Outer Limits 4x4 Board

I've got a TB42e dual fuel and have been thinking about running straight gas, I recently found out about gas injection.

Can I use std petrol efi system and injectors for gas and what's involved?





Also i want to raise lpg tank into cavity created by 2" body lift. anyone successfully done this? with pics?


THANX

Think there is a thread on moving ya gas tank, I want to do the same.

http://www.parnell.com.au/index.php?opt ... &Itemid=26

http://www.abc.net.au/newinventors/txt/s1345083.htm

also some info..that I cut and pasted from another forum

"I had communication via email to Barry at Gas Injection Technologies about 6 months ago. At the time his system was very close to the end of the development stage, but he had nothing to sell. The system that I spoke to him about was also Sequential Vapour Injection and you do need a converter, although it is positive pressure, not negative pressure as used with the Impco mixers. The big difference with his system is that the injectors have identical electrical characteristics as the factory petrol injectors, so you dont need any additional electronics to drive the injectors. On most of the other SVI systems you need an additional LPG ECM that either runs alone or interfaces with the factory ECM. On most later model EFI cars, the ECM monitors injector current pulses and checks for ringing and other irregular pulse shapes and starts generating fault codes if everthing is not right.
The advantage of the LPG injection being sequential is that the gas is injected into the manifold right at the port only when that cylinder is on the intake stroke. This means there is no huge amount of gas in the intake manifold at any one time, no catastrophic backfires to blow the crap out of your air box. All the blokes that drive LPG V6 Commodores know about that.
...."

Thanks for the info RoadNazi. I rang Purnell's (the first link). This refers to a complete dual fuel setup which will give me "marginally" better economy and "marginally" increased power to what i'm acheiving now. It is still dual fuel, but the gas is injected through a seperate set of injectors.

He reckons straight gas injection can't be done

Does anyone know otherwise?

Liquid injection will be the next big thing. http://www.lpgli.com

I have raised the gas tank on my gq. I will try to get some pics for you
blokes soon just got to work out how to get them on here. It might be difficult as my rear bar covers the spacer bracket i made up.

GQ Bear wrote:I've got a TB42e dual fuel and have been thinking about running straight gas, I recently found out about gas injection.

Can I use std petrol efi system and injectors for gas and what's involved?

Also i want to raise lpg tank into cavity created by 2" body lift. anyone successfully done this? with pics?


THANX

Not sure about the gas injection, but I run straight LPG on my TB42e.

I have a 100l usable (120l tank) under the back where the petrol tank used to be.

The GQ runs great on straight LPG, as it is tuned for LPG, not a compromise like dual fuel I did not really notice a drop in power. I get between 4-5km/litre, which is not too bad at 55cpl for LPG.

I got in before the petrol prices soared. I bought my LPG setup off ebay cheap as chips, then got the GAS Man in Sydney to set it up.

I would never even think of driving this car on ULP at the current cost of fuel. But as it is now I spend about the same amount of $ on LPG as smaller cars are spending on ULP (maybe less !)

Shorty40 wrote:

GQ Bear wrote:I've got a TB42e dual fuel and have been thinking about running straight gas, I recently found out about gas injection.

Can I use std petrol efi system and injectors for gas and what's involved?

Also i want to raise lpg tank into cavity created by 2" body lift. anyone successfully done this? with pics?


THANX

Not sure about the gas injection, but I run straight LPG on my TB42e.

Yeah, this is how i was originally thinking of doing it as i basically run gas 90% ANYWAY AND ONLY USE PETROL FOR STARTUP AND reserve (sorry about the caps, clumsy fingers).

I keep getting told by people that you must retain an auxillary petrol supply for startup with efi engine Got any contact details for GASMAN in Sydney?

The only reason i was looking at injectors is 'cos their already there why not use 'em for something

Shorty40 wrote:

GQ Bear wrote:I've got a TB42e dual fuel and have been thinking about running straight gas, I recently found out about gas injection.

Can I use std petrol efi system and injectors for gas and what's involved?

Also i want to raise lpg tank into cavity created by 2" body lift. anyone successfully done this? with pics?


THANX

Not sure about the gas injection, but I run straight LPG on my TB42e.

