LPG gas - good for performance?

[doctorchee]

Dear All

Wouldl just like to check is LPG gas system good for performance?

eg around 600hp?

In Thailand, I was told that they have injection system for LPG gas. Its 105 octance compare to the 95 octance fuel avaiable here.

So in short, I was told its better.

Can anyone advise the comparison between LPG gas and 95fuel?

Thank you.

RegardsDerrick

[ultrapulse]

Apparently yes. I nearly ran my last serious toy on LPG for something a little different. Yes the octane rating is increased but dont know about real hp output as I never went that way in the end. Would be keen to hear the outcome though.

[Nyloc]

No. While LPG IS higher octane, allowing higher compression or boost for more power, it has roughly 20% less actual energy value (calorific or BTU), thus lowering actual engine power output. Therefore LPG is roughly 20% less powerful than the same engine running on petrol/gasoline, resulting in 20% greater fuel consumption for the same distance travelled(because a bigger throttle opening is required for the same power) and reduced power at WOT.

However the cost difference for LPG in most cases is far more than 20%, resulting in a net saving of $$, and if the higher octane rating can be utilised by higher compression, advanced timing or boost, the power loss can be minimised. To make more power than petrol simply because of the octane is very difficult, even factory produced LPG dedicated vehicles cannot match the petrol equivilant. LPG is for the economy minded and high mileage vehicles like taxis, and also less enviromentally damaging. For that matter, an engine running on LPG will remain cleaner too, think 30,000km oil changes without the oil even looking dirty.

[doctorchee]

Thank you so much.