My R34 Gtt Lpg Skyline

[STATUS]

The LPG tank setup I have in my Series 2 Stagea is a manifold pack (3 smaller round tanks all connected up) and looks like one rectangular tank under the car.

I didn't want to put my tank in the wagon space and we looked at using the spare wheel well but wasn't deep enough for a 'torodial' round LPG tank (space saver tyre).

In the end seeing as I was going dedicated LPG setup anyway, we removed the petrol tank and my manifold pack tank (about 59 litres usable) fit in perfectly in the same location (not too low) and even used the same fixing points as the petrol tank.

The LPG tank was then covered with black sheetmetal all round and looks like an Torana A9X 'Bathurst' style drop tank. All in all quite a neat setup.

There's probably heaps more options available...Chuckie are you going dual fuel or dedicated LPG?

i would defnately keep an eye on profire, gasresearch was good 10 years ago but very long in the tooth now especially when compared with the current direct injection stuff parnell now distributes (prins etc). i was corresponding via email with profire awhile ago and it seems there is a few issues marketing the system to the market (shame)... they can sell the ecu (in theory) etc no dramas but the high pressure side of things is illegal for anyone but a licensed gas fitter to fit... same with all brands actually. The real drama is that 99% of the gas fitters are old skool and still use mixers and cant get there heads around tuning an ECU and all the guys who CAN tune the ECU cant fit the lpg kits.... quite a large dilema...

once our workshop is opened here at the end of march i hope to try one of their ECU's on our tow mule (TB45 patrol) it will soon have a t78 strapped to the side of it and the thought of having full control over the gas is very appealing.... im pretty sure there is nothing stopping anyone from using any ecu but the profire one has a few nice gas only features like tank pressure compensation etc..

lpg is cool if you have the room to sacrifice for a tank... but in your case fiting the tank under the car is the perfect solution. I did a similar straight gas setup and tank (drop tank style) in my old VH SLE many years ago much to the digust of the law and gas fiters back then... it was deemed dangerous as it was located in an impact zone.... what are the legalities now? i now AU wagons and stuff are all fitted in that area.

[Simon-S14]

Hye trent

Im a LPG gas fitter and believe me, a lot of the Gas systems that we do at my work are laptop programmable standalone LPG vapour systems which work very VERy well.. there is still a large proportion of old school falcon and commo set ups tho

drop tanks and the like are pretty common these days too, however there is many strict guildlines in which the installation has to abide by. tank has to be so and so mm off the ground, theres "escape" angle, certain mm away from the exhaust system, mounting hardware, etc etc.

with a 2004 onwards pajero the rear cargo area has a storage area, this is removed and the floor is cut out of the car, a bracketed tank and new lower floor are fitted pretty much replacing the rear of the car. the result is a tank you cannot see and doesnt take any extra space up.

not all cars are like this tho... some are real pricks to get tanks into and keep it legal.

[chuckie]

G`DAY LAD`S YES URAS IAM looking at FULL GAS,If you go gas i think that you GO ALL THE WAY.want to have a good look what tank system`s are around.I will spend some time having good look what shit i can set up under the car,will take some photo`s some dimension`s whats hot & what`s got to go.should be good,cheer`s chuckie.

[RB30-POWER]

G`DAY LAD`S YES URAS IAM looking at FULL GAS,If you go gas i think that you GO ALL THE WAY.want to have a good look what tank system`s are around.I will spend some time having good look what shit i can set up under the car,will take some photo`s some dimension`s whats hot & what`s got to go.should be good,cheer`s chuckie.

err, come again?

