Best LPG Conversion for a Porsche Cayenne 4.5 V8 ?

Best LPG Conversion for a Porsche Cayenne 4.5 V8 ?

Author
Discussion

Pexseven

Original Poster:

7 posts

159 months

Thursday 7th April 2011
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Anyone got Thoughts on Which LPG System would be Best to have fitted on my Porsche Cayenne S 4.5 V8 ?
Only i have had a few quotes from LPG Specialists, but they all have different opinions on which is the most suitable system to Install !!

Richard Hamilton

523 posts

261 months

Thursday 7th April 2011
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Talk to Hilton Autogas. http://www.hiltonautogas.co.uk/. You won't find anyone better.

thegoose

8,075 posts

210 months

Friday 8th April 2011
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Do a forum search for "LPG Cayenne" and you'll probably find the guy who's had this done. It was important to have an installation that includes Flashlube.

VonSenger

2,465 posts

189 months

Monday 11th April 2011
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thegoose said:
Do a forum search for "LPG Cayenne" and you'll probably find the guy who's had this done. It was important to have an installation that includes Flashlube.
Yep, that would be me. Flash lube apparantly stops the valves from frying, however it uses alot of it!! cant remember where i had it done, somewhere in surrey. Its also a PIA trying to find places that sell lpg, ive just come back from eurodisney and it was available at every station, but not in rip off britain it seems!!

DH01

820 posts

168 months

Monday 11th April 2011
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VS,
what sort of MPG do you get or can you give us an idea of the running costs ?

I've never really considered the idea but as we head towards £1.50 a litre. . .

VonSenger

2,465 posts

189 months

Monday 11th April 2011
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I have an 90 litre tank, aprox £55 to fill. Urban 200 miles, motorway sensible speed 350 miles prob 380. Certainly paid for itself over the 35k miles since install. What a machine the car is, this weekend we done a 500 mile round trip, 2 kids and 2 adults in offortless comfort for 70 odd quid!

thegoose

8,075 posts

210 months

Monday 11th April 2011
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There is a free download for TomTom's giving locations of LPG stations, which may help. I haven't found it too much trouble - my Dodge Ram (5.7 litre cool) runs on it with a 230 litre tank (390 miles best result, but can only put 170 litres when empty and I was towing 2 tonnes).

steve singh

3,995 posts

173 months

Monday 11th April 2011
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I'm still trying to get my head around the logic of buying a 4.5 V8 and then putting an LPG conversion on it...

thegoose

8,075 posts

210 months

Monday 11th April 2011
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steve singh said:
I'm still trying to get my head around the logic of buying a 4.5 V8 and then putting an LPG conversion on it...
Why? Logic says it's a great idea if you're doing enough miles, maybe it's emotion that's harder to get your head/heart around?

steve singh

3,995 posts

173 months

Monday 11th April 2011
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thegoose said:
steve singh said:
I'm still trying to get my head around the logic of buying a 4.5 V8 and then putting an LPG conversion on it...
Why? Logic says it's a great idea if you're doing enough miles, maybe it's emotion that's harder to get your head/heart around?
I guess I'm assuming that the performance drop off will be noticeable...which it might not be...

VonSenger

2,465 posts

189 months

Monday 11th April 2011
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steve singh said:
I guess I'm assuming that the performance drop off will be noticeable...which it might not be...
A? performance drop off in a Cayenne, are you serious? There is a very very small drop, but honestly if you are concerned about performance dont buy a 2 ton 4x4, get a gt3 or similar. If you want effortless, reliable cheapish comfort, its a no brainer. I have the desmo and r8 for frills, Cayenne is for lugging the kids around not hooning.

jonah35

3,940 posts

157 months

Monday 11th April 2011
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even with lpg £55 to do 200 miles seems extortionate to me!


Prince Jefri

1,971 posts

169 months

Monday 11th April 2011
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steve singh said:
I'm still trying to get my head around the logic of buying a 4.5 V8 and then putting an LPG conversion on it...
Where to start!!

errrr.......wanting a big engined, powerful 4x4 (ie - A Cayenne!) and space but not wanting 14mpg at £1.40 a Litre! He want's to pay £0.75 a litre insead. His "logic" is that he can have a Cayenne but get the equivilant of 28mpg.

I like you ever so confused question......frankly, if you can't see this; I give up.

DanH

12,287 posts

260 months

Tuesday 12th April 2011
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VonSenger said:
A? performance drop off in a Cayenne, are you serious? There is a very very small drop, but honestly if you are concerned about performance dont buy a 2 ton 4x4, get a gt3 or similar. If you want effortless, reliable cheapish comfort, its a no brainer. I have the desmo and r8 for frills, Cayenne is for lugging the kids around not hooning.
My Cayenne performs very well thank you!

911Thrasher

2,573 posts

199 months

Tuesday 12th April 2011
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steve singh said:
I'm still trying to get my head around the logic of buying a 4.5 V8 and then putting an LPG conversion on it...
+1

Surely if you can afford a Cayenne S you can afford the fuel for it? No? The couple cents you will save on a daily basis shouldn't really matter...unless you are a taxi driver and drive hundreds of miles.

Edited by 911Thrasher on Tuesday 12th April 09:18

VonSenger

2,465 posts

189 months

Tuesday 12th April 2011
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911Thrasher said:
+1

Surely if you casn aford a cayenne S you can afford the fuel for it? No?
oh here we go, willy waving time. Yes thanks, you?

Whats worse buying a cayenne and not being a mug or p155ing my money up the wall?

Let me know if you want to compare assets and wealth, happy to do so.

Sunnysidebb

1,373 posts

167 months

Tuesday 12th April 2011
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I wonder if we can trust the government to keep the Tax low on LPG??
I think LPG has seen its prime and if the tax goes up on it I dont think it would be worth the effort.
Electric is the new LPG IMO with the government.
Frank

VonSenger

2,465 posts

189 months

Tuesday 12th April 2011
quotequote all
Sunnysidebb said:
I wonder if we can trust the government to keep the Tax low on LPG??
I think LPG has seen its prime and if the tax goes up on it I dont think it would be worth the effort.
Electric is the new LPG IMO with the government.
Frank
I think you are right. I give it 3 years max before cam cranks the tax handle.

JW911

890 posts

195 months

Tuesday 12th April 2011
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EU legislation restricts the tax rate on LPG so it will always come in significantly less than petrol or diesel and HMG will get little say in the matter (unless the EU changes it's mind of course). It's sold as a "green" fuel and as far as the government is concerned, "green is good and should be encouraged" so it will stay noticeably cheaper for some time yet.

As far as "if you can afford a Cayenne, you can afford the fuel" goes, I can afford a V8 Range Rover and a 911 Turbo but I'm not stupid enough to pay through the nose when I don't have to. wink

steve singh

3,995 posts

173 months

Tuesday 12th April 2011
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Just seems strange to buy a huge 4x4 and then worry about the running cost - if that is the primary motivator there are probably more suitable alternatives which would also cost a lot less to maintain/run outside of fuel?

Personally I'd be a tad self-conscious driving around in a Porsche Cayenne with two filler caps as it would just feel so pretentious - not having a go but just explaining my earlier comment.

Anyhow life is about opinions and different outlooks - thinking one view is the only view is narrow minded, so I'm sure everyone who has done an LPG conversion on a 4x4 has valid reasons.

Edited by steve singh on Tuesday 12th April 09:44