taking the plunge LPG

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john oakes

Guest
Well Chaps.
I have decided to join the the ever growing march deprive
Gordon Brown an income for the poor. Tuesday next week my little 110 v8
3.5 1988 is being converted to lpg. What should I get in improvements
mileage or just cost for gas.

regards john
 

"john oakes" <[email protected]> wrote in message
news:[email protected]...
> Well Chaps.
> I have decided to join the the ever growing march deprive
> Gordon Brown an income for the poor. Tuesday next week my little 110 v8
> 3.5 1988 is being converted to lpg. What should I get in improvements
> mileage or just cost for gas.
>
> regards john

my understanding is the only improvement is the one that matters - pence per
mile. Power should be about the same, and mpg will technically be lower.

Si (waiting to get his disco done)


 
On Fri, 14 Apr 2006 06:31:17 +0100, "Si Kellow"
<[email protected]> wrote:

>
>"john oakes" <[email protected]> wrote in message
>news:[email protected]...
>> Well Chaps.
>> I have decided to join the the ever growing march deprive
>> Gordon Brown an income for the poor. Tuesday next week my little 110 v8
>> 3.5 1988 is being converted to lpg. What should I get in improvements
>> mileage or just cost for gas.
>>
>> regards john
>
>my understanding is the only improvement is the one that matters - pence per
>mile. Power should be about the same, and mpg will technically be lower.
>
>Si (waiting to get his disco done)
>
If set up properly then power should be the same. MPG on gas will be
slightly down from petrol (my car gets 22-24mpg on gas compared to 25+
on petrol)
You will also have to spend extra money and time keeping your ignition
system up to scratch as LPG is much more demanding of a good spark.
 
On or around Fri, 14 Apr 2006 08:47:33 +0100, Tom Woods
<[email protected]> enlightened us thusly:

>On Fri, 14 Apr 2006 06:31:17 +0100, "Si Kellow"
><[email protected]> wrote:
>
>>
>>"john oakes" <[email protected]> wrote in message
>>news:[email protected]...
>>> Well Chaps.
>>> I have decided to join the the ever growing march deprive
>>> Gordon Brown an income for the poor. Tuesday next week my little 110 v8
>>> 3.5 1988 is being converted to lpg. What should I get in improvements
>>> mileage or just cost for gas.
>>>
>>> regards john
>>
>>my understanding is the only improvement is the one that matters - pence per
>>mile. Power should be about the same, and mpg will technically be lower.
>>
>>Si (waiting to get his disco done)
>>
>If set up properly then power should be the same. MPG on gas will be
>slightly down from petrol (my car gets 22-24mpg on gas compared to 25+
>on petrol)

You only get the same power by burning more fuel. So your maximum power
will be down a bit.

If you don't get 80% of the petrol MPG there's something wrong with it, and
it should be possible to start it on gas from stone cold, again, if it
won't, there's something wrong with it, so don't be fobbed off.

On SU-carbed or similar engines with dashpots on the carbs, it's possible
for all the dashpot oil to slope off (no, I don't know how) and this to
cause problems when you try to run on petrol after several months of running
on gas.

There's also an argument in favour of fitting carb piston lifters. This is
supposed to reduce wear and tear on the needle and its jet from running dry.
I don't know whether this is really necessary though.
--
Austin Shackles. www.ddol-las.net my opinions are just that
Satisfying: Satisfy your inner child by eating ten tubes of Smarties
from the Little Book of Complete B***ocks by Alistair Beaton.
 
On Fri, 14 Apr 2006 09:13:24 +0100, Austin Shackles
<[email protected]> wrote:

>>If set up properly then power should be the same. MPG on gas will be
>>slightly down from petrol (my car gets 22-24mpg on gas compared to 25+
>>on petrol)
>
>You only get the same power by burning more fuel. So your maximum power
>will be down a bit.

Mine certainly is! I have had it professionally retuned and concluded
the mixer is probably unable to deliver sufficient gas at full
throttle. It is a landi renzo fitting (89 110 V8 SU) and open loop. I
feel certain a closed loop would have paid for itself but wasn't
offered at the time I converted.
>
>If you don't get 80% of the petrol MPG there's something wrong with it, and
>it should be possible to start it on gas from stone cold, again, if it
>won't, there's something wrong with it, so don't be fobbed off.

I actually logged my consumption for the first couple of years and it
was near enough 75% of petrol, pretty much the same as calorific
value. I start and run mine entirely on lpg unless I run out. I have
found no cheap lpg outlets around here (NW Surrey) but lpg is still
50% cost of petrol so my fuel costs are 66% of petrol.

AJH

 

"Tom Woods" <[email protected]> wrote in message
news:[email protected]...
> On Fri, 14 Apr 2006 06:31:17 +0100, "Si Kellow"
> <[email protected]> wrote:
>
>>
>>"john oakes" <[email protected]> wrote in message
>>news:[email protected]...
>>> Well Chaps.
>>> I have decided to join the the ever growing march deprive
>>> Gordon Brown an income for the poor. Tuesday next week my little 110
>>> v8
>>> 3.5 1988 is being converted to lpg. What should I get in
>>> improvements
>>> mileage or just cost for gas.
>>>

<snip>

I used to get around 2.5 miles/litre of lpg (11-12mpg) with my 3.5
carburetor Range Rover.

> You will also have to spend extra money and time keeping your ignition
> system up to scratch as LPG is much more demanding of a good spark.