[STATUS]

Hye trent

Im a LPG gas fitter and believe me, a lot of the Gas systems that we do at my work are laptop programmable standalone LPG vapour systems which work very VERy well.. there is still a large proportion of old school falcon and commo set ups tho

drop tanks and the like are pretty common these days too, however there is many strict guildlines in which the installation has to abide by. tank has to be so and so mm off the ground, theres "escape" angle, certain mm away from the exhaust system, mounting hardware, etc etc.

with a 2004 onwards pajero the rear cargo area has a storage area, this is removed and the floor is cut out of the car, a bracketed tank and new lower floor are fitted pretty much replacing the rear of the car. the result is a tank you cannot see and doesnt take any extra space up.

not all cars are like this tho... some are real pricks to get tanks into and keep it legal.

yeah unfortunately you guys in my experience are among the minority.... i have been looking around in melb and i reckon only about 5% of the ones ive visited are using the latest type gear. I used to work with Chris Parnell years ago at Rex Gorell and i see his company now distributes the PRINS gear which is what i wanted fitted to the Patrol... it currentley has the old 425 impco mixer on it and that was the gear i was using 15 years ago the work ute had a nice PRINS direct gas injector setup on it but it was hard finding someone to do it.... maybe i was just visiting the wrong places and combined with what Pro-fire told me came to the wrong conclusion.

just another quick one... how long did it take to get your LPG installer license? ive got alot of free time lately and would not mind doing it just to add to the wall collection.

[Simon-S14]

several ways about it, can do what i did and work for an employer for 12 months then apply for the license, or the other way which i havent looked into much is to get the license outright with some theory/testing etc.

I know SA is the hardest state in which to get a license so you should be right haha.

To tell ya the truth ive had no experience with the Prins gear, but the equipment looks a lot like the zavoli gear that we use. ZAVOLI GEAR

Alsy at my work we have done a few LPG turbo diesels my boss has a turbo patrol which we converted and flicking on the gas was like hitting nitros.... a lot of extra power, however stopping it from pinging was the hard part, so we've done a bit of development with a gas metering system so it gets just enough to give gains but stop it from pinging... fun stuff.

[RS4StagMan]

i would defnately keep an eye on profire, gasresearch was good 10 years ago but very long in the tooth now especially when compared with the current direct injection stuff parnell now distributes (prins etc). i was corresponding via email with profire awhile ago and it seems there is a few issues marketing the system to the market (shame)... they can sell the ecu (in theory) etc no dramas but the high pressure side of things is illegal for anyone but a licensed gas fitter to fit... same with all brands actually. The real drama is that 99% of the gas fitters are old skool and still use mixers and cant get there heads around tuning an ECU and all the guys who CAN tune the ECU cant fit the lpg kits.... quite a large dilema

lpg is cool if you have the room to sacrifice for a tank... but in your case fiting the tank under the car is the perfect solution. I did a similar straight gas setup and tank (drop tank style) in my old VH SLE many years ago much to the digust of the law and gas fiters back then... it was deemed dangerous as it was located in an impact zone.... what are the legalities now? i now AU wagons and stuff are all fitted in that area.

Gas research a bit long in the tooth?

You maybe correct there, compared with modern SGI setups, however this is EXACTLY why I decided in the end to go this way........ proven product for forced induction application with own (simple) ECU, tunable throttle body with corressponding converter, additional injector/s? that sense boost pressure and meters flow directly into the throttle body etc.

I think there is a world of difference between the old Impco throttle bodies and the Gas Research throttle bodies as I think the advantage of the GR ones are able to be better tuned for a variety of demand points.... WOT to cruise. Also don't know if the Impco ones can be setup effectively for Turbo applications?

Sure it ain't SGI and don't expect it to be as good ... however I think some of the SGI ECU's may need some more development Eg. See above Prins ECU and hesitation on WOT on take off......no doubt a fix will come. Don't know if any of the other ECU's have the same problem for forced induction?

With all those 10, 11 & 12 sec 1/4 mile RB30 turbo VL's still running Gas Research... its old skool, but it works!

The LPG tank underneath my car replaced the fuel tank and sits no lower so is OK according to the regs.

Does anyone know if the catalytic converter has to remain if running dedicated LPG? Seem to have read somewhere that it still needs to be left in place regardless if running only LPG?

