Lpg Liquid Injection - Part 1

[Fiver]

another quetion for me is will my turtle shell fit back over the top of the manifold and hide the injectors/coils etc like it does now?

It can be easily refitted with minor mounting modification. I love the idea of refitting it.

[johnnyk]

another quetion for me is will my turtle shell fit back over the top of the manifold and hide the injectors/coils etc like it does now?

Not without making some mods. Having said that, I don't mind having mine off (I haven't bothered to want to put it back on).

[V8YANK]

Sorry if I'm barking up the wrong tree here, but I've had excellent experiences with straight-gas on older vehicles. The minute I heard about injected, I think I lost my load.

I've got a big-block Chev, looking to get the best out of it. I'd put it on straight-gas tomorrow... but injected seems to be well-worth waiting for.

And do these setups qualify for subsidies, or is it like all the others I've done, all out-of-pocket

[T2000]

Sorry if I'm barking up the wrong tree here, but I've had excellent experiences with straight-gas on older vehicles. The minute I heard about injected, I think I lost my load.

I've got a big-block Chev, looking to get the best out of it. I'd put it on straight-gas tomorrow... but injected seems to be well-worth waiting for.

And do these setups qualify for subsidies, or is it like all the others I've done, all out-of-pocket

AFAIK the subsidy is still in place but I think it has been reduced from $2000 to $1750.
The iCom JTG system definitely qualifies for the rebate if the job is done by an approved installer.
I dont think that you will get this system running as "straight gas" - I WISH!
The system requires a petrol start then a 60second purge time before automatically switching to LPG.

Cheers

Chris

[johnnyk]

Can an APS rep or installer confirm whether we can organise to have the purge time reduced?

What was the issue (is it one of compliance) with having a, say 10 sec purge time running on straight gas??

- John

[T2000]

Can an APS rep or installer confirm whether we can organise to have the purge time reduced?

What was the issue (is it one of compliance) with having a, say 10 sec purge time running on straight gas??

- John

No idea why John, I was just told by my installer that it couldnt be done.

Regards


Chris

[johnnyk]

I'm pretty sure I've read on this forum somewhere that it's possible to change the duration.

Can anyone confirm?

- John

[HSV Listy]

It was in the old thread somewhere. Some company in sydney does it but dont think APS does it as mine was still 60 second changeover.

The LPG system is going well but my petrol fuel pump decided to die today ruining the race day tommorrow. Need full LPG and rid the dam petrol.

[T2000]

It was in the old thread somewhere. Some company in sydney does it but dont think APS does it as mine was still 60 second changeover.

The LPG system is going well but my petrol fuel pump decided to die today ruining the race day tommorrow. Need full LPG and rid the dam petrol.

Badluck on your petrol pump Listy...
Would love to start on LPG and totally eliminate cylinder washdown and the need for cold start enrichment (such a waste of fuel and a cause of engine wear).
If you find the installer who modded or adjusted the system please let me know.


Cheers

Chris

[Oztrack Tuning]

You cant clutch start it on LPG listy? Surely there is a way to get it started on LPG.

[T2000]

Hi Steve,

I really dont think that the iCom systems electronics will permit the system to run until the car has approx a minute of run time (although I dont know how that is "sensed"). Even if you stall then restart the car it will reset the purge timer again.
If you key to ignition the system knows that it needs to purge and will just sit there "flashing orange" until the car has been started and run for the full purge time then you get a "solid orange". Without starting and running the light never goes "solid orange". - did that make sense?

[HSV Listy]

I have been scratchin my head trying to find a way around it and try and get it to start on LPG but can not seem to find away to do it. I though about getting a jerry and a hand pump and pumping fuel in there for a minute to get it going. Also some aerostart to get me going.

Thing is there will be about 4 or 5 sets of laps and doing this over and over and idleing in the waiting area for 15 minutes it would just be a pain and too much risk of things going wrong.

I will get some aerostart or something to get it to the mechanics on Monday though. Started plenty of tractors on the stuff so should be right

[PoweredByCNG]

The purging will NOT occur if the engine is not running. This is because it is illegal in Australia to have LPG fuel circulating through an engine bay in these conditions. The purge time for the ICOM JTG system is always around 45 seconds on our particular install.

[danielsan]

Yes the purge time can be changed.

The earlier units can be changed by opening up the icu and changing the 4 DIP switches. They can be set to monofuel, 10sec, 30sec or 60sec. Opening the ICU and changing the dip switches will void your warranty

If yours has what looks like a 3.5mm jack on the side(see image), you'll need a data cable and software (or a scantool of sorts, i'm not sure which as info is incredibly hard to come accross) These ones i'm not sure of what purge the times can be set to. Mine was installed DEC 08 and has the 3.5mm jack..


Users on a german LPG site (where i got this info from) have found that a 10sec purge time is ok in warmer weather, but creates drivability issues for the first few minutes in colder temps. Most of them have theirs set to 30sec purge.

[T2000]

Good info - thanks Daniel.
Do you have a Link to the forum?