Including 80 quid a set HT Magnecor plug leads, if you believe some
folk.

And you may spend quite bit driving round finding somewhere that sells
the stuff (at 20p /mile it mounts up), which you'll need to do far more
often than you'd think, unless you're spending a fortune on fuel tanks
and/or losing half your load space. The trouble with a 48 litre
(usable) tank is that after 80 miles you start looking for the next lpg
filling station, given that there aren't all that many of them, that a
lot of them are only open "office" hours, and that those that are open
may well not have a working pump. Don't assume you'll always fill up at
Morrison's, unless you only make a limited range of journeys and drive
past one.

And you may (or may not, if you're lucky) either be faced with a more
limited choice of insurance company, or a higher premium.


--
Kevin Poole
**Use current month and year to reply (e.g. [email protected])***
Car Transport by Tiltbed Trailer - based near Derby

 
In message <[email protected]>, john oakes
<[email protected]> writes
>Well Chaps.
> I have decided to join the the ever growing march deprive
>Gordon Brown an income for the poor. Tuesday next week my little 110 v8
>3.5 1988 is being converted to lpg. What should I get in improvements
>mileage or just cost for gas.


How many miles a year do you do ?
--
Marc Draper
 
On Fri, 14 Apr 2006 09:13:24 +0100, Austin Shackles
<[email protected]> wrote:

>On SU-carbed or similar engines with dashpots on the carbs, it's possible
>for all the dashpot oil to slope off (no, I don't know how) and this to
>cause problems when you try to run on petrol after several months of running
>on gas.

The stromberg CD-175 carb (or is it CD-150?) on my car runs fine with
no oil in. Revs are a bit 'sticky' on petrol but that doesnt realy
bother me since i only use it when i run out of gas.

Some V8's and the 2.6 LR's used the same carb so they should be fine
too.

 
On or around Fri, 14 Apr 2006 11:15:29 +0100, Tom Woods
<[email protected]> enlightened us thusly:

>On Fri, 14 Apr 2006 09:13:24 +0100, Austin Shackles
><[email protected]> wrote:
>
>>On SU-carbed or similar engines with dashpots on the carbs, it's possible
>>for all the dashpot oil to slope off (no, I don't know how) and this to
>>cause problems when you try to run on petrol after several months of running
>>on gas.
>
>The stromberg CD-175 carb (or is it CD-150?) on my car runs fine with
>no oil in. Revs are a bit 'sticky' on petrol but that doesnt realy
>bother me since i only use it when i run out of gas.
>
>Some V8's and the 2.6 LR's used the same carb so they should be fine
>too.

every engine is different. The SU carbed minibus I had, 2-litre O series,
refused to start at all with no oil in the dashpot. Others will start but
not idle, or run more or less normally.
--
Austin Shackles. www.ddol-las.net my opinions are just that
"There is plenty of time to win this game, and to thrash the Spaniards
too" Sir Francis Drake (1540? - 1596) Attr. saying when the Armarda was
sighted, 20th July 1588
 
Marc Draper <[email protected]> uttered summat worrerz funny about:

>
> How many miles a year do you do ?

Nice little conversion cost routine malarky wotsit thingmobob here.

http://www.car-gas.co.uk/

Lee
--
www.lrproject.com
Reaching the parts other Landrover restorers can't reach - JLo makes new
home in the USA.
Percy IIa - two Engines to the mile, awaits a new chassis.
Morph - He's "living the dream".



 
In <[email protected]> AJH wrote:
> On Fri, 14 Apr 2006 09:13:24 +0100, Austin Shackles
> <[email protected]> wrote:
>
>>>If set up properly then power should be the same. MPG on gas will be
>>>slightly down from petrol (my car gets 22-24mpg on gas compared to
>>>25+ on petrol)
>>
>>You only get the same power by burning more fuel. So your maximum
>>power will be down a bit.
>
> Mine certainly is! I have had it professionally retuned and concluded
> the mixer is probably unable to deliver sufficient gas at full
> throttle. It is a landi renzo fitting (89 110 V8 SU) and open loop. I
> feel certain a closed loop would have paid for itself but wasn't
> offered at the time I converted.
>>
>>If you don't get 80% of the petrol MPG there's something wrong with it,
>>and it should be possible to start it on gas from stone cold, again,
>>if it won't, there's something wrong with it, so don't be fobbed off.
>
> I actually logged my consumption for the first couple of years and it
> was near enough 75% of petrol, pretty much the same as calorific
> value. I start and run mine entirely on lpg unless I run out. I have
> found no cheap lpg outlets around here (NW Surrey) but lpg is still
> 50% cost of petrol so my fuel costs are 66% of petrol.
>
> AJH
>
>
Thanks for the replies.
I will try and keep a log of the difference.
At the moment I do about 100+ a week and the tank I will be fitted where
the bench seat on my 110 nearly full length.

regards john
 
Gordon Brown has heard this rumour that yet another 4x4 will be going to LPG
anymore of this, and he will be selling LPG for about 95p Ltr.
GGJ

"john oakes" <[email protected]> wrote in message
news:[email protected]...
> Well Chaps.
> I have decided to join the the ever growing march deprive
> Gordon Brown an income for the poor. Tuesday next week my little 110 v8
> 3.5 1988 is being converted to lpg. What should I get in improvements
> mileage or just cost for gas.
>
> regards john


 
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