Omega Owners Forum

Chat Area => General Discussion Area => Topic started by: duggs on 25 July 2011, 13:19:52

Title: Love the V6 !
Post by: duggs on 25 July 2011, 13:19:52
Everytime I fill the V6 up with fuel, normally every 4/5 days on average, I ask myself "Why on earth did I get a big V6 in today's financial climate"...

THEN I blip the throttle...and I remember why all over again !

 :y ;)
Title: Re: Love the V6 !
Post by: TheBoy on 25 July 2011, 13:25:15
At 70.9p a litre, I don't care :D
Title: Re: Love the V6 !
Post by: Field Marshal Dr. Opti on 25 July 2011, 13:29:15
Quote
At 70.9p a litre, I don't care :D


I presume you mean LPG. I've asked this question before but sadly I'm too thick to fully understand the answer. I'll try again. Why does a car do less miles per gallon on LPG rather than petrol?. Anyone?
Title: Re: Love the V6 !
Post by: duggs on 25 July 2011, 13:34:43
Fortunately at 45p a mile, business use.... I'm not overly bothered either. The £ 11.25p per gallon on average the company pays me covers all my fuel business and private.

Sure !  I could make a few extra £'s if i drove a 10 year old hatchback of some kind but where's the fun in that ?
Title: Re: Love the V6 !
Post by: geoffr70 on 25 July 2011, 13:37:49
Something to do with less calorific value of gas compared to petrol.
Title: Re: Love the V6 !
Post by: TheBoy on 25 July 2011, 13:38:06
Quote
Quote
At 70.9p a litre, I don't care :D


I presume you mean LPG. I've asked this question before but sadly I'm too thick to fully understand the answer. I'll try again. Why does a car do less miles per gallon on LPG rather than petrol?. Anyone?
In laymans terms, less power in that litre of LPG
Title: Re: Love the V6 !
Post by: TheBoy on 25 July 2011, 13:38:46
Quote
Fortunately at 45p a mile, business use.... I'm not overly bothered either. The £ 11.25p per gallon on average the company pays me covers all my fuel business and private.

Sure !  I could make a few extra £'s if i drove a 10 year old hatchback of some kind but where's the fun in that ?
You still get 45ppm business use, LPG, petrol or diesel ::)
Title: Re: Love the V6 !
Post by: duggs on 25 July 2011, 14:26:07
Good point Jamie !
Title: Re: Love the V6 !
Post by: omegod on 25 July 2011, 14:44:41
Quote
Quote
Fortunately at 45p a mile, business use.... I'm not overly bothered either. The £ 11.25p per gallon on average the company pays me covers all my fuel business and private.

Sure !  I could make a few extra £'s if i drove a 10 year old hatchback of some kind but where's the fun in that ?
You still get 45ppm business use, LPG, petrol or diesel ::)

My firm couldn't care less, same rate regardless! 
Title: Re: Love the V6 !
Post by: Entwood on 25 July 2011, 14:50:34
Every engine ever built burns a MASS of fuel when mixed with a MASS of air.

LPG weighs less than petrol.. ie .. the same volume has less MASS so you get fewer miles per VOLUME.

If we bought fuel by MASS ... ie kilogrammes... the fuel consumption in "miles per kilo" (or pound if you are pre-metric) would be identical.

We have a MAF (MASS air flow) regulator to measure the MASS of air entering the engine .. it does NOT measure the volume of air. The MASS of a fixed volume changes with temperature and pressure, your engine produces more power on a dry, cold day than it does on a hot, wet one, as dry, cold air is the more dense .. so is a higher MASS, thus more fuel is added to burn that extra air .. so you get more power .... :)

HTH

EDIT .. before any pedants decide to join in .. I base the above on the calorific values of the fuels as being almost equal ... petrol having a range of 44.8-46.9 MJ/kg and LPG having a range of 44.1-46.1 MJ/kg. Those figures will vary depending which web site you look up .....  :)
Title: Re: Love the V6 !
Post by: duggs on 25 July 2011, 16:03:19
LOL !  Now thats's an explanation.
Title: Re: Love the V6 !
Post by: Field Marshal Dr. Opti on 25 July 2011, 17:40:56
Quote
Every engine ever built burns a MASS of fuel when mixed with a MASS of air.

LPG weighs less than petrol.. ie .. the same volume has less MASS so you get fewer miles per VOLUME.

If we bought fuel by MASS ... ie kilogrammes... the fuel consumption in "miles per kilo" (or pound if you are pre-metric) would be identical.

