Thread: LPG injection to a 1994 RR classic 3.9

Yes. The KME system has been installed on 3.9 RR. I have the same one on my P38A which doesn't have O2 sensors.

See KME - Manufacturer of CNG and LPG (GPL) electronic systems. I think ELKO distribute it. ELKO are in Dandenong and Lilydale.

Mine was done by Diesel Gas Technologies in Sydney and I've seen several 3.9 RRCs with this system in their workshop.

I had a 93 witha 3.9 and later a 4.6 motor and fitted simple gas system with a aftermarket O2 sensor.
I had 2 tanks in place of fuel tank and also on another car had 3 tanks fitted in back of car. Much of a muchness.
Never had a problem and got consistently 250-300km/ 58L gas.

Give Bee utey a pm, he did all my conversions(4 of them) and is resident guru.

You can fit gas injection to a 94 RRC. You don't need O2 sensors but one helps for diagnosis. You also don't need a MAP sensor. The gas system has its own. However the gas will not self-tune without an O2 sensor enabled to the car ECU. So it will probably wander off tune every so often and need tuning via laptop and adaptor.

However a well sorted mixer system will cost you $1500 less, offer self tuning when connected to an O2 sensor and give 98% the same reliability and 90% of the peak power. Mainly its less parts to go wrong and ease of servicing that wins a mixer system for me on a RRC.

Thanks for the replies. I will give ELKO a call and see if they can put me onto an installer.