LPG Discussion Forum

Good point. I did have to do this to transfer lpg from a tank I purchased into the tank already in the car. I think it was a pain because the newer tank was a twin set up so had hydrostatic valves and didn't want to move the gas with a bit of pressure there.

Still, just getting bbq cylinder till ...

Sorry, late to the party. Had trouble with my account. Transferring isn't overly difficult, can usually manage with fittings you have laying around. Problem is the issue differential that you mention. I ended up pouring boiling water over the donor tank to try and up the pressure once things were ...

Cheers

I had similar issue on an Australian made multi valve that wasn't cheap (stupid design having to replace the whole thing for the 10yr inspection). Turned out that the float arm assembly that shuts of flow at 80% was somehow stuffed (plastic bit on the shaft broke) which closed of the valve that ...

Are those red tanks normally composite type construction? Seem to have seen photos like that around. Just wondering if that explains the price

Sorry for delay replying here. Been busy and forgot to get on.

So basically, I've run it at 0deg advance for a few tanks to make a good comparison.

A while back after oxygen sensor was replaced, I was getting 12.5l/100km on petrol, and got one tank of LPG at 14.5l/100km. I was really happy with ...

1.95l isn't as much as the total difference I saw, but considering temps when I filled each time I actually would have expected to put less in this time around.

That's a good point on part throttle vs wide open. You think some of the gains might only be seen at part throttle in same rev range?

I ...

Being the nerd that I am I had to check the thermal expansion data on liquid lpg. It's listed as 0.003/k, or thereabouts depending on temp. Say a 10° difference (0.03 factor) with my 68 usable litre tank gives 1.95l.

Pinger: the software actually has a feature where you do basically that, but just ...

:lol:

Cheers guys. I guess my point is that these variations aren't going to indicate consumption that is ~30% difference. I'm not measuring things down to the ml or anything, just trying to get ballpark figures. When I was around 14.5l/100 and then I get something like 17.5 then that's not going ...

But the fuel pump cut off is from the float attached to fill valve rather than pressure, so therefore temperature difference would only affect the density of the lpg rather than the level at which the pump stops filling (assuming angle of the car is the same etc)

This is assuming everything is the ...

Yeah, good point. But I didn't think differences in density and angle of the car would make a difference of more than a few litres. Happy to be corrected though. Over half a tank or more that would be a fairly small difference in consumption figures, assuming I'm correct

Well, just filled up to check consumption and it was at 16.4l/100km and wasn't flogging the car at all, so it's up 2l/100 from 2 fills ago at 0 extra advance. That was running 7deg extra advance. I've pulled it back to 3 and will see how this tank goes.

I'm guessing at 7 that it was before the ...

Cheers pinger. I don't even want to think about the work involved in that sort of thing. I used to get excited by those sorts of things, but energy is very lacking these days-I can't even remember what excited feels like!

That explanation of detonation is helpful and makes perfect sense, cheers ...

Thanks. I realised I put lab mixture in my post above yours, was meant to say lean mixture. Typing on phone.

On mixture and detonation, from reading I've done I was under the impression that rich avoids detonation due to the heat absorbed through vaporisation of the fuel, which would then only ...

Checked running last night. O2 sensor fine, and adjustments I made to mixture when it was showing lean on lpg were spot on (thanks to your tutelage lpgc) so it's bang on with petrol inject time now. I'm thinking the TAP must have affected things as it was perfect before using the TAP.

I'll back the ...

Sorry, been slow to respond to things here.

Pinger-definitely no knock sensors on my car. I don't understand why as knock sensors were very well established by 1999 (as you say). All I can think was trying to save money on manufacture and sending the crappy ones to Australia.

I watched that video ...

Unless the AEB TAPs work different, I thought the only proviso on TAP choice was the type of crank and cam sensors used-hall or inductive

Forgot to do it earlier, sorry. Cant copy paste from the PDF. This is from the manual for Stag 300, ISA2 and premium

Procedure:
-Press and hold the switching button and turn off ignition while holding it in
-press the button once more once the ignition is off
-LED indicator will flash after this ...

The idea is that it produces a protective layer by combusting, its not the oil that does the job so much as the burnt material produced by it burning. A sacrifical layer as such, but one that gets contstantly renewed.


Cheers Brian. I'm just trying to narrow down if it is the exhaust that has ...

Does it seem logical that valve saver fluid wouldn't do much for exhaust seats because it would combust? That's assuming it combusts