Thread: LPG injection

I like the KISS principle when it comes to tanks.

Fortunately I dont get to see to many problems when it comes to LPG, I tend to hide under the "not authorised, not touching" concept when it comes to the tanks.

That said, some of the systems have injectors on them that make twitchy's v8 sound like a swiss watch the 2 worst ones I've heard were unmarked units from "an ebay seller" and I've had an instance with a twin tank install wasn't making full range or full use of all the gas we had a couple of guesses as to why but at the end of the day sent it back down to the installer to sort out and he didn't want to be forth coming with why it didn't work properly.

Hi Richard
I really can't get excited about cheapie injection kits. While they are able to be fitted there is little benefit over a well sorted mixer system. More expensive (read: sold here from a dealer) have parts back-up in case of warranty concerns. That is why I only use one brand, locally sourced, because I can drop in there any week day and get prompt assistance. Worth its weight in gold. And also the ECU in the RRC just isn't flexible enough to make the best of gas injection. You would have to upgrade to O2 sensors like Pibby did to get adequate mixture control.

As far as noise is concerned, most LPG injectors tick a little, and if you are running group firing engines on injection, they are more likely to annoy you. The pressure pulses make the converter knock as well.

The in-the-rear conversion uses a manifold tank from a Ford station wagon, this is one tank of 3 cylinders welded together, and holds 59-60 litres. The tank is about 200mm high and its stats can be seen at http://www.apamfg.com.au/Downloads/p...dimensions.pdf

.Gas Performance Upgrades

Contact and ask them how are they going with the gas injection.

Davis Performance Landys is working on the implementation of the liquid gas injection system which will result in even better performance and fuel consumption.

I had a marelli system fitted to my D1. Being the D1 it had banked injection. With the bonnet up you could hear the solenoids ticking a little bit, but with bonnet down not really noticeable.

The system worked very well and I had no issues with warranty claim on the mixer when a spring or something broke.

Looking at the pictures on the deacon auto web page of the install it is an involved job and one I would pay that bit extra for so there is warranty if it doesn't work.

::::: Deacon... Automotive :::::

Thanks for the replys.

Bee utey, I reckon that I will upgrade to the o2 sensors anyway as I am led to believe that this will give better engine management on petrol.
I do like your tank suggestion, I think that this is the style of tank that I will be using for whatever system I use. Although been quoted $950 new, so will be looking out for a good second hand unit!

I rang Davis Landys about their liquid injection, but they are not ready to be installing that set up as yet...

The installer near me uses the Elko system (The one that Pibby is using me thinks) which has a KME controller and vaporiser. From looking around appears that a few companies use KME with their various hardwares so it must be a pretty good unit I am guessing.

Sounds like you are going with best practice! Should work well.

The tanks regularly sell on ebay for under $200 out of date, try a few wrecking yards too. Cost to test is around $100.

i was going to add that if cost is an issue then go with the mixer solution that bee utey does with closed loop. my system is a kme which is distributed (solely?) in australia by elko. a few months back they were changing injectors from taurus to ... well can't remember but they are now rebuildable which is a step in the right direction. if going injected gas then putting in oxygen sensors is quite important. this circumvents any issues with sensors or the MAF.

i bought my car with the injected on it though i would be interested if anyone has done the paypack period/kilometres for the difference in cost between an lpg mixer with closed loop versus lpg injected including the cost of installing closed loop. i would hazard a guess it would be a fairly long period, possibly making injected ill advised in cases. however, if you like playing around with your fuel mixtures then injected is the way to go.

I do like to play with fuel mixes...much to my wifes dismay!

The Rangie that I have is a particularly good example of a 93, in that everything is in good nick and it runs really well. (It's just thirsty, like all of them..) I plan on keeping the car for a long time, which is one of the reasons to spend the money on injected gas. I also figure that when the sad day comes to move on I will take the kit off and fit it to the next steed.