LPG conversion on a Cayenne....anyone done it?

LPG conversion on a Cayenne....anyone done it?

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Ranger 6

7,040 posts

248 months

Wednesday 10th September 2008
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Fulla

450 posts

214 months

Wednesday 10th September 2008
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Ash 996 GT2 said:
No problem if you want to stuff the heads, valves and amy moving part.

LPG is ok in a low cost car, I have it on my Vectra however, all the above has gone on mine.

LPG does not have the normal lubricants and cleaning properties of normal fuel.

My advice, DO NOT DO IT.
Not sure when you had yours done but you can now get them with lub kits so the dry LPG doesn't damage the engine. You are also advised to run on petrol every so often.
Had my Range Rover with the BMW 4.4 engine done and it's now saving me bundles. Petrol - ave 16mpg £1.14, LPG - ave 14mpg 59p!

Ranger 6

7,040 posts

248 months

Wednesday 10th September 2008
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Ranger 6 said:
a friend is looking at the possibility of converting his Cayenne Turbo to take lpg....
This would be his third or fourth lpg converted car so he's happy with the principle.

8thumpers

2 posts

210 months

Sunday 21st September 2008
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LPG storage for heating is in tanks which have the feed off the top - the heaters use the gas. LPG for car fuel is drawn from the bottom of the tank in liquid form - so a completely different storage tank is required.
You cant get around the fuel duty between the two types of tank - unless you have both tanks and a friendly tanker driver!
It is cheaper to buy in bulk although there is a rental charge for the tank so you need to use a lot to make it worthwhile.

HARVARD

2 posts

182 months

Wednesday 21st January 2009
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I tried to get my 2004 Porsche Cayenne turbo converted to LPG at greenfuel company in Bath cos i am fed up of only getting 11mpg!!!! They said they done a few cayenne S and after 8 days they gave up stating not enough room under bonnet/wheel arches due to the 2 turbos/intercoolers!!

Porsche GB also advises not to convert stating the car is designed to run on Super unleded or unleaded only due to the massive performance!

I think its ok to convert other less performance cars but only time will tell if engine wear occures!

I guess if we want to buy cars with massive performance that 4 years ago were £77k but now only 20K we still have to pay through the nose for petrol/maintanence. The lesson is buying the car is the easy bit, running it is another matter!

Edited by HARVARD on Wednesday 21st January 11:57

Fulla

450 posts

214 months

Wednesday 21st January 2009
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johnny senna said:
LPG conversion on a Cayenne....anyone done it? Just wondering. Lotta car for 20K. Just needs cheaper fuel costs.
www.tassoautogas.co.uk
Give the above guy's a call. They are in West London and run a converted Cayenne. They did my RR a several months ago and I am very happy. I was advised to run on petrol for a few miles after every tank of LPG. Conversion was under 2k which was well worth it.
If your worried about LPG not lubricating the internals you can get a lubricant injector which they will happily fit for you.
For me was a nobraininer, cheaper fuel, cheaper running costs, lower tax, free congestion charge,no noticable power difference.

All the best - Fulla.

thegoose

8,075 posts

209 months

Wednesday 21st January 2009
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Fulla said:
...For me was a nobraininer, cheaper fuel, cheaper running costs, lower tax, free congestion charge,no noticable power difference.
What did you have to do to qualify for the free congestion charge? Is there some sort of official test/certification process?

Fulla

450 posts

214 months

Wednesday 21st January 2009
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thegoose said:
Fulla said:
...For me was a nobraininer, cheaper fuel, cheaper running costs, lower tax, free congestion charge,no noticable power difference.
What did you have to do to qualify for the free congestion charge? Is there some sort of official test/certification process?
The car needs to be on the Powershift register. You can apply for it to be added. Couldn't see any Porsche's on there yet.....


HARVARD

2 posts

182 months

Monday 2nd February 2009
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Ranger 6 said:
Ranger 6 said:
a friend is looking at the possibility of converting his Cayenne Turbo to take lpg....
This would be his third or fourth lpg converted car so he's happy with the principle.
Did your mate get his Cayenne Turbo lpg and if so where when how much how many miles has he done and has he had any problems?

Im still trying to do the same!

