mpg

[Matt_H]

now I'm not nomally one to  ask about mpg figures as they are as always dirver and cehicle specific.... but today is an exception, after having one of those days where the neighbour tells you his v8 range rover gets 20mpg, and wondering why i bother with a slow 200 tdi 90 that gets about 23 mpg, i wonder what you people get

my truck is basically a defender 200tdi (earlier car later engine), 2" lift and is a pickup with roll cage, steering guard (no idea if that affects aero dynamics though!)  on 265/75/16 BFG MTs.  

So is 23 mpg pants?  (this is long distance constant 60mpg type speeds mixed with a bit of urban)

Matthew

[extreme90]

a defender.....aerodynamic :shock:  .....ya avin a laugh arntcha lol. y go n stick a v8 in wen u can play submarines with the 200 in ......stick a disco 200 in and get a little over 28mpg that is what im gettin out of mine but i didnt use a steve parker conversion .....i used my brain n a disco gearbox....alot more room then for the exhaust....so you have alot more free flow exhaust wich doesnt choke the engine 2 death and lack its power and decrease the mpg. that is what i wud do in your shoes......cuz i did it. u just need 2 b a gud fabricator.

[Jim-Willy]

I would say that is rubbish.  Mine is a 300tdi wi a auto box and standard Defender transfer box and i get late 20's.

[Matt_H]

a defender.....aerodynamic :shock:  .....ya avin a laugh arntcha lol. y go n stick a v8 in wen u can play submarines with the 200 in ......stick a disco 200 in and get a little over 28mpg that is what im gettin out of mine but i didnt use a steve parker conversion .....i used my brain n a disco gearbox....alot more room then for the exhaust....so you have alot more free flow exhaust wich doesnt choke the engine 2 death and lack its power and decrease the mpg. that is what i wud do in your shoes......cuz i did it. u just need 2 b a gud fabricator.

my disco would only get 25mpg and that was if i was being really careful.. but i blame the tyres (grizzlies)....

If u used a disco g/b that puts the levers further back as you'd have to use disco bell housing, what did ya do with the middle seat?

Can't see having more room for an exhaust is that much of a sellin point tho!

Now I think transfer box is lower than standard but i'm told olver/under drive doesnt really make any differnece to consumption just noise when cruising.   Maybe that makes a diff, maybe it dont.

Matt

[Matt_H]

well i have a def and a disco exhaust i'm looking at and the disco one is roughly the same size - only a few mm bigger for the disco one.. it's close to 2" so can't see that strangling perfomance or mpg.... pleae explain more!

Matthew

[Jim-Willy]

I'm guessing he means a Disco transfer box, i'd like one for mine it gives you easier motorway cruising due to being higher geared.

[Matt_H]

just sold my disco x-fer box for £150!  whoops.

He must be talking about main gearbox as transfer box exactly the same externally so wouldnt give more room for an exhaust.... hmmmm

Maybe I should just get some 35" inch tyres instead :-)  Saying that, been there and done that with the disco (big tyres) and spent a year or so modifgying body work etc to get everything to fit - not sure I fancy that on the 90..I just spent half the day today modding the exhaust as it caughton the back tyre.  Can see that the tyres catch on the arches on extreme articulation too, not sure what to do about that for now though.

Matthew

[ianc]

well i've been getting a fairly constant 26mpg from mine, but then i have got a light right foot

Ian

[extreme90]

didnt av a middle seat wuddnt like 2 ever sit there, yes its a disco gearbox ...yes a shortstick it pushes the engine 2 were a 300sits. i origionaly had a parker conversion kit on but it was crap....it chocked the engine 2 death now fine and did the sums agen it works out at 27.6mpg steady 60 on long runs wiv 205's on........darnt do it with the grizzlys lol.....tiz a 60l tank by the way isnt it  :shock:  if not den back to the sums. but to fit it i made 2 new engine mounts and for the gearstick.....a angle grinder soon sorted that out......wak a bit of chequre plate on top and jobs a gud en. also comes in handy if i come across a gud 300 but think i stick 2 d gud old smokey 200tdi

[extreme90]

you gain 5 inches more away from the bulkhead against the turbo...im onabout just fit a disco 200tdi in2 ur defender....i previously had a 200tdi defender engine fitted but it was crap compared 2 my friends 200tdi disco powerd 90 so i changed over  alot of a differnece but i felt i cud get more out of mine compared 2 my friend with the parker . so i did a bit of modding and it payed off alot more responsive and no more black sut around no 4 exhaust manifold from where it was gettin chocked....just the outlet 4 the turbo is a ******* pain in d arse

