Mpg

landy1959/series2 · May 23, 2009

My landy series 3 engine seemed to be using a lot of fuel and the weber carb was due a service, called in at Landrover Orhanage and Rchard had a new bolt on carb bought one put it on......... umm ....... seems to run smooth but has no go on the hills or pick up from verry low speeds in gears 2 / 3 & 4.
Still only doing 12mpg !!!

Richard said I should be getting 20mpg.

Any help !

rustyrhinos · May 23, 2009

I think the book figure (correct me if I am wrong) for a 2.25 petrol is 19MPG...so you would do pretty well to get that 30/40 years on! On our recent trip our MPG ranged from 10 (deep sand) to 18 MPG.

Seems strange that you now have less performance!

mickdj · May 24, 2009

i had a 2/14 diesel and would only get 18mpg on a long run, fitted a 200tdi now get late 20`s

clivees · May 26, 2009

2.25 3 bearing should get 10 to 15 off road / round town and high teens on a long run

landy1959/series2 · May 27, 2009

Had a look at carb did a small adjustment its set up properly now and is picking up much better in 2/3&4.. Will post mpg when I refill.

landy1959/series2 · Jun 1, 2009

um.................... just refilled 16mpg. thats driving carefull !!!

landybird · Jun 1, 2009

lol thats not bad, ours does about 12-15mpg depending on what mood she's in

the joys of old vehicles and todays petrol prices:doh:

rustyrhinos · Jun 2, 2009

Sounds about right! I was quite happy when we were getting 18MPG! Weirdly we seem to get better MPG on crap quality fuel.

landybird · Jun 2, 2009

if we got 18mpg i think hubby would get far too excited

90truckcab · Jun 4, 2009

my 2.25 petrol - under 9mpg towing me sankey trailer, up to 14-15 mpg max on road if driving really carefully !
my diesel- late teens up to mid 20's

ah , yer pay do the price fer luxury

w3526602 · Jun 4, 2009

Hi,

Crap fuel? Academic nowadays, unless you have a source of 4 star?

Brief history, speaking through my zorst. As compression ratios increased during the 1950 - 1960s, cars started to pink. Increasing the compression ratio makes the fuel burn faster. So they increased the octane rating, to reduce the burn speed.

Now, put hi-octane fuel into a lo-comp engine, you reduce the burn speed too. So without the advantage of a high compression engine, you are reducing the power.

Thats my theory. Perhaps somebody can translate it into Tech-speak?

602

Mpg

landy1959/series2

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rustyrhinos

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mickdj

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clivees

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landy1959/series2

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landy1959/series2

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landybird

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rustyrhinos

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landybird

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