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Old 10-08-2002, 17:18   #1 (permalink)
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BA LPG = low power - why?

I'm not sure if this has been discussed before (it's a little hard keeping up with all the BA threads...) but does anyone know why there is such a large power difference in the LPG and non-LPG BAs?

Also, why is there no LPG available on V8?
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Old 10-08-2002, 18:52   #2 (permalink)
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with LPG you will always lose power. but in the long run u save on Petrol.

The reason why ford doesnt have its V8s with EGAS is because they do not want they big motors losing power. The reason why you would buy a V8 is for its power.


hope that made sense and u know why.
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Old 10-08-2002, 20:33   #3 (permalink)
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you don't always lose power with LPG.... Generally only with dual fuel setups. LPG has different burning characteristics to petrol, so finding a "best" setup for each isn't usually possible..

LPG has a higher octane rating than petrol and with an engine built to run LPG you should make more power. You can run a higher compression ratio, and i think more ignition advance.

Anyway the eGAS engine is not just a converted 6. It's a 6 rebuilt with special parts designed specifically for LPG. This engine is not designed as a rocket, more so as a taxi/family car engine.

I suppose they didn't want to rebuild the 8 to take advantage of GAS... Personally I'd like to see them build a performance LPG car... Factory XR6T on straight LPG!
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Old 10-08-2002, 21:17   #4 (permalink)
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Hear Hear!

a few years ago Julian Edgar reviewed an ED Falcon with LPG Fuel Injection system, called Liquiphase. I'm very surprised Ford haven't developed a system like this, or at least licenced the Liquiphase system. On the ED, they were making 10kW more than the petrol motor at the wheels on a stock motor, as well as noting reduced running costs over the fumigated intake manifold design that Ford is currently using.

I'd like to see an XR6T with LPG injection. That would negate the need for an intercooler, since the latent heat of LPG will cool the intake charge significantly (Better Throttle Response!!!), it would be CHEAP to run, and the motor would last an awful lot longer...
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Old 10-08-2002, 21:20   #5 (permalink)
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I think zod351 has got it right - the LPG engine is designed to be very fuel efficient and give a long service life - basicaly for taxi's and fleet cars. So bu limiting the power output they ensure that.

I think in the future when they finaly get LPG injection systems working it will open the door to high performance applications. At the moment gas systems are fairly crude which means they need to run on the rich side in a hi-po application.
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