525 Touring LPG installation pics

[shogun]

Engine: M50B25
LPG unit produced by Prins

http://public.fh-wolfenbuettel.de/~k...von_rechts.jpg
http://public.fh-wolfenbuettel.de/~k...r_von_oben.jpg
Kehin Injektor under inlet manifold
http://public.fh-wolfenbuettel.de/~k...nbau/Kehin.jpg
LPG STAKO tank
http://public.fh-wolfenbuettel.de/~k...Kofferraum.jpg
ACME fuel lid
http://public.fh-wolfenbuettel.de/~k..._Anschluss.jpg
selection switch fuel-LPG at phone console
http://public.fh-wolfenbuettel.de/~k...Umschalter.jpg
Price including installation EURO 2.500
LPG tank has 40 Ltr. capacity, but will changed to 55 Liter.

[Badkrma]

I would like to know what kind of milage it gets and cost differance for fuels.

[granit_silber]

I would like to know what kind of milage it gets and cost differance for fuels.

I wouldn't mind having him make my engine bay look that clean!
-ashley

[Lennyz525i]

How does it affect performance?

[Interceptor]

How does it affect performance?

Since this is a crappy LPG installation (only one injector in the intake manifold instead of one for every cylinder) one might expect up to 10-15% less HP and 10-15% less MPG. The only real benefit is the price of liquified petroleum gas as opposed to gasoline. Here, gasoline is 2.5x more expensive than LPG.

[SRR2]

Interesting point. Injecting the gas in the vicinity of the throttle body will necessarily displace combustion air. Injecting gasoline at the valve doesn't displace anything I imagine since it evaporates on the way into the cylinder. What's the stoichiometric ratio of LNG fuel to air? That will probably give a pretty good estimate of the reduction in available power, due solely to air displacement. Seems to me that to do this right, the gas would have to be injected just like gasoline -- under high pressure, right in front of the valves.

[bighc2000]

I wonder how it would compare to the 518g Touring p0rduced by BMW? The g ran on both gas and cng.

[shogun]

That is quite popular in Europe because of the big difference in prices. Even 750 V12 are converted to LPG.
Here is some info
http://www.autogas-forum.de/links/links-e.htm
http://www.lpg-vehicles.co.uk/lpg_ne...uels_forum.htm

[Interceptor]

That is quite popular in Europe because of the big difference in prices. Even 750 V12 are converted to LPG.
Here is some info
http://www.autogas-forum.de/links/links-e.htm
http://www.lpg-vehicles.co.uk/lpg_ne...uels_forum.htm

The bigger the engine, higher the probability that one of the owners will convert it to LPG as the car gets older (and cheaper).

[jplacson]

is the 518g engine a direct bolt-on for all E34s?

I wonder how difficult a conversion would be to use this engine...