Gas questions

[Spadge07]

Seeing I'm poor (like most RR owners) and petrol costs are killing me, I've recently bought a brand spanker gas setup for my 84 2dr. I got everything (cheap of course) - the underneath tanks, gas lines, converter and two mixer setups - one for a holley/weber and mixers for the twin carbs. I'm rebuilding a 4.2 stroker to put in the car too, with an Edelbrock manifold.

What I wanted to know was what parts I'm allowed to install myself that don't require certification. Or does it all have to be installed by a shop to be properly certified?

Also, I'm not sure whether to run the twin carbs or a holley/weber etc, especially seeing as it will be on gas 95% of the time. I'm leaning towards the twin carb setup, though I dunno whether there'll be enough clearance under the bonnet for the edelbrock manifold, an adapter and the twin carbs.

Any suggestions would be great, as I get more confused every time I think about it!

[George130]

Fitting depends of the inspector and how much they trust you. A friend of mine fits all his gear and then gets it inspected and stamped but the mechanic trusts him. Some of them won't certify work they havn't done. Talk to your local gas people and see what they are willing to do.

[101RRS]

I understood it is only the gas lines and associated fittings that require certification - but for rego it will require a LPG inspection which checks the overall system - but I could be wrong.

Gazzz

[Spadge07]

Thanks guys, I'll look into over the weekend. Garry, I was thinking similarly to your ideas about the process, which if correct would be great. Hopefully I can do a deal with the local lpg blokes to save myself some cash!

[loanrangie]

No problems doing it your self, i found a place who will compliance my rangie for $90. By the way, if you have copper lines you cant use them again, if they are flexible you can. I have flexible lines thru out, i wouldnt use copper in a 4wd due to risk of cracking and rupture.

[Spadge07]

Serious?!! That's what I've been waiting to hear! I noticed you are in Melbourne, as am I, so I'm definitely interested in that place you found if you could slip me their details. Please!!!

I forgot I had a new set of gas rings for the twin carbs, and have heard good reports about them so I think I'll use them instead of the dual mixers.

[LandyAndy]

Hi Spadge
You will find at the moment 99.9% of LPG converters are that busy they cant look at you vehicle even if they wanted too.The good ones wouldnt have a problem cetifying the work you are able to carry out.As long as you can fit the LPG gear to spec,and leave them to do the actual plumbing up it shouldnt be a problem.
My Bro has done it over here in WA on 2 vehicles with no problems at all,BUT he has a mate with an LPG licence and my Bro is a perfectionist.
The money is there to be saved if you are up to the job.
Andrew

[Ralf_the_RR]

Originally posted by loanrangie
By the way, if you have copper lines you cant use them again, if they are flexible you can. I have flexible lines thru out, i wouldnt use copper in a 4wd due to risk of cracking and rupture.

That's odd.
I was led to believe that you MUST use copper lines.
Might be different for each state.

[Spadge07]

I'm not sure either way, though the new gas setup I have came with all flexible lines.

Andy - Besides saving money, like your bro, I'm a perfectionist too (and my Dad is twice as bad). So I'm definitely up for installing what I can myself as then I know it's been done properly.

[crossy]

the gas bloke i spoke to said if you have a mono body its ok for copper.

if you have a chassis then you must have flex line due to movement.

i paid $15 per metre for the flex line. + $7.00 per fitting

too easy.

BTW afaik -- you must saddle flex line every 300mm

[loanrangie]

Originally posted by Spadge07
Serious?!! That's what I've been waiting to hear! I noticed you are in Melbourne, as am I, so I'm definitely interested in that place you found if you could slip me their details. Please!!!

I forgot I had a new set of gas rings for the twin carbs, and have heard good reports about them so I think I'll use them instead of the dual mixers.

The gas rings are mixers ? I have fitted them to mine and its running like crap, i think my converter needs a new diaphram though. I am considering fitted a 450 4brl holley with sprintgas new gen mixer.

[shaunp]

The only problem with a Holly is they are crap off road on petrol, if you are running gas it would be fine and easier to set I would have thought.

[Spadge07]

Originally posted by loanrangie
No problems doing it your self, i found a place who will compliance my rangie for $90.
Loanrangie can you please divulge the details of this place you found?

[Disco300Tdi]

A little curious Spadge...

What is the date stamped onto the tank???

[Spadge07]

They're the twin underneath tanks - still new and unused. I can't remember exactly but I think the date stamp is from '98 or '99. Might be worth me getting them tested before I put them in anyway. Why do you ask?

[Disco300Tdi]

The tanks need to be tested every 10 years
from the date stamp

If they were over 10 years old without a retest stamp
you wouldn't get it passed