We have a MAF (MASS air flow) regulator to measure the MASS of air entering the engine .. it does NOT measure the volume of air. The MASS of a fixed volume changes with temperature and pressure, your engine produces more power on a dry, cold day than it does on a hot, wet one, as dry, cold air is the more dense .. so is a higher MASS, thus more fuel is added to burn that extra air .. so you get more power .... :)

HTH


Thanks Entwood. A far more comprehensive answer than the one old TB could come up with.... ::) ::) :y
Title: Re: Love the V6 !
Post by: TheBoy on 25 July 2011, 18:06:03
Opti - I was trying to put it in terms I you would understand :P
Title: Re: Love the V6 !
Post by: Amigo on 25 July 2011, 18:14:20
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
Title: Re: Love the V6 !
Post by: ninjapirate on 25 July 2011, 19:13:29
Quote
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
reeeaaally missed my v6 today, havind to drop a couple cogs joining the motorway at 55mph in the 2.2 just feels like i have to work it soo hard!
really if i could use a 2.6 and do the trips that i mostly use mine for to see what differance in mpg i get id be happy.
i really dont want to get a v6 then find im much worse off fuel wise, but i have this feeling i wont be as im having to push the 2.2 hard.
Title: Re: Love the V6 !
Post by: Field Marshal Dr. Opti on 25 July 2011, 19:17:30
Quote
Quote
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
reeeaaally missed my v6 today, havind to drop a couple cogs joining the motorway at 55mph in the 2.2 just feels like i have to work it soo hard!
really if i could use a 2.6 and do the trips that i mostly use mine for to see what differance in mpg i get id be happy.
i really dont want to get a v6 then find im much worse off fuel wise, but i have this feeling i wont be as im having to push the 2.2 hard.


Console yourself with the fact that the 2.2 has a bigger/longer bore and stroke than the 2.6 (I think) :y :y
Title: Re: Love the V6 !
Post by: ninjapirate on 25 July 2011, 19:21:30
Quote
Quote
Quote
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
reeeaaally missed my v6 today, havind to drop a couple cogs joining the motorway at 55mph in the 2.2 just feels like i have to work it soo hard!
really if i could use a 2.6 and do the trips that i mostly use mine for to see what differance in mpg i get id be happy.
i really dont want to get a v6 then find im much worse off fuel wise, but i have this feeling i wont be as im having to push the 2.2 hard.


Consle yourself with the fact that the 2.2 has a bigger/longer bore and stroke than the 2.6 (I think) :y :y
i dont feel consoled  ;D   i want more power! more cylinders! lol as its the workhorse run around, and i did majorly fail at buying something bigger but cheap to run, i have to be quiet lol  its a major improvment over the car it replaced, and worth every litre of extra fuel it uses. maybe i can just release some more horses from it.

why did the 2.2 vectra engine make more power then the 2.2 omega? 
Title: Re: Love the V6 !
Post by: TheBoy on 25 July 2011, 19:26:42
Vectra lump is very, very different
Title: Re: Love the V6 !
Post by: LJay on 25 July 2011, 19:28:03
Quote
Quote
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
reeeaaally missed my v6 today, havind to drop a couple cogs joining the motorway at 55mph in the 2.2 just feels like i have to work it soo hard!
really if i could use a 2.6 and do the trips that i mostly use mine for to see what differance in mpg i get id be happy.
i really dont want to get a v6 then find im much worse off fuel wise, but i have this feeling i wont be as im having to push the 2.2 hard.

I went from a 2.2 auto to a 3 litre manual and still got roughly 300 miles to a tank. Not sure what the 2.6 figures would be though.  And it is infinately more fun to drive. ::)
I tend to do a lot of short trips, school run etc. so economy isn't great for me.  Can/could get 500 miles on long motorway runs though. :y
I dread the day I no longer run a V6. :(

I'm guessing big car means bigger engine doesn't need to work as hard as the smaller one does? :-/
Title: Re: Love the V6 !
Post by: ninjapirate on 25 July 2011, 19:28:10
Quote
Vectra lump is very, very different

really? i thought someone on here told me it was basicly just the belt/chain differance. which is why i was wondering if i could use any vectra parts to increase power, it seems not then lol
Title: Re: Love the V6 !
Post by: LJay on 25 July 2011, 19:30:46
Quote
Quote
Quote
Quote
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
reeeaaally missed my v6 today, havind to drop a couple cogs joining the motorway at 55mph in the 2.2 just feels like i have to work it soo hard!
really if i could use a 2.6 and do the trips that i mostly use mine for to see what differance in mpg i get id be happy.
i really dont want to get a v6 then find im much worse off fuel wise, but i have this feeling i wont be as im having to push the 2.2 hard.


