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Author Topic: LPG Stag Kit on 2.2  (Read 3564 times)

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feeutfo

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Re: LPG Stag Kit on 2.2
« Reply #15 on: 29 September 2009, 18:13:52 »
can squeeze 52 litres in mine. Which gives about 180 miles driving like a knob, or 220 on a gentle run at sensable speeds. But thats a 3.2. Would guess that would be better in a 2.2 ?
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tunnie

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Re: LPG Stag Kit on 2.2
« Reply #16 on: 29 September 2009, 18:25:40 »
Quote
can squeeze 52 litres in mine. Which gives about 180 miles driving like a knob, or 220 on a gentle run at sensable speeds. But thats a 3.2. Would guess that would be better in a 2.2 ?

220 miles from 52 litres? Thats only 19 mpg  :o

Is the the best you can get from gas?  :-/

Motorway runs 3.2/2.2 economy is roughly the same, 3.2 can even be better  ;D
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Omegatoy

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Re: LPG Stag Kit on 2.2
« Reply #17 on: 29 September 2009, 18:30:23 »
gas is less calorific value then petrol so you have to use more to go the sme distance!! anyway if the bootspace is a worry just have 2 smaller tanks either side of the boot then you can still use the seatback fold down system!! did this on a supra many moons ago worked well, jm2pw :y
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tunnie

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Re: LPG Stag Kit on 2.2
« Reply #18 on: 29 September 2009, 18:31:58 »
Quote
gas is less calorific value then petrol so you have to use more to go the sme distance!! anyway if the bootspace is a worry just have 2 smaller tanks either side of the boot then you can still use the seatback fold down system!! did this on a supra many moons ago worked well, jm2pw :y

What puts me off is you can only get 20-25 mpg at best.... i'd rather get a 2.5TD and keep all practicality.
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Omegatoy

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Re: LPG Stag Kit on 2.2
« Reply #19 on: 29 September 2009, 18:41:16 »
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gas is less calorific value then petrol so you have to use more to go the sme distance!! anyway if the bootspace is a worry just have 2 smaller tanks either side of the boot then you can still use the seatback fold down system!! did this on a supra many moons ago worked well, jm2pw :y

What puts me off is you can only get 20-25 mpg at best.... i'd rather get a 2.5TD and keep all practicality.

I definetly wouldnt argue against that!! :y there is a nice very low mileage saloon on ebay at the mo or was it autotrader ::) one of the two anyway!!!
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tunnie

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Re: LPG Stag Kit on 2.2
« Reply #20 on: 29 September 2009, 18:50:57 »
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Quote
Quote
gas is less calorific value then petrol so you have to use more to go the sme distance!! anyway if the bootspace is a worry just have 2 smaller tanks either side of the boot then you can still use the seatback fold down system!! did this on a supra many moons ago worked well, jm2pw :y

What puts me off is you can only get 20-25 mpg at best.... i'd rather get a 2.5TD and keep all practicality.

I definetly wouldnt argue against that!! :y there is a nice very low mileage saloon on ebay at the mo or was it autotrader ::) one of the two anyway!!!

This one?

http://search.autotrader.co.uk/es-uk/www/cars/VAUXHALL+OMEGA/Ne-2-4-5-6-7-8-27-44-49-53-61-64-67-103-133-146-236,N-51-240-4294966638-4294966947/advert.action?R=200939342386750&distance=188&postcode=NN13+6ER&channel=CARS&make=VAUXHALL&model=OMEGA&min_pr=&max_pr=&max_mileage=&vehicleYearOfManufacture=2000&vehicleRegLetter=X
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Omegatoy

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Re: LPG Stag Kit on 2.2
« Reply #21 on: 29 September 2009, 18:51:09 »
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tunnie

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Re: LPG Stag Kit on 2.2
« Reply #22 on: 29 September 2009, 18:52:29 »
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feeutfo

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Re: LPG Stag Kit on 2.2
« Reply #23 on: 29 September 2009, 21:56:26 »
Quote
Quote
Quote
Quote
gas is less calorific value then petrol so you have to use more to go the sme distance!! anyway if the bootspace is a worry just have 2 smaller tanks either side of the boot then you can still use the seatback fold down system!! did this on a supra many moons ago worked well, jm2pw :y

What puts me off is you can only get 20-25 mpg at best.... i'd rather get a 2.5TD and keep all practicality.

I definetly wouldnt argue against that!! :y there is a nice very low mileage saloon on ebay at the mo or was it autotrader ::) one of the two anyway!!!

This one?

http://search.autotrader.co.uk/es-uk/www/cars/VAUXHALL+OMEGA/Ne-2-4-5-6-7-8-27-44-49-53-61-64-67-103-133-146-236,N-51-240-4294966638-4294966947/advert.action?R=200939342386750&distance=188&postcode=NN13+6ER&channel=CARS&make=VAUXHALL&model=OMEGA&min_pr=&max_pr=&max_mileage=&vehicleYearOfManufacture=2000&vehicleRegLetter=X

A Gls tracter? As Andy B said on another thread, i'd rather stick pins in my eyes.

