LPG Legnum?

[Requested]

Hi there, does anybody have an LPG converted Legnum? The new vapour injection system means a less decrease in power than convential lpg systems and think of the savings one could have. Also for those like myself in WA, we get a 3k rebate so it would probably cost just over a grand for a good system. What do you guys think?

 

[Guest]

Personally I would just spend the money on a haltech and lean out the fuel, think of the power gain and fuel savings

VR4 on LPG just doesn't sound right

 

[Guest]

There are at least 3 in the UK and quite a few Legacy turbo's running LPG as well. I have heard there are also some liquid injection systems around as well but there have been problems with the injectors with those ones. A flashlube kit would be a must if you go down that route. What manufacturers do you have in Oz. The good systems available in the UK are by Prinz and BRC

 

[Requested]

Hi Peter, Im not sure what systems we have in Aus. I just got two quotes one was $3500 (lady didnt really know what legnum was and I didnt mention anything about turbos) and $5k when I told this lad it was v6 2.5L turbo

 

[Guest]

5k is a bit more than a good UK kit but unless they have worked on turbos I would carry on looking to find somebody with experience.

 

[Madhav]

$1k outlay for us WA blokes sounds reasonable, check up on whether it will effect the engine though in anyway. If not, then this is great. What sort of fuel savings does one get? As in now it costs around $75 for a 50L tank which lasts me around 350-400 km, what sort of economy would gas give?

 

[minik1971]

What about the boot space you will lose? I assume the tank would go in the wagon space? Just a thought

 

[VR4Rocket]

I remember seeing on a Mod my Ride a while back they put in some "Natural gas from some plant extract" into a Plymouth or similar and then took it to the track and destroyed a Lamborghini.......when are we gonna get something like that?

 

[Guest]

gas is more powerful that petrol its just that the converted cars have shit systems and are not tuned properly just for gas. the strait gas cars have heaps more go that just a normal petrol car.
there is a guy in Melbourne that has a for XD with strait 6 turbo on gas, he runs it at heathcote and gets 9sec passes, this thing could not even do a burn out on drag slicks then the thing took off with the front end in the air.lol i couldn't believe my eyes..

 

[Guest]

lpg has a higher octane rating, its just the duel fuel setups are 'somewhat' tuned for both, so you will lose power over straight petrol.

i'm actually about to investigate it a bit further, my ex gf had a quote of $4,500 to put her stagea on gas, but sold it and is about to put her ba ute on gas instead.i'm pretty sure they make gas tanks now that fit in the spare tyre well, which is what i'd be looking at.

will let you all know how it goes if i get around to it.

 

[Guest]

I remember seeing on a Mod my Ride a while back they put in some "Natural gas from some plant extract" into a Plymouth or similar and then took it to the track and destroyed a Lamborghini.......when are we gonna get something like that?

I think you are refering to the bio diesel 7L gmc transplant the Pimp My Ride Guys did for Arnold Schwarzenegger.

http://www.mtv.com/thinkmtv/features/environment/pimp_my_green_ride/

Gas powered turbo cars are able to hold higher compression and boost but is the engine able to hold the extra pressure.

Mitch you are right you would be able to get whats called "scuba" tanks that fit into a good sized tyre well.

 

[Requested]

Peter the 5k guy said he converts turbo skylines to gas which is good but probably a bit too expensive.

Madhav. any idea where I can find out adverse effects on the engine? I'm not sure what type of ?L/100km LPG would do. May have to chase up those uk gas legnums for some data. All I can guess is that it would be cheaper than what you get.

Minik, the gas tank replaces the spare tyre and you are meant to have the spare tyre in the wagon compartment to keep legality intact. I'm cool with that. The 3.5K people said that they mount the spare tyre in the wagon bit.


yeah LPG is a much higher octane than unleaded. A friend on the soarer forum converted his V8 to gas (a good system, i think vapour injection at a guess) and dyno before and after. His after dyno put out higher rwkw by a lil bit. Thats not turbo though.
Mitchy you have got me thinking about a just gas setup so its tuned just for gas and goes hard. That would be awesome. When I called one of them said that they could get a tank to fit. Maybe she just quoted me a magna setup but I did the whole "No not Magna! L for Loser, E for Enourmous, G for Good etc to spell Legnum for her. I will only get one in the spare tyre as I need my cargo room.
I am very interested in your progress, keep me updated please! I think its great for us in WA with a 3k rebate. Anything that helps me drive my car more gets my approval because with petrol prices my soarer has become like a show car that only I see...in the garage. I want my legnum to be my daily and do heaps of k's with work and uni.

 

[SiliconAngel]

AFAIK LPG has less potential energy (thus the higher octane) than petrolium, thus you'll use about 30% more for the same result. Not that I've researched this extensively... just what I've heard from people with LPG conversions and mechs

 

[Guest]

Most of the power loss and higher gas usage is solved with the direct injection gas systems. You would only get a 10% loss in power.

 

[Guest]

you will use more litres per 100km, but you also pay a fair bit less per litre, so it still works out beneficial.

and yeah the direct injection gas is a far superior system, going a lpg only setup should give you a slight power increase.

 

[Guest]

BLASPHEMY!!!!!!!!

 

[Mortz]

If you go a full LPG system you'd better live in a decent sized city to make sure you can find a servo with gas. A lot of smaller servos don't even sell 98 octane fuel, let alone LPG. People in capital cities and larger towns/cities would be alright, but might be hard to track down in rural areas. When you're on a trip or something (especially country) and need some fuel it can be a pain in the arse to track down 98 octane, let alone LPG.

 

[Guest]

its hard enough to find a "98 octane" that actually is 98 octane where i live, i have been getting more kms and less splutter out of the 10%ethanol fules than out of any 98 octane fule

 

[jungle]

Friend of a friend has recently changed over to the new vapur system. The computer he uses is a piggy back. It works by receiving the signal from the cars ecu for injection pulse length, it know's how big the standard injectors are and fires' its gas injectors for X time to get the required LPG into the cylinder. it's pretty goochy. Comes in either 4,6 or 8 cylinder examples.

Apparently its pretty darn good.

 

[matchtheclown]

I remember a while ago seeing a website to a sydney mob who specialised in peformance LPG conversions. Promising the same or more power after the LPG was installed. I'm sure they tune the car as well which would explain it. I have thought about it.

A well tuned LPG vechile will run as well as a petrol one these days it seems.