removing gas system from tb42

[taslucas]

Ok so Ive tuned my tb42 to petrol only and haven't run gas in a long time so I thought it might be time to remove the gas completely.
Would there be a shut off valve on the cylinder itself?
My plan is to disconnect battery terminals, shut off gas at the cylinder then start working my way from the carby back, removing the gas related parts.
The spot where the gas enters the carby is pretty easy as the carby has a custom intake and does not have the original set up with the air filter on top. Also, about 300mm from the carby the gas line has a shut off valve, so in theory even if the cylinder has no shut off then the whole system can be removed in one piece without leaking?
The cylinder was nearly empty last time I used it.

Any tips or tricks on safely removing this system?

[pearcey]

Lucas mate , there's a valve on the tank. Lift the lid on the tank and there should be a shut off tap in there or an electronic solenoid.
good luck with the rip out mate

[taslucas]

Sweet, cheers mate. I guessed there should be one there.

[threedogs]

that shut off valve 300 from carbie is not your gas flow control valve is it?
Wont matter as as long as the tank is off its easy to strip the rest out

[Agronaught]

I'm still considering this as well, the cost of the tank inspection in March covers most of the cost of a long range petrol tank. And I don't do the km to really get the cost benefits of lpg.

[taslucas]

I'm still considering this as well, the cost of the tank inspection in March covers most of the cost of a long range petrol tank. And I don't do the km to really get the cost benefits of lpg.

yeah i only use mine for day trips or overnighters in the local area so no high km touring. I prefer the idea of running as efficiently as it can on one fuel as opposed to finding a happy medium between two fuels.
When i fitted the petrol spec plugs, pertronix coil and electric ignition and set the timing back to petrol specs i found it had a lot more power and also more economy than running petrol through the dual fuel set up.

So guys if you see a mushroom cloud coming from the south then you know i have done something wrong

[taslucas]

ok so just to double check:

The valve on the gas tank has: F <---> O

Im guessing that "O" is off?


DSC_0673[1].JPG

Looks like rust but its just three colours of mud haha

[Drewboyaus]

ok so just to double check: The valve on the gas tank has: F <---> O Im guessing that "O" is off? <img src="http://www.nissanpatrol.com.au/forums/attachment.php?attachmentid=52914"/> Looks like rust but its just three colours of mud haha

....or On.... Not very helpful, I know.... LOL

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[threedogs]

Just turn it off like a tap.
I would think its not worth running gas at the prices they are now 65c a ltr plus
mine you gas was only 12c a ltr in 92 when I brought my dual fuel 4x4.
I cant justify putting in gas at todays prices, plus all the other problems you get from running it.
The newer sequential systems are a lot more efficient, but your are better off IMO running on fuel only.

[taslucas]

....or On.... Not very helpful, I know.... LOL

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lol yeah its not all that specific. I reckon O means off because it was on "F" and i havent touched it since it was running on gas.

Next question: I have the gas in the line isolated between the solenoid in the engine bay and the valve at the tank. Do i just crack the nut and let the remaining gas in the line dissipate?