Mud-club

Vehicle & Technical => Discovery => Topic started by: andrew2986 on March 26, 2008, 10:58:30

Title: What does yours do ?
Post by: andrew2986 on March 26, 2008, 10:58:30

Hi all,
Im curious as to what other V8's on LPG do.
Mine is a 3.9 with single point LPG.
Im getting around 200 miles to 100 liters of gas.
Im sure i used to do better than that, Ive just switched to 267/75 r16's and was wondering if that would make such a big difference, certainly isn't as fast as it was or is that just coincidence and my engine knackered itself the moment I spent the money on new tires and wheels !!!!!

Cheers all


Andy

Title: Re: What does yours do ?
Post by: stuntman on March 26, 2008, 11:07:14

Don't forget to add around 10% to the final mileage per tank, as the speedo reads slightly low so will the tripometer!

so that would be around 220/230 ish to 100 ltrs, is that any better?

Title: Re: What does yours do ?
Post by: andrew2986 on March 26, 2008, 11:27:02

Ahhhhhhh, I did notice that the speedo is now almost bang on, before the bigger tires it always read fast, (compared to the sat-nav speedo)

Andy

Title: Re: What does yours do ?
Post by: Range Rover Blues on March 26, 2008, 15:05:55

Funny, mine now reads correct with 235/85s on :-. but the oddometer is 10% slow.

Title: Re: What does yours do ?
Post by: karlo on March 26, 2008, 15:23:56

Quote from: Range Rover Blues on March 26, 2008, 15:05:55

Funny, mine now reads correct with 235/85s on :-. but the oddometer is 10% slow.

I recently put 265/75's on, my auto used to change up to 4th @ 52mph with the 225/75's that were fitted by the previous owner, It still changes up to 4th @ 52mph?

Title: Re: What does yours do ?
Post by: Range Rover Blues on March 26, 2008, 18:21:35

It will because the speedo drive is on the output of the transfer box and the governer in the auto is on the output of the auto box, so the size of the wheels makes no difference to the corelation between the 2 and the auto box has no way of knowing you've changed the gears.

Title: Re: What does yours do ?
Post by: andrew2986 on March 29, 2008, 09:17:12

Have just found this, quite handy yet strangely depressing at the same time !!

http://www.geocities.com/mpgcalc/

Title: Re: What does yours do ?
Post by: Range Rover Blues on March 29, 2008, 19:31:28

Anyhoo, I get better than 2 ¹/₂ m/l on LPG with the LSE, it's s multipoint on a 5.0L V8 :twisted:, I can get around 12+ if driven carefully.  IIRC Blue is a little better but it runs lean so I loose power :?

Title: Re: What does yours do ?
Post by: Dave on March 29, 2008, 20:04:59

I have a standard disco and that reads faster than you are going on the gps reading about 5 mph  :roll:
I will try it in my other one with 265/75 0n and see what that does. :?

Title: Re: What does yours do ?
Post by: mentalmoshio sophs V8i on March 30, 2008, 00:08:16

last time i checked with the disco v8i engine i was getting 150 m on 52l first done then it dropped  :shock: to 80 m , ive yet to work out the new rebuilt tuned v8i

Title: Re: What does yours do ?
Post by: gtomo2 on March 30, 2008, 09:22:37

I get about 200 miles on lpg as well with a 100 ltr tank.  Dont forget it only fills to 80 ltrs as the extra is for expansion of the gas. Mine is on 235/80/16 tyres as well.

Title: Re: What does yours do ?
Post by: andrew2986 on March 30, 2008, 09:54:22

Hi, Ive got 4 lpg tanks on mine 2 x 40 ltr and 2 x 35 ltr, most of the pumps Ive used automatically shut off at 100 ltrs so  I usually fill up till the pumps stops !
Its just since putting on the bigger tyres my mpg has gone down along with top end performance, I now understand about the speedo and trip reading differently im just surprised at how much difference the bigger tyres have made.
It used to fly along on the motorway but now on long hills I find I have to click it back to 3 (its an auto) to keep up a decent progress.
Off road  and around town though its still great, ive not noticed any low down lack of performance and it pops along well.
I just wondered If others had found the same or if I should be looking for another reason.

Andy

Title: Re: What does yours do ?
Post by: jjsaul on March 30, 2008, 12:48:57

I've got 4 tanks on my 4.6 as well but i fill it right up (i use a small garage most of the time whose pump stops when you're full rather than at 100lit)...

It takes 130litres when its empty and will do around 200/220 miles on that depending on how its driven...so thats around 7-7.5mpg  :shock: (haven't worked it out in a while)...
Thats running on 245/70R16 BFG AT's which are slightly bigger than standard. The speedo still reads over my GPS, around 5-6mph over at mway speeds.

My old 3.5 EFi on gas used to do between 10-15mpg depending on round town or motorway driving, it was most fuel efficient at 70-80mph!

Title: Re: What does yours do ?
Post by: Ja1983 on March 30, 2008, 22:58:32

200tdi - 27.2 mpg but with the front prop suffering from another knacked UJ, i tend to drive in higher revs a lot... increased fuel and boost on 235/85`s (remould) wont help either... nor will the excessive amount of clutter that lives in the rer footwell (recovery gear, chainsaw, trolley jack etc..)

Title: Re: What does yours do ?
Post by: Range Rover Blues on March 31, 2008, 01:41:44

27 is all we get out of Julie's 300TDi.

Title: Re: What does yours do ?
Post by: Cheggs on April 01, 2008, 16:51:55

I get about 19 mpg out of 200tdi around town or towing, on 7.50's and about 27 on a run.