LPG convertor - best position/orientation in engine bay?

[Mark2]

I'm in the process of fitting a 2nd hand gas system and have a question re the orientattion of the convertor in the engine bay. Its an older style Landi-Hartog convertor.

Should it be as high as possible or as low as possible or doesnt it matter? (I vaguely recall hearing there can be issues with coolant air bubbles or something)?

and,

Does the convertor have to be placed so the diapragm is running north/south or does it not matter? (Have heard that if the diaphragm faces east/west it can be affected on acceleration)

Thanks

[Loanrangie]

Depends on the vehicle where the best location is, in my rangie i used 2 different systems, an impco converter that was mounted on the inner guard with the diaphram horizontal and a LP converter mounted vertical. Both never had any probs and they were mounted higher than the rad which is meant to be a no no, most will say the lower the better to avoid air locks and freezing.

[PGS 4WD]

If you bleed the cooling system properly there is no issue with having the converter higher, in fact if the car looses its water the converter will freeze and stop the vehicle hopefully before engine damage occurs. Complex converters (OMVL, Landi, Vialli, BRC etc) generally need to be mounted vertically with the vapout outlet at the bottom so oils dont build up and cause issues. My opinion and others may disagree but simple converters (Impco, OHG, B2 etc) should be mounted horizontally so oils dont build up un the secondary diaphram as this causes the diaphram to deteriorate and sometime go stiff when cold causing hard start and poor running when cold, flat spots etc.

Joel