So whats the pence per mile tracter v lpg 3.2?
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Entwood

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Re: LPG Stag Kit on 2.2
« Reply #24 on: 29 September 2009, 22:10:08 »
Quote
gas is less calorific value then petrol so you have to use more to go the sme distance!! anyway if the bootspace is a worry just have 2 smaller tanks either side of the boot then you can still use the seatback fold down system!! did this on a supra many moons ago worked well, jm2pw :y

Actualy incorrect... LPG has a higher calorific content when in liquid form .... ie ... gallon for gallon, but has a lower Specific Gravity .. ie it weighs less.

All engines actually burn a MASS of fuel.. ie .. a certain number of molecules...  not a volume ... and LPG in vapour form weighs less then petrol, which is why more volume is used per mile.

The best way to compare the 2 is NOT by a false volume/mile or mass/mile calculation .. but a cost/mile one...

ie how many pence /mile does it cost on petrol v gas.

On my conversion over 16767 miles .. the actual running cost on LPG is presently 14.25 pence/mile v an estimated 22.86 pence/mile on petrol... a saving of 8.61 pence for every mile travelled. (37.66%)

Due to rising petrol prices over the last 2 months it has actualy been  just over 10 pence/mile but that will change as prices change

HTH
« Last Edit: 29 September 2009, 22:12:08 by entwood »
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tunnie

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Re: LPG Stag Kit on 2.2
« Reply #25 on: 29 September 2009, 22:21:53 »
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gas is less calorific value then petrol so you have to use more to go the sme distance!! anyway if the bootspace is a worry just have 2 smaller tanks either side of the boot then you can still use the seatback fold down system!! did this on a supra many moons ago worked well, jm2pw :y

Actualy incorrect... LPG has a higher calorific content when in liquid form .... ie ... gallon for gallon, but has a lower Specific Gravity .. ie it weighs less.

All engines actually burn a MASS of fuel.. ie .. a certain number of molecules...  not a volume ... and LPG in vapour form weighs less then petrol, which is why more volume is used per mile.

The best way to compare the 2 is NOT by a false volume/mile or mass/mile calculation .. but a cost/mile one...

ie how many pence /mile does it cost on petrol v gas.

On my conversion over 16767 miles .. the actual running cost on LPG is presently 14.25 pence/mile v an estimated 22.86 pence/mile on petrol... a saving of 8.61 pence for every mile travelled. (37.66%)

Due to rising petrol prices over the last 2 months it has actualy been  just over 10 pence/mile but that will change as prices change

HTH

On my calculations then, my 2.2 is being as economical as LPG.  :-/

On my first 3 days at Sky i used 1 tank of fuel (59.66L of fuel at 106.9)

Tank was brimmed before, and brimmed after, did a total of 445 miles on that fuel.

So that works out at 33.91 mpg or 14.33 pence per mile.

Unless you are adding other costs to you per mile calculation?
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Entwood

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Re: LPG Stag Kit on 2.2
« Reply #26 on: 29 September 2009, 22:50:38 »
nope .. but I'm running a 3.2 that is driven pretty hard and tows a great deal !!!

The estimated way of doing things is this ...

Your petrol consumption is presently 33.91 mpg @ 14.33 pence /mile.

Estimated LPG would be 20% lower .. so 27.128 mpg. LPG is 52.2 p/litre here or £2.37 a gall  so the estimated LPG cost /mile would be 8.73 pence/mile !!!

 A saving of about 5.6 pence /mile or 39% ... The fuel costs 50% less and you use about 20% more ...  whats to lose ??   :)

IF you went the DIY conversion for £700 ish .. it would be paid for in 8000 miles, if you do 16000 miles a year it is paid for in 6 months ... another way of looking at it is, all figures rounded for simplicity:

16000 a year = 1300 a month ... @ 33.91 mpg thats 33 galls a month thats 150 litres @ 1.06 = £160 a month in fuel.

1300 miles a month on LPG  @ 27.12 mpg = 46 galls = 209 litres @ 52.2 p = £110 a month ....

An instant saving of £50 a month ...  :)
« Last Edit: 29 September 2009, 22:52:09 by entwood »
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feeutfo

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Re: LPG Stag Kit on 2.2
« Reply #27 on: 29 September 2009, 23:34:19 »
anyone got any diesel figures to compare?
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tunnie

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Re: LPG Stag Kit on 2.2
« Reply #28 on: 30 September 2009, 09:14:42 »
Quote
nope .. but I'm running a 3.2 that is driven pretty hard and tows a great deal !!!

The estimated way of doing things is this ...

Your petrol consumption is presently 33.91 mpg @ 14.33 pence /mile.

Estimated LPG would be 20% lower .. so 27.128 mpg. LPG is 52.2 p/litre here or £2.37 a gall  so the estimated LPG cost /mile would be 8.73 pence/mile !!!
 A saving of about 5.6 pence /mile or 39% ... The fuel costs 50% less and you use about 20% more ...  whats to lose ??   :)

quote]

LPG is 57p here, so that works out at 9.5 pence per mile ish...

Not exactly massive savings, plus loss of boot.  :(
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