[xj] implant Diesel engine into 1998 xj8 or gas conversion

hi,

has anyone done this or considered doing this …
heart transplant … ie Diesel engine out of the new xj into
the old … what should one consider before getting a
mechanic to do this.
will the suspension on the front need to be changed?
will the original gearbox work or need a gear box as well.

alternativly … how good are these gas conversions? and
where to get information about this in Swansea Wales?

its just that the car is great comfortable … mechanicaly
perfect but finding it on the thirsty side so was wondering
how to improve the fuel consuption. at the moment averaging
18.7mpg around town and 20/22 mpg motor way…

thanx
KAL–
JAG XJ8 4.0 V8
Swansea Wales, United Kingdom
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In reply to a message from KhalilK sent Tue 20 Nov 2007:

A diesel from a new Jag would cost 50% the value of your car
probably, and fitting it another 50% assumnig you found anyone
prepared to spend huge amonuts of their time getting up the
leanring curve for you. The trans is different too. If you car is a
late 90s car the percentage would be even higher as it’s not worth
more tha 2-3K anyway depending what year it is.

Even a proper LPG conversion will cost north of 2000 UKP so you
just need to do the maths and work out how many miles it will take
you to recover 2000 difference in fuel. NOT how many miles it would
take to use 2000 of fuel (because you’ll be using fuel no matter
what) it’s how many miles would it take for the difference between
LPG and petrol to reach the cost of your conversion.

If you do 20K miles a year it might be a year, if you do 5K miles
it might be 4 years. But only you know how long you’ll keep the car
etc, although LPG would add something to the final value of the
vehicle at disposal time.–
66 2+2, 73 OTS, 76 DD6 Coup�, 85 XJS 5-spd conver, 93 XJ12
Cambridge, United Kingdom
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In reply to a message from PeterCrespin sent Tue 20 Nov 2007:

Khalilk:

Decisions!!

  1. Drive your car as it is. That’s the way you like it, cause
    that’s the way you bought it.

  2. Drive it until the wheels fall off. Extended by good
    maintenance, probably, the most economical on a cost per mile basis
    of purchase price + fule & maintenance.

  3. Convert to gas or Diesel and do #2.

  4. Don’t worry about selling price, because of #2.

  5. Number three will be recovered because of number 2.

  6. You don’t have to concern your self with recovery time, because
    of number 2.

  7. The cost of petrol, diesel and gas will continue to climb,
    probably at an ever increasing rate.

I just read one economist advising that Saudi Arabia no longer has
the capacity to level out the price of fuel by pumping more, as
they are at capacity. China will increase the demand, so…

Carl–
Carl Hutchins
Walnut Creek, California, United States
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Roger all that Carl. A well maintained old car, driven intelligently is a
better bet right now than a Prius, unless you’re a door-door salesman in a big
city…

http://www.cnn.com/2007/TECH/11/20/green.hummers/index.html

The head of Shell predicted a month or so ago that we’d see $100/bl oil by
year’s end. Looks like he was conservative! He also predicted $150/bl mid
next year. Of course, his prediction needs to consider our sinking $ – pray
the Chinese don’t start asking for cash instead of Treasury Bills (debt)!

Just filled up our '86 Accord yesterday – $40 for the first time. 211,000 mi
on it with an input of 7500 gallons (our little ones); 6600, 1992 purchase
dollars; under $6000 insurance; under $3000 repairs; and worth $1500-3000 today!

These are great times for belated public awareness, so I’m personally rooting
for $4/galUS soon! Maybe at $200/bl, we’ll start asking why we’re burning the
raw nmaterial we depend on for ‘unusual’ stuff, like fabrics, concrete, rugs,
medicines, fertilizer, paint, macadam…

Here’s a quick test to see if you’re a potential Nobel Peace winner too:

a) How many pounds of plant & vegetable matter did it take to make enough
petroleum to get 1 US gallon of gasoline?

b) How many years did it take to form all the known oil deposits?

Do dee doo dooo, do dee doo dooo…–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.

cadjag wrote:

In reply to a message from PeterCrespin sent Tue 20 Nov 2007:

Khalilk:

Decisions!!

  1. Drive your car as it is. That’s the way you like it, cause
    that’s the way you bought it.

  2. Drive it until the wheels fall off. Extended by good
    maintenance, probably, the most economical on a cost per mile basis
    of purchase price + fule & maintenance.

  3. Convert to gas or Diesel and do #2.

  4. Don’t worry about selling price, because of #2.

  5. Number three will be recovered because of number 2.

  6. You don’t have to concern your self with recovery time, because
    of number 2.

  7. The cost of petrol, diesel and gas will continue to climb,
    probably at an ever increasing rate.

I just read one economist advising that Saudi Arabia no longer has
the capacity to level out the price of fuel by pumping more, as
they are at capacity. China will increase the demand, so…

Carl

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In reply to a message from KhalilK sent Tue 20 Nov 2007:

Hi Kal, Go LPG, I have on my XJ6 and its great, made money
back in 9 months, as I use it every day.
I had my conversion done in south Wales, by Profess Autogas
for �600. (Carb, version, but injection costs around �1200).
With LPG currently at about 50p a litre at forcourt, or
about 44p at private sellers, it virtually halves your fuel
bill!
John.–
The original message included these comments:

alternativly … how good are these gas conversions? and
where to get information about this in Swansea Wales?