Consle yourself with the fact that the 2.2 has a bigger/longer bore and stroke than the 2.6 (I think) :y :y
i dont feel consoled  ;D   i want more power! more cylinders! lol as its the workhorse run around, and i did majorly fail at buying something bigger but cheap to run, i have to be quiet lol  its a major improvment over the car it replaced, and worth every litre of extra fuel it uses. maybe i can just release some more horses from it.

why did the 2.2 vectra engine make more power then the 2.2 omega? 

Rear wheel drive versus front wheel drive for starters?
Title: Re: Love the V6 !
Post by: ninjapirate on 25 July 2011, 19:31:20
Quote
Quote
Quote
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
reeeaaally missed my v6 today, havind to drop a couple cogs joining the motorway at 55mph in the 2.2 just feels like i have to work it soo hard!
really if i could use a 2.6 and do the trips that i mostly use mine for to see what differance in mpg i get id be happy.
i really dont want to get a v6 then find im much worse off fuel wise, but i have this feeling i wont be as im having to push the 2.2 hard.

I went from a 2.2 auto to a 3 litre manual and still got roughly 300 miles to a tank. Not sure what the 2.6 figures would be though.  And it is infinately more fun to drive. ::)
I tend to do a lot of short trips, school run etc. so economy isn't great for me.  Can/could get 500 miles on long motorway runs though. :y
I dread the day I no longer run a V6. :(

I'm guessing big car means bigger engine doesn't need to work as hard as the smaller one does? :-/
well this is what im thinking, the roads i use it on the 4 pot doesnt have the umpth i like.

to be fair, im lucky that most of my trips are national speed limit, shortest trip is about 14 miles round trip to shops and 90% of that is at 60+ mph.  its also smiles per mile too, i can live with a couple mpg drop lol
Title: Re: Love the V6 !
Post by: TheBoy on 25 July 2011, 19:32:43
Quote
Quote
Vectra lump is very, very different

really? i thought someone on here told me it was basicly just the belt/chain differance. which is why i was wondering if i could use any vectra parts to increase power, it seems not then lol
I suspect that the engines are tuned differently anyway, for drivability of the different cars.  Remember, the Omega is rather heavy, so low down torque is far more important than a peak bhp figure, which only serves as a penis measurement tool down the pub
Title: Re: Love the V6 !
Post by: ninjapirate on 25 July 2011, 19:33:53
Quote
Quote
Quote
Quote
Quote
Stuff all that tekkie bollix, V6's are cool as & pull like the proverbial. Keep up the oil/filter changes & change the cambelt/water pump every 40k or 4 years.

  Then ENJOY!!! 8-)
reeeaaally missed my v6 today, havind to drop a couple cogs joining the motorway at 55mph in the 2.2 just feels like i have to work it soo hard!
really if i could use a 2.6 and do the trips that i mostly use mine for to see what differance in mpg i get id be happy.
i really dont want to get a v6 then find im much worse off fuel wise, but i have this feeling i wont be as im having to push the 2.2 hard.


Consle yourself with the fact that the 2.2 has a bigger/longer bore and stroke than the 2.6 (I think) :y :y
i dont feel consoled  ;D   i want more power! more cylinders! lol as its the workhorse run around, and i did majorly fail at buying something bigger but cheap to run, i have to be quiet lol  its a major improvment over the car it replaced, and worth every litre of extra fuel it uses. maybe i can just release some more horses from it.

why did the 2.2 vectra engine make more power then the 2.2 omega? 

Rear wheel drive versus front wheel drive for starters?

no these were flywheel figures i was looking at so the layout wouldnt make a differance.

i suppose what i would spend getting more power from my 2,2 would A pay for more fuel on v6, and b buy a v6 lol

def have the omega bug tho! even toyed with finding a nice mv6, i have a classic car policy for pre 1989 cars thats dirt cheap so something like a 205 diesel could fit on that for the shorter trips.
Title: Re: Love the V6 !
Post by: ninjapirate on 25 July 2011, 19:35:15
Quote
Quote
Quote
Vectra lump is very, very different

really? i thought someone on here told me it was basicly just the belt/chain differance. which is why i was wondering if i could use any vectra parts to increase power, it seems not then lol
I suspect that the engines are tuned differently anyway, for drivability of the different cars.  Remember, the Omega is rather heavy, so low down torque is far more important than a peak bhp figure, which only serves as a penis measurement tool down the pub

yeh im guessing the omega is more torque orientated for its size. but if its a totaly differant engine i wont look no further