higher ratio 5th gear available when getting a refub box, is anyone running this and how do you find it in real life ? as I'm in the process of specifying my refurbished box I may incorporate this if its worth while (I will also be running a 1.2 ratio Xfer box) Any assistance welcomed
Click to expand...
how fast do you want to go? with with a higher 5th I doubt you would be able to use it much on UK roads.
 
TheQ said:
Ive a 200tdi with a disco transfer box I seriously doubt you'd need a raised 5th gear as well. With 235/85 R16 and the disco box you don't normally get into 5th until 40mph anyway..
Click to expand...

Do you do much towing with the disco transfer box? I've got 235/85 on my td5 defender and was looking a putting a disco transfer box in for lower revs on motorway, (if that's how it works) I tow a 1.5ton caravan regularly
 
I use motorway 30% of the time, minimal towing launching & retrieving small boat etc, looking to be at 1700-2000 rpm at 70 on motorway
 
You say you have asked Ashcroft, why not use their ratio calculator to see what it looks like with the gearing you think might be in the rev range.
Not sure how your engine is on low revs.

J
 
Motorway? This is Norfolk,
Its 90miles to the nearest motorway from where I live. And 20 to the nearest dual carriageway .
I do tow 1.5 tons occasionally of boat and not had a problem, however I rarely get to 60mph before the next turning. . Oh and of course steep hills are somewhat rare.. .
I have driven on motorways and up proper steep minor roads without trailer up in Yorkshire again without problem.
 
I run a 300tdi 110 on 750x16 tyres, with a military LT77 gear-box and 1.2-1 Discovery transfer box.
Unless you have some sort of monster engine, I would suggest that the standard 5th gear ratio is about as tall as you would want to go with a Discovery transfer box, assuming you are using similar tyre sizes.
 
I've decided to go with std 5the gear ratio gerabox and 1.2 xfer box (As I have currently) for my refurbishment
Thanks for the inputs
 
1988smithy said:
Do you do much towing with the disco transfer box? I've got 235/85 on my td5 defender and was looking a putting a disco transfer box in for lower revs on motorway, (if that's how it works) I tow a 1.5ton caravan regularly
Click to expand...
I have 1.2 transfer box, lt77 gearbox, 200tdi, and 265/75 tyres, I can happily tow around a loaded twin axle car trailer. On occasion you may need to start in low box and change up on the move, but this is only for proper hill starts, normal driving it is not a problem and does not feel over-geared.
 
You must log in or register to reply here.

Similar threads

dag019
LT77 clicking loudly in 5th gear
Replies
7
Views
891
Skolmate
Skolmate
dag019
A question of gearboxes
Replies
16
Views
973
Skolmate
Skolmate
Military Mobility
Help identifying high pitched whine
Replies
12
Views
2K
lynall
L
tony109
Jumping out of 3rd gear on over-run
Replies
10
Views
2K
Gun7354
Gun7354
Military Mobility
Help needed identifying high pitched whine
Replies
2
Views
1K
Military Mobility
Military Mobility
Back
Top