I have a 100l usable (120l tank) under the back where the petrol tank used to be.

The GQ runs great on straight LPG, as it is tuned for LPG, not a compromise like dual fuel I did not really notice a drop in power. I get between 4-5km/litre, which is not too bad at 55cpl for LPG.

I got in before the petrol prices soared. I bought my LPG setup off ebay cheap as chips, then got the GAS Man in Sydney to set it up.

I would never even think of driving this car on ULP at the current cost of fuel. But as it is now I spend about the same amount of $ on LPG as smaller cars are spending on ULP (maybe less !)

its actually a 115l tank and its about 92-95 litre useable.

but AFL's vary when the temps are difefrent, and even so at some servos you can sqeeeeeze 110 litres in a dead empty tank just before a long trip

Jes

GQ Bear wrote:

Shorty40 wrote:

GQ Bear wrote:I've got a TB42e dual fuel and have been thinking about running straight gas, I recently found out about gas injection.

Can I use std petrol efi system and injectors for gas and what's involved?

Also i want to raise lpg tank into cavity created by 2" body lift. anyone successfully done this? with pics?


THANX

Not sure about the gas injection, but I run straight LPG on my TB42e.

Yeah, this is how i was originally thinking of doing it as i basically run gas 90% ANYWAY AND ONLY USE PETROL FOR STARTUP AND reserve (sorry about the caps, clumsy fingers).

I keep getting told by people that you must retain an auxillary petrol supply for startup with efi engine Got any contact details for GASMAN in Sydney?

The only reason i was looking at injectors is 'cos their already there why not use 'em for something

THE GAS MAN

A.B.N 31 003 968 910
Automotive L.P Gas Specialists
8c Hiles Street, Alexandria NSW 2015

Phone: 02}9319-4114
Fax : 02}9698-3343


If you tell him that ALEX sent you, he will look after you.

Jes

jessie928 wrote:

Shorty40 wrote:

GQ Bear wrote:I've got a TB42e dual fuel and have been thinking about running straight gas, I recently found out about gas injection.

Can I use std petrol efi system and injectors for gas and what's involved?

Also i want to raise lpg tank into cavity created by 2" body lift. anyone successfully done this? with pics?


THANX

Not sure about the gas injection, but I run straight LPG on my TB42e.

I have a 100l usable (120l tank) under the back where the petrol tank used to be.

The GQ runs great on straight LPG, as it is tuned for LPG, not a compromise like dual fuel I did not really notice a drop in power. I get between 4-5km/litre, which is not too bad at 55cpl for LPG.

I got in before the petrol prices soared. I bought my LPG setup off ebay cheap as chips, then got the GAS Man in Sydney to set it up.

I would never even think of driving this car on ULP at the current cost of fuel. But as it is now I spend about the same amount of $ on LPG as smaller cars are spending on ULP (maybe less !)

its actually a 115l tank and its about 92-95 litre useable.

but AFL's vary when the temps are difefrent, and even so at some servos you can sqeeeeeze 110 litres in a dead empty tank just before a long trip

Jes

Cool. Thought it was somewhere around 100l I have put over 100 a few times

Thanks for the GASMAN post They are quite thorough in the work they do there - no dodgy short cuts I was very impressed with their work

Gas man hey...dodgy as all hell. Nah just kidding i work there im a third year apprentice gas fitter next time your in ask for Doug thats me. oh and im new here so hi and cool site.

DCM wrote:Gas man hey...dodgy as all hell. Nah just kidding i work there im a third year apprentice gas fitter next time your in ask for Doug thats me. oh and im new here so hi and cool site.

Joined the site cause we were talking about you hey ?

You might have been there when I got mine done - about June last year.

The place looked like it was very well run. And the tune you guys did has not been touched since then

DCM wrote:Gas man hey...dodgy as all hell. Nah just kidding i work there im a third year apprentice gas fitter next time your in ask for Doug thats me. oh and im new here so hi and cool site.

Do you know or can you find out whether i can run straight gas through my petrol injectors. Also i'm thinking about putting on a supercharger so how's the best setup in that case? I'm thinking two gas tanks straight gas. Should i get rid of the efi with the rest of the petrol stuff or can i utilize it for gas?
It may even be worth the trip to shitney to get it done. I just keep getting blank stares and can't be f**ked thinking about it answers down here.

