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The latest liquid injection systems already achieve this without major engine block changes. Those are injectors that spray the LPG liquid instead of gaseous and the expansion ratio is some 400:1 -> while the LPG goes in the cylinder it expands and ups the pressure while lowering the temperature at the same time. Preliminary tests with these systems have shown better lower end torque on engines without modifying anything but the injection system.Quote:
Originally Posted by pundit
LPG + turbo = boom.
but anyway, i did consider it, but only if i managed to find a broken E38 with a 3.5L V8 M62, and put in 12:1 or higher compression pistons.
the other aspect is that gasoline has lots of lubrication for the cylinder walls that LPG doesnt, so i would still use my gas tank, but hook it to a single fuel injector in front of the intake manifold to squirt a lubricative high octane substance (50/50 acetone/FP60) in vapor form, which would increase power as well in a higher compression engine with timing closer to TDC.
and using individual cylinder propane injection with special bosch injectors is the only way to go.
No, not really. I know a few that have been driving turbos on LPG without a single problem.Quote:
Originally Posted by BillionPa
Besides, with a sequential injection system there'd be zero risk for that.
There used to be an LPG injected supercharged 351 in an old ford capri running at the drags here in Western Australia.......It used special injectors and a Microtech LTX-8 ecu.
She was pulling 850 HP on the Dyno....and running mid 8's on slicks.
They had to use magneto ignition as the cylinder charge density was 'blowing the flame out' with MSD.
I just heard on the radio that the Aussie government is going to offer something like 1k to convert you car to LPG. Sounds good to me.
http://www.abc.net.au/news/newsitems...8/s1713855.htm
that rumor has been around for a while, but we'll see what happensQuote:
Originally Posted by F4Phantom
i think it would be a good idea. but most good ideas don't happen!
a straight 1000 gift or an interest free loan?
It's actually a $1000 dollar rebate on the cost of the installation of the gas system.
it is in place already here in W.A.
I've been told by a gas fitter that I cannot fit gas to my 535 due to the type of management system fitted to my car (stock) and that if it ever back fires the AFM vane will shatter when the backfire slams it shut.
Past day on the radio its been announced several times that the rebate is "up to $2000".
Im guessing that to get the maximum you would need to purchase a brand new car.
I doubt that the government is going to give out $2000 for any car that wants it, it would cost them too much, it will likely be ab encouragement to purchase a new car, which they WILL make that $2000 back on in tax.
Guy who did our volvo gas conversions charged us $1500.
I just saw our lying cane toad of a prime minister hop out of the swamp to chirp about it on TV.
Trying to gain support from this relic of an idea on the news, he revealed that they have no idea about how the criteria will be set and have budgeted to do '2-300 hundred thousand cars' (he said under his breath). You can bet their mates will be keen to make their fleets the main beneficiaries.
OK, sorry: That was a bit cynical of me.
Perhaps if we read between the lines a bit more, given the numbers they are hoping to limit it to, perhaps we can expect the rules to be something like the following:
To get it you will have to meet these criteria:This, (or owning a corporate fleet or two) will give you the best chance of cashing in.
- You must book your car in for conversion RIGHT NOW or buy a new one RIGHT NOW with LPG optioned. If you wait until the details are released so you know how much you can count on (if anything), you won't be eligable. Or;
- You must be in a country location (where gas stations don't stock LPG). If you are one of these people you may have a month to think about whether you will take up the offer. Or;
- You must be in a marginal country electorate, have a family and an annual income of more than $150,000 a year (or they might just mandate that you must buy, or have bought in the last 3 years, a new car).
Realities aside, I think it will be interesting to see how they stop the cabbies getting it. There are always a few hundred thousand cabs that need replacement since they can never bring themselves to maintain them properly...