[Matt_H]

didnt av a middle seat wuddnt like 2 ever sit there, yes its a disco gearbox ...yes a shortstick it pushes the engine 2 were a 300sits. i origionaly had a parker conversion kit on but it was crap....it chocked the engine 2 death now fine and did the sums agen it works out at 27.6mpg steady 60 on long runs wiv 205's on........darnt do it with the grizzlys lol.....tiz a 60l tank by the way isnt it  :shock:  if not den back to the sums. but to fit it i made 2 new engine mounts and for the gearstick.....a angle grinder soon sorted that out......wak a bit of chequre plate on top and jobs a gud en. also comes in handy if i come across a gud 300 but think i stick 2 d gud old smokey 200tdi

You can't really do mpg calcs against a tank size as you probably neer drain the tank, do it click to click from a petrol station and you can then work it out from the metered fuel going in.

I've made a little excel spreadsheet to work it out for me.

Matthew

[bezzabsa]

in my 2.25 diesel s3 im getting low 20's in my 300 disco i was getting 28 in town and 35 on long runs. if hes getting 20 from a V8 range he either has a very light right foot or doesnt drive anywhere - best i ever got from my range was 12mpg round town and 18 on a run....strangely though my 1990 G plate V8 disco used to do 19 round town, and that was on carbs??

[zacjake]

didnt av a middle seat wuddnt like 2 ever sit there, yes its a disco gearbox ...yes a shortstick it pushes the engine 2 were a 300sits. i origionaly had a parker conversion kit on but it was crap....it chocked the engine 2 death now fine and did the sums agen it works out at 27.6mpg steady 60 on long runs wiv 205's on........darnt do it with the grizzlys lol.....tiz a 60l tank by the way isnt it  :shock:  if not den back to the sums. but to fit it i made 2 new engine mounts and for the gearstick.....a angle grinder soon sorted that out......wak a bit of chequre plate on top and jobs a gud en. also comes in handy if i come across a gud 300 but think i stick 2 d gud old smokey 200tdi

HI,
have you got any pictures of the Disco gearbox conversion as I am going to fit one in my 90.
Cheers.

[tiltboy]

Hi All.

I get a staedy 29-31mpg (combined driving) out of my 200 tdi defender. It's a '93 model year 90 soft top with a disco transfer box and 235/85/16 muds. My speedo is out because of this and I've measured mileage against my GPS.

From ten gallons of fuel I get 300 miles (ish). Mainly country roads and low speeds, but it doesn't change that greatly with road speed or conditions.

Maybe I drive slowly, but it pays doesn't it? :lol:

[Matt_H]

well it looks like my inj pump is up the swanny with this cold starting issue - just trtying to find a second hand one somewhere that I can get reconned as mine is still technically working for now.

Matthew

[smo]

In my TD5 90 i average between 25 and 30 usually.

Last night i covered 215 miles at approx 60mph (altho there were local slower bits at both ends of journey and a few stops along the way) and managed to return 30.44MPG which isnt too bad :)

[davidjmiller]

My 1986 3.5L V8 gets scary mpg on petrol - but when I run it on gas and multiply the mpg by the price of diesel over the price of gas then I get around 24. Only problem is that with an 80L tank which only takes around 65L I have to go to the petrol station 3 times a fortnight.

Forget the diesel - it sounds terrible and it does n't have the power. you know it makes sense.

David

[stefan]

I did check the MPG of my 90 when I first put the Discovery 200Tdi engine in, I kind of reckoned it was around 28MPG, but my speedo reads out quite a bit due to the 265/75 MT's fitted, I did change the speedo gear in the box from the original one fitted for the 205 tyres, but it still reads out, so if you are doing the usual fill to the brim, run around, fill up again, the figure isn't going to be that accurate.

At the end of the day, it does considerably more than the old 2.5 petrol did, so I'm happy with that...............Well apart from the potential £900 bill to get it through it's MOT!!

Stef

[LandRoger]

I have the straightforward Disco200tdi in 90 csw its on 235/85/16s
taken off the big centre box from exhaust, also back box and just use
small box at front, my driving routine is very stop start low millage, my calculations lead me to think im getting around 30ish + the motor is very responsive -but it is a rebuilt motor with just about new everything,
and set up very nicely by my local garage that did the conversion and
fabricating of turbo down pipe and exhaust, i rarely push it over 55mph
as i would need ear defenders if i did :lol:  :lol:  very happy with it,