Series 2 Sovereign - best looking XJ6 …EVER!
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KhalilK wrote:

hi,

has anyone done this or considered doing this …
heart transplant … ie Diesel engine out of the new xj into
the old … what should one consider before getting a
mechanic to do this.
will the suspension on the front need to be changed?
will the original gearbox work or need a gear box as well.

alternativly … how good are these gas conversions? and
where to get information about this in Swansea Wales?

its just that the car is great comfortable … mechanicaly
perfect but finding it on the thirsty side so was wondering
how to improve the fuel consuption. at the moment averaging
18.7mpg around town and 20/22 mpg motor way…

At least you are getting decent milage as is, Kal…

The diesel conversion is a major engine compartment revamp, requiring
all the diesel’s engine management systems and the gearbox as well. I’m
sure it can be made to fit, as a fun proposition, but as a practical way
of saving it’s dead in the water…:slight_smile:

Frank
xj6 85 Sov Europe (UK/NZ)===================================================
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In reply to a message from KhalilK sent Tue 20 Nov 2007:

FYI Kal, now that you’ve had a few opinions, you’d probably be best
taking this enquiry over to the correct list if you want more info.
That would be the X300 list.

Here we deal with cars of the Series 1,2 and 3 type, up to 1986
mostly, or 92 for V12s. Not that I’m aware of anyone over there who
has gone diesel, but there are some with LPG experience.

Pete–
66 2+2, 73 OTS, 76 DD6 Coup�, 85 XJS 5-spd conver, 93 XJ12
Cambridge, United Kingdom
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In reply to a message from KhalilK sent Tue 20 Nov 2007:

It helps to put you gas consumption into perpective when you
realise that the cruise liner, QE 2, moves only six inches for each
gallon of diesel that it burns.–
The original message included these comments:

perfect but finding it on the thirsty side so was wondering
how to improve the fuel consuption. at the moment averaging
18.7mpg around town and 20/22 mpg motor way…
thanx


Bob
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In reply to a message from Peddlarbob sent Wed 21 Nov 2007:

Ahem…Roberto di Peddlaro…

I daresay this must be ‘apocryphal’ or refer only to extreme
conditions at full steam ahead or something. At the rate of one
gallon per six inches, the old girl would need to carry over 31
million gallons of diesel for a 3000 mile journey…–
The original message included these comments:

It helps to put you gas consumption into perpective when you
realise that the cruise liner, QE 2, moves only six inches for each
gallon of diesel that it burns.


66 2+2, 73 OTS, 76 DD6 Coup�, 85 XJS 5-spd conver, 93 XJ12
Cambridge, United Kingdom
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In reply to a message from PeterCrespin sent Wed 21 Nov 2007:

Actually I just found conflicting information. The official QE2 web
site says that the engines have a consumption of 50ft per gallon
and the tank capacity is 4,560 ton of bunker C fuel which will last
for 12 days at a top speed of 28.5 knots. Just goes to prove you
should never trust those ‘‘did you know’’ claims made in magazines.–
The original message included these comments:

I daresay this must be ‘apocryphal’ or refer only to extreme
conditions at full steam ahead or something. At the rate of one
gallon per six inches, the old girl would need to carry over 31
million gallons of diesel for a 3000 mile journey…


Bob
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In reply to a message from PeterCrespin sent Wed 21 Nov 2007:

But, is not old girl QE2 in retirement or headed for it?

Or, do I have my queens mixed up?

Carl–
The original message included these comments:

I daresay this must be ‘apocryphal’ or refer only to extreme
conditions at full steam ahead or something. At the rate of one
gallon per six inches, the old girl would need to carry over 31
million gallons of diesel for a 3000 mile journey…


Carl Hutchins
Walnut Creek, California, United States
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In reply to a message from cadjag sent Wed 21 Nov 2007:

You have to be careful about that…–
The original message included these comments:

Or, do I have my queens mixed up?


Bob
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In reply to a message from PeterCrespin sent Wed 21 Nov 2007:

Actually I just found conflicting information. The official QE2 web
site says that the engines have a consumption of 50ft per gallon
and the tank capacity is 4,560 ton of bunker C fuel which will last
for 12 days at a top speed of 28.5 knots. Just goes to prove you
should never trust those ‘‘did you know’’ claims made in magazines.

