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twin lpg tanks

Posted: Mon Aug 21, 2006 11:05 am
by GQ Bear
Ok, i want to run two 120L lpg tanks. How can this be done?

Ideally i'd like to be able to switch between tank 1 and tank 2. One filler or two?

Alternitavely, two tanks plumbed in-line creating a 240L tank would be fine

Does anyone have pics of this being done? Is it legal? Can anyone recommend an lpg fitter in melb who can do it, or is it a case of getting enzed to make me a hose?

Will little Johnny pay part of cost for the second tank, etc.??

thanks guys

Posted: Mon Aug 21, 2006 11:28 am
by TRobbo
Friend of mine had a 75 tray running straight gas into a 350. It was set up with twin tanks in the rear which were joined together and then a third tank which was seperate that he could switch to as required. I think all up he carried around 500 ltrs of gas under the tray. Not sure if he had one filler or two.
Smithys in Bayswater Vic did the conversion - sorry dont know the phone number off hand. For a time they also did chasis mods so that for example they would widen the rear section of chassis on a rangie to fit 200 ltrs underneath. Dont know if they still do it.
So yes what you want can be done. Not sure why you would want to run the two tanks seperately, I think in line would be more practicle.

Posted: Mon Aug 21, 2006 1:01 pm
by Loanrangie
Twin tanks filled from one filler is easy and also to switch between tanks is easy, just need a 3 pos switch wired between the lpg controller and tank lockoff's. Could also wire it so contents of the tank selected is shown on the one gauge.

Posted: Mon Aug 21, 2006 1:29 pm
by sootygu
I set twin tanks ion a 60 series and is fairly easy to do.

Only 1 filler is required with a T piece for each tank will shut of automatically once it reaches capacity.

The out lines of each tank have to go into one hydrostatic valve, when the tanks are used the valve uses a bit of gas out of each to even the pressure between the tanks. This had to be done about 7 years ago so not sure if this still has to be used.

There’s a place in Oakleigh that sells all the lines valves ect. It may be worth calling them and they should be able to help.



AMR Manufacturing
20 Burlington St Oakleigh VIC 3166
ph: (03) 9563 1508


Cheers

Posted: Mon Aug 21, 2006 3:51 pm
by bigcam
yep got 2 in my 60, filled from the 1 filler, with a T as one reaches full the afl valve shuts and the gas goes into the next tank.

the solenoids are wired seperate so a switch up front is tank1, off, tank 2, i have 2 guages but easy enough to use 1 but all the led's make me feel like i have lots of fuel!!!

as far as im aware as long as its done by the pro's its all legal but you have to have 2 red LGP diamond on each numberplate so the fire brigade know to stay the F away from the car if shes a BBQ.

as for johnny giving you money no chance at all, all he has done is make all the LPG fitters nice and rich, you wont find a coinversion for < 2k now...

if i was running a gas fitting business all i would have heard was CHA CHING!!!!!

Posted: Mon Aug 21, 2006 6:07 pm
by GQ Bear
Yeah thanks guys for the info

I had another brainwave today (scarey thought)

How about using a forklift type gas tank that can be removed and replaced as required. Therefore when lots of fuel is required for long trip/comp etc. you can carry 2-3 lpg tanks. When excess fuel is not required or lpg servo's are available you only carry the one tank.

It would be like carrying jerry cans of petrol.

Can this be done? legal??

Posted: Mon Aug 21, 2006 6:27 pm
by RaginRover
GQ Bear wrote:Yeah thanks guys for the info

I had another brainwave today (scarey thought)

How about using a forklift type gas tank that can be removed and replaced as required. Therefore when lots of fuel is required for long trip/comp etc. you can carry 2-3 lpg tanks. When excess fuel is not required or lpg servo's are available you only carry the one tank.

It would be like carrying jerry cans of petrol.

Can this be done? legal??
I wouldn't use it - they don't usually have the same saftey features as car tanks. if they are portable they won't be externally vented and they don't ususally have the lockout valves - they could leak in the car - same as a bbq cyl - only one tap and no pressure relief and no external venting


You need to employ a hydrostatic valve to connect the gas line that runs to the front of the car - this stops the tanks filling each other up - i.e. when one gets hotter or colder.

They can be filled from the one filler with a standard t piece and the hydro valve on the way to the converter.

These cost $90 last time I priced one - I wouldn't install two tanks without one.

Tom