[urtwhistle]

hey fella's never ever would have thought this would cause soo much attention.

zavoli probly is the same as prins as in 90% of the gear i looked at the only thing that was diff was the ecu's

hmmm i wonder a drop tank in the 34 hmmmmm Shane at FFG should have his SS ls1 TT ute running soon thats runing 16 injectors i think and twin tanks, but dont quote me on that.

the profire ecu is ready to go aswell but its constantly being updated. soo deffinitly give brad a buzz.

regards

chris

[thedriver]

LPG fuel tanks...

Thought some of you may be interested in these conformable LPG taks from PPI (propane Performance Industries) - http://www.propaneperformance.com/html/index.htm

They are very cool tanks that give a much greater increase in internal gas volume for the same size space as a normal cylinder.

I'm not sure where they are available in Australia, but would be worth contacting them. These would be great to replace the existing tank in a LPG only setup.

I was looking at an injected LPG setup for my Stagea two or three years ago, but because I live in Canberra (and frequent the snow) there are some serious issues to overcome for cold starts in the winter. I don'twant to loose out on space because of a dual fuel setup requiring a second tank.

Also from another thread - http://www.skylinesaustralia.com/forums/Gas-Gtr-t221155.html

economy mods to a high performance based car and high performance mods to an economy based car - both silly ideas

lets face it guys you get a sports car you don't run it on gassssss.gas is for farts

Some of the people on this forum are clearly already aware of the economic advantages of LPG. But some are still very much unaware LPG has a lot of performance benfits, particulalry for forced induction engines. Being higher octane, you can increase boost pressure, it runs cleaner, causes less engine wear and can actually offer torque increases lower in the rev range which can benefit acceleration times and general drivability. A properly configured LPG system is fantastic and there are a lot of performance vehicles doing very good 400m times on LPG.

[samuri]

If a great tune is performed on a Non Aspirated Skyline so torque and power are improved 10%, will the SVI LPG ECU ( hope the terminology is correct) adapt itself to the improved petrol performance.

My new Current LPG set up returns poor fuel economy so it will need to be fine tuned by the LPG technician. How then would a future great petrol tune affect a prior newly fine tuned LPG setup?

BTW got a toroidal 51 litre usable tank and boot space is still great. Of course I now just strap the emergency tyre into the passenger seat and leave she who must be obeyed at home.

[urtwhistle]

the problem is with my setup, is that when I modify the petrol tune signifiicantly it throws the gas tune off. Other then retuning it all the time I have no idea. Im buying a wideband o2, pyro and data logger for the power FC shortly to make this process a bit cheaper and easier.

[GTS-tt]

Hello every1

I realise this is an old thread, but I thought I'd revive it anyway and see if any more head way has been made. I have an R34 which one day I would like to have an RB30 bottom end running soley on lpg. I have a mate running a dedicated system here in SA who tells me because of the clean burning nature of lpg that he cannot be made to pay for an emmisions test (I've even been in the car as a police officer starts to write a defect notice for an epa emmisions test only to have my mate explain he's running soley on gas, so we were sent on our way!) Given the laws seem to get tougher and tougher every year I'm interested to hear peoples thoughts. I know its a lot of cash up front, but to make the police leave me alone I'd happily rip the fuel tank out and go dedicated gas!

[urtwhistle]

unless you go liquid injection forget about it before you even start. I wish I had waited another year before I did it. Your best bet is to look on the XR6Turbo forums as there are some decent powered 1's floating around.

[ironpaw]

unless you go liquid injection forget about it before you even start. I wish I had waited another year before I did it. Your best bet is to look on the XR6Turbo forums as there are some decent powered 1's floating around.

+1

I've got LiLPG installed in my M35 Stag and made 250awkw.

I need bigger jets to make more poawr!

The only issue I'm having is switching over. Car stalls alot when it switches over to LPG - I think its something to do with the purge time being too short...