LPG !!!!
 

ok, this might go against the grain with some but please ingulge me..... anyone converted their WRX to LPG or know anyone who has....? Any info, how is/was it etc...?

Ta

Moogis

Cancel that....found answers elsewhere here!!! ta.

why would you

Moogis,

Can you let meknow where you found the info?

I would like to read thats all.

Cheers.

I'd take a stab that the car is used for the daily commute and the owner wants to save some money. LPG could be used for tha daily trawl through traffic and then the car could be used as normal on unleaded at "weekends".

It's an alternative to buying a different car I suppose.

I wouldn't actually do it myself unless I was going to run something like a V8 Range Rover or similar.

110 octane is one reason. If you had a petrol map and an LPG map you'd be away...

Just be prepared when it kills ya turbo!

Rob

Why would it kill your turbo??

As long as its mapped properly (which should go without saying..).. ?

Octane is higher, but calorific value is lower on LPG.......hence the lower power output (generally) on most converted cars.

Can Turbo and Supercharged engines be converted?

Yes they can, and very well if the job is done properly.
BUT! If the correct type of conversion equipment is not used the vehicle could be extremely dangerous..........

Open and Closed Loop single inductive mixer equipment is NOT suitable for the Conversion of any Turbocharged or Supercharged engine.

Read thorugh the description of both Open and Closed loop single mixer conversions to understand backfiring and is causes, then multiply the effect by the power of at least 6 for the gas capacity of the inside of the Supercharger, then you'll see why such an event would be very memorable indeed.

We are not speaking of a friendly little pop now and again, more like an eventual (ineviatable) explosion of large enough magnitude to take the Bonnet (and maybe even the Driver) with it.

That isn't the only risk either - Putting LPG vapour through a Supercharger will tend to dry out any lubricant in the rotor bearings which will end in Supercharger seizure sometime down the line. If such siezure does occur, it might just result in the snapping of the drive belt and a hefty bill for a new Supercharger unit. It could also result in a bill for a new engine if any broken Supercharger fragments are inducted.

For clarity, the only way a Turbocharged or Supercharged engine can be converted properly (safely) is by using correctly selected and installed multi point injection.

Copied and pasted by the way......not me!! lol ;)

You'd need bigger injectors, since it has to shift more of the stuff for the same power. A lube kit would solve the problems of drying-out the upper-cylinder or turbo areas. There probably isn't much experience of mapping for high power on LPG, but the overall mapping strategy is probably the same.

The main downside is that the price of LPG is low mainly due to a different tax setup, and that could change if many people started to use it....

Oh hang on.........read the second post!!! LOL

and............sleep :sleep:

Steve Cotton at Cotton Competition (Cotcomp Home) has recently done an LPG conversion on a newage wagon including the mapping - with very good results. (LPG giving higher results than the Optimax when the owner had it on the dyno). I believe he had to source a carefully selected kit from abroad as there was noone in UK that had developed one for the impreza.

Give him a call if you want to know the full details.

have a look at this:

RS gone for its LPG fit - UK Legacy Forums

Speak to Phil Price (who runs a Rally School) all his cars run on LPG including his Scooby Rally car.
He also fits them for a cost just under £2000 he told me last Saturday.
I picked a leaflet up , he has been doing them for
6 years on various cars.

His Instructer ran a Scooby on gas, he said that there is a wrong and right wait to do it, so be sure you get an expert, or you will loose power.

Apparently the govt. can only increase duty on LPG at the same time as doing on petrol and diesel, and to the same percentages, so prices pretty safe, and will remain 50% cheaper than petrol.

I was very impressed driving the cars last weekend.

There are some modern engines that suffer from major valve and valve seat problems after some time, often around 60,000 miles, after LPG conversion. This includes some Hondas, Vauxhalls and Fords but I didn't see Subarus listed. On these "chocolate engines" many garages fit an upper cylinder lubrication system called "Flash Lube" to help, although this product itself does not come with any form of mileage guarantee that I can see.

Conversion is popular with Mondeo driving high mileage cabbies for obvious reasons. I considered it for my old Jag' as driving the equivalent of a 50 mpg Jaguar was tempting but I couldn't justify the cost given the few miles I did.

Choose carefully and ask what guarantees are given. dl