What can i expect mpg wise - 200tdi

[stuntman]

Hello everyone, I'm just drawing my project to a close.

Can someone give me an idea of what I can expect mpg wise with the following:

Series 3 gearbox
Rebuilt 200tdi
Disco diffs
750/16's
Truck cab body SWB,

Used on the motor way and around town, will be driven sensibly, not over 2.5K revs.

Just an estimate would be great, thanks in advance

Andi

[propes]

200 tdi rrc with K&N filter + tons of steel bolted to it, i can manage 25-30 average but i do drive very steady and keep to 60mph. Keep the windows shut roofrack off when not needed and get a tonneau cover for the back and i reckon you'll do it no probs. good luck!

[stuntman]

I'm expecting 35-40 due to rwd, less weight and not alot of drag.

[Les Henson]

SWB is lighter than a Disco, so I would expect fuel consumption to be as good or perhaps better. The series gearbox is the weak link in what you've done - you'll still have to 'over rev' between gears. If you had fitted a Disco gear/trans box, then you could expect better MPH than a disco - due to less weight. Road speed would be similar to a Disco as well, which would be quite scary in a series :)


Les.

[propes]

Bit optimistic i think, remember its got the aerodynamics of a house brick and still weigh the best part of 1 3/4 ton and theres still a hell of a lot of metal to turn in the drivetrain,maybe freewheeling hubs would help a bit more. In the real world terms the wifes 1ltr yaris averages about 48 mpg which when im doing a longish motorway run can raise to 58mpg and that weighs about the same as my wallet(not much). The prima diesel canversion seems about the most frugal conversion ive seen.

[bogie]

series 3 box with an overdrive im getting 45mpg around the 60 mark.top end  of mine at mo is 115mph,but im on my 6th box and looking 4 a new overdrive!!!!!!!!!!!!!!!!!!   rangy axles also help!

[ian_s]

last time i did long run in mine (slightly knackered 200tdi, rangey diffs, 235*85 tyres) i got about 32mpg, and that was keeping up with motorway traffic on the M1/m25. i was also quite heavily laden down with tools. i'm guessing with a truck cab you wont be carrying a lot in the back all the time, so you could possibly get 35 mpg crusing at more sensible speeds

the best i ever got was well over 35, but that was when my engine was running well and i was cruising in convey with another car towing a trailer so we only did 50mph

an overdrive would help a lot more, and its on my list of things to get :)

[bigant]

transit engine in mine does an easy 44 mpg :)

[Bob_2a]

series 3 box with an overdrive im getting 45mpg around the 60 mark.top end  of mine at mo is 115mph,but im on my 6th box and looking 4 a new overdrive!!!!!!!!!!!!!!!!!!   rangy axles also help!

HAHA! This is the 2nd time I've plugged this!  I've got my fairy on ebay atm.  either bid or buy it now:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&Item=120386077416&Category=31348

[discowoman]

a truck cab wont be the most fuel efficient - due to the vortex created in the load bed - fit a hardtop this will 'improve' the aerodynamics slightly (yes I know its a series but every little bit helps)

[lightweight-love]

My 200tdi thru series drivetrain with overdrive n freewheels 235/85/R16s does 35+mpg cruising at about 65mph
What ratio the disco axles at then?

[tuko]

What ratio the disco axles at then?

3.54's.  ;)