G’day Bob,
The QE2 was originally built with steam turbine propulsion, fuel
consumption was then 36 feet to the gallon. This improved to about 50 ft per
gallon when she was ‘lumped’ with diseaseal - electric engines in 1986 at a
cost of 100 million pounds. The British loved holding on to old technology
after the world had moved on. e.g. steam express trains and XK engines.
regards,
John Hudson
Brisbane Australia
71 SI XJ6, 85 SIII XJ6----- Original Message -----
From: “Peddlarbob” peddlarbob@sympatico.ca
To: xj@jag-lovers.org
Sent: Thursday, November 22, 2007 3:19 AM
Subject: Re: [xj] implant Diesel engine into 1998 xj8 or gas conversion

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In reply to a message from John Hudson sent Wed 21 Nov 2007:

I seem to remember that the steam engines were replaced with
straight electric and diesel electric during the 1950’s in England.–
The original message included these comments:

cost of 100 million pounds. The British loved holding on to old technology
after the world had moved on. e.g. steam express trains and XK engines.
regards,


Bob
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In reply to a message from John Hudson sent Wed 21 Nov 2007:

I seem to remember that the steam engines were replaced with
straight electric and diesel electric during the 1950’s in England.
Bob

Sure, Bob, but the Yanks had diesels way before that.

http://www.pbs.org/wgbh/amex/streamliners/peopleevents/e_dawn.html

regards,
John Hudson
Brisbane Australia
71 SI XJ6, 85 SIII XJ6----- Original Message -----
From: “Peddlarbob” peddlarbob@sympatico.ca
To: xj@jag-lovers.org
Sent: Thursday, November 22, 2007 9:23 AM
Subject: Re: [xj] implant Diesel engine into 1998 xj8 or gas conversion

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In reply to a message from Peddlarbob sent Thu 22 Nov 2007:

No, old tech has it’s place.

About 20 years ago, The Day Light Special was btrought pout of
retirement. It was a state of the art steam engine. Temendous
power. It performed as well as better than the contemporary
diesels. Both a bit dirty, thiough., the steamer with clouds of
black and the diesel wit it’s share.

We junked our electric transit system in favor of diesel buses.
Never have got that strasightened out.
General Motors, Standard oil & Firestone. Hmmm,

Carl–
The original message included these comments:

I seem to remember that the steam engines were replaced with
straight electric and diesel electric during the 1950’s in England.


Carl Hutchins
Walnut Creek, California, United States
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Righto, the Zephyr was indeed great, but suffered from a couple of mundane
problems, like poor protection for the crew in a crash. Steam engines, except
the cab-forwards: http://www.steamlocomotive.com/cabforward/

could plow through Cheops pyramid before the crew noticed. Modern diesels
also have extended noses, or are run ‘backward’ by some railroads, just for
that reason.–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.

John Hudson wrote:

Sure, Bob, but the Yanks had diesels way before that.

http://www.pbs.org/wgbh/amex/streamliners/peopleevents/e_dawn.html

regards,
John Hudson Brisbane Australia
71 SI XJ6, 85 SIII XJ6

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John Hudson wrote:

The QE2 was originally built with steam turbine propulsion, fuel
consumption was then 36 feet to the gallon. This improved to about 50
ft per gallon when she was ‘lumped’ with diseaseal - electric engines
in 1986 at a cost of 100 million pounds.

I think that’s the ultimate in electric fans, John…Alex…:slight_smile:

Frank
xj6 85 Sov Europe (UK/NZ)===================================================
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Aw Frank, just wait 'til they convert her to a hovercraft, if you want to talk
fans.
;]
By the by, happened to see a picture of one Italian entry in the old seaplane
races that Supermarine used to win. It had no pontoons and just sat on the
water. But, cagey Italians, it had a marine screw at the rear as well as a
prop at the front, and hydrofoils where the wheels would be. You got the rear
prop going to get her up on the hydrofoils, then engaged the air propellor to
take off.

Any bets on what happened?
;]–
Alex
79xj6L SII (BRG + wires)
86xj6 SIII (Black)
61 Sprite MkII (Red)
Menlo Park, Calif.

Frank Andersen wrote:

I think that’s the ultimate in electric fans, John…Alex…:slight_smile:

Frank
xj6 85 Sov Europe (UK/NZ)

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Cannara wrote:

Aw Frank, just wait 'til they convert her to a hovercraft, if you want
to talk fans.
;]
By the by, happened to see a picture of one Italian entry in the old
seaplane races that Supermarine used to win. It had no pontoons and
just sat on the water. But, cagey Italians, it had a marine screw at
the rear as well as a prop at the front, and hydrofoils where the
wheels would be. You got the rear prop going to get her up on the
hydrofoils, then engaged the air propellor to take off.

Any bets on what happened?
;]

No, but with ideas like that it’s no wonder the Brits ultimately won the
Schneider Trophy, Alex…:slight_smile:

Frank
xj6 85 Sov Europe (UK/NZ)===================================================
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