I have been thinking about this for a while now and cant find any cdecisive answer..........so,

Does anyone know what qualification you need to do to become a qualified fitter of automotive LPG systems?

You need to be approved by the LPGA, do a mickey mouse 3/4 day course on the equipment you intend to fit and bob's your uncle!

Davie

More cowboys in the LPG business than in Blazing Saddles. A guy I knew from my motor trade days is now in the lpg conversion business --- hmm.

Some of the LPG kit around is pretty suspect, if you pick the wrong supplier and you end spending a lot of time trying to sort out conversions that go wrong as a result a lot of LPG fitting outfits don't last long.

[Edited on 20/5/08 by britishtrident]

Hmmmm... I wonder?

Right - I've been harping on in another thread about the potential difficulties in supercharging my V8 engine that runs a stock 11.0:1 CR.

Hypothetically speaking - would setting this engine PROPERLY to run EXCLUSIVELY on LPG be the solution?

Perhaps naively, I'm thinking that the high-octane LPG would not only be a solution, but would potentially provide better efficuiency / performance.

Anyone want to knock me off my nirvana like perch?

I've been reading up a bit on LPG since my parents bought a dual-fuel Astra recently.

Though LPG has a higher octane rating (110 or more), because most systems inject it as a vapour rather than a liquid you don't get the cooling effect that petrol gives. This is hard on pistons and valves on an engine with forced induction. Vapour injection also limits the amount of fuel you can physically inject because of it's volume.

Liquid injection systems are now available (e.g. Icom JTG), and these are a better bet for performance applications, and can actualy improve performance due to the large cooling effect of the LPG evaporating. These systems are also capable of running as a single fuel, the vapour systems usually need to start on petrol to get the engine coolant hot enough for the gas vaporiser. Predictably liquid injection LPG systems are more complex and expensive than vapour systems.

How heavy are the tanks?

190 bhp seems to be the top limit on 4 cylinder kits, a lot of more recent Range Rover V8 conversions are apparently running two four cylinder sequential kits to flow enough gas.


Some kit will provide mixed gas and petrol fuel when flat out.

[Edited on 24/5/08 by britishtrident]