The plugs on the top of my injectors were just disconnected. Not sure what else was removed/disconnected from the EFI setup.

joe crothers wrote:I have raised the gas tank on my gq. I will try to get some pics for you
blokes soon just got to work out how to get them on here. It might be d
ifficult as my rear bar covers the spacer bracket i made up.

HOW U GOIN WITH PICS JOE CHEERS.

Have to take rear bar of i will try hard to get photos over weekend.
sorry about the wait.

NO WORRIES THANKS FOR THAT

DCM wrote:Gas man hey...dodgy as all hell. Nah just kidding i work there im a third year apprentice gas fitter next time your in ask for Doug thats me. oh and im new here so hi and cool site.

How much $$ to get a Dizzy regraphed these days ? Just a rough price will do . Its a 4cyl 22r toymota . Might save me a phone call


Cheers

hey gqroo,
these are the photos of the gas tank lifted. hope you can understand them. got more photos if you want to have a look at anymore or you have any questions. all the cuts on the gas tank were made by a hack saw just to be safe.
joe.

Yea photoes have answerd some qs?.Hopefully make start on it 2morrow unless its raining and i have 2 check some track conditions thanks for photoes Joe.
Lou

glad i could help you dont hesitate to ask more q's or need more photos
keep me posted on ur progress. joe

hi all... GQbear its not possible to use your petrol injectors for gas if you want to go straight gas we will just unplug your injectors and fit a 225 impco mixer and an l convertor. If you plan to have twin tanks you could go a d90 (i think) under the back and a small tank in the boot not sure if you can get a tank under the side none of your petrol gear is of any uses. shorty40 i was there in june...oh and my ears were burning so i joinde sorry to hijack the thread.

DCM wrote:hi all... GQbear its not possible to use your petrol injectors for gas if you want to go straight gas we will just unplug your injectors and fit a 225 impco mixer and an l convertor. If you plan to have twin tanks you could go a d90 (i think) under the back and a small tank in the boot not sure if you can get a tank under the side none of your petrol gear is of any uses. shorty40 i was there in june...oh and my ears were burning so i joinde sorry to hijack the thread.

I don't mind hi jacks..Do you install Gas Injection systems?

If so:

I have a 93 Mav , LPG dual fuel, Carby.

To run a direct injected gas car, does it first have to be an EFI. If so what would you need to fit an aftermarket EFI system to my vehicle .

My distributor is a standard apart from a Pertronix hall effect conversion .

If the vehicle requires to be EFI, what device triggers the injection sequence?

Could your run two sets of injectors on an injected manifold one for petrol one for gas.

Hi road nazi..

I don't mind hi jacks..Do you install Gas Injection systems?

yes we do install factory vapour injection systems.

To run a direct injected gas car, does it first have to be an EFI. If so what would you need to fit an aftermarket EFI system to my vehicle .

yes it has to be a EFI vehicle because it uses the ecu of the original petrol injection system.

If the vehicle requires to be EFI, what device triggers the injection sequence.

with the kits i have installed so far we install a piggy back gas computer witch just plugs in and picks up the vehicle info and uses that info to fire the injectors when its needed.

Could your run two sets of injectors on an injected manifold one for petrol one for gas.

yes you can run petrol/gas injectors on the one manifold. with the rodeo i have to drill and tap the manifold and install small fittings that i can then attach the injectors. I have never seen nor heard of a gas injection system for a partrol or an after market one but the gas injection is still only very new and still alot of bugs to work out as i have to fix one tommorrow any how i hope this all helps.

Hi Doug(DCM).
What system do you guys fit there? It sounds like the BRC/IMPCO we fitted where i used to work. If so, have they devoleped a 8 cyl version yet?

Hi SLOGQ. yeah its BRC/IMPCO made in Italy. A while ago we did a f150 yank import with the 5.4 litre(i think) v8 injected with a vapour kit but we had alot of trouble with it as it never ran to well so we havent done one since. We did a AU falcon xr6 about a month ago with injection seems to go well with the kit thats on it not sure were the kit come from i think it was from Parnell.