968CSReading

3,029 posts

217 months

Monday 2nd February 2009
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HARVARD said:
Ranger 6 said:
Ranger 6 said:
a friend is looking at the possibility of converting his Cayenne Turbo to take lpg....
This would be his third or fourth lpg converted car so he's happy with the principle.
Did your mate get his Cayenne Turbo lpg and if so where when how much how many miles has he done and has he had any problems?

Im still trying to do the same!
You need to buy a copy of this month 911 & Porsche world. Features an LPG converted Cayenne S and 944. Has all the details in there

JW911

884 posts

194 months

Monday 2nd February 2009
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Be aware that one of the biggest practical differences between the Cayenne and the Range Rover is the amount of space available to fit the tank - usually in the spare wheel well. When you are told you are getting a 70 litre tank, what you are actually getting is around 55 litres of useable fuel. You will find that you will end up with a range on LPG of not much more than 150 miles. The Range Rover takes a 95 litre tank (about 75 litres useable) and has a range of around 260 miles. You don't need a bigger tank in a RR but if you want a bigger one in a Cayenne, you will lose part of your boot.

Fulla

450 posts

214 months

Monday 2nd February 2009
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JW911 said:
Be aware that one of the biggest practical differences between the Cayenne and the Range Rover is the amount of space available to fit the tank - usually in the spare wheel well. When you are told you are getting a 70 litre tank, what you are actually getting is around 55 litres of useable fuel. You will find that you will end up with a range on LPG of not much more than 150 miles. The Range Rover takes a 95 litre tank (about 75 litres useable) and has a range of around 260 miles. You don't need a bigger tank in a RR but if you want a bigger one in a Cayenne, you will lose part of your boot.
I have the spare wheel tank. It only takes 63-65 litres of LPG and I get about 230 on a motorway run and around 175ish around town.

JW911

884 posts

194 months

Monday 2nd February 2009
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That's definitely an improvement over the ones I heard about (although one was certainly a Turbo so no doubt did 8mpg or something)!biggrin

Ranger 6

7,040 posts

248 months

Monday 9th February 2009
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HARVARD said:
Ranger 6 said:
a friend is looking at the possibility of converting his Cayenne Turbo to take lpg....
Did your mate get his Cayenne Turbo lpg and if so where when how much how many miles has he done and has he had any problems?

Im still trying to do the same!
AFAIK he hasn't done it yet.

turboman786

1,052 posts

186 months

Tuesday 24th November 2009
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So has anyone succesfully managed to convert a Cayenne Turbo to LPG?.....

The tank issues could easily overcome if you are willing to sacrifice the boot space (ie 70 litre LPG tank cylinder in boot, will take up half the boot), but dont know about the logistics of the rest of the conversion...

Would definitely conisder getting one converted, as the turbos represent awesome value for money, and are a pretty awesome car too!

GC8

19,910 posts

189 months

Tuesday 24th November 2009
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DucatiGary said:
thegoose said:
instal a big storage tank at home
not sure the taxman would approve of that.

but

if your friendly with your local farmer chances are they have a mass of LPG used for heating in the chicken runs etc.

apparently they are really cheap and some already have the nozzle thingy, apparently wink
My father had a tank installed for his Jaguar and RR: its a common installation and I can assure you that the 'taxman' will welcome it. From memory the outlet/connection dictates your duty rate. Big white Color tank to central heating boiler = no duty, whereas big white Calor tank to autogas filler = duty. Because of this you will need two tanks if you already have a tank from Calor for your domestic gas; although who is to know if you have a filler installed on the system as a barrow job?

VonSenger

2,465 posts

188 months

Tuesday 24th November 2009
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getting my Cayenne S done next week, will let you know.

majordad

3,600 posts

196 months

Monday 7th December 2009
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Well, how did it go ?

Richard Hamilton

523 posts

260 months

Monday 7th December 2009
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My brother has had his Cayenne Turbo converted to LPG, and has done about 20,000 miles since the conversion. Works fine, although the limiting factor to the output is the size of the injectors. He's in the process of having larger ones fitted to get the full power output when running on gas. If you want me to put you in touch, drop me a PM with your email address.

Ranger 6

7,040 posts

248 months

Monday 7th December 2009
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Thanks Richard, I'll get in touch with him and see if he's still thinking of this.