there was a company here in aus that for a short time was selling efi LPG using conveted petrol injectors and injecting the lpg as a liquid it required very complicated corection maps due to presure changes from temp and a efi fuel pump int he lpg tank

however for all the trouble the cars that they converted actually produced more power due to the cold intake temps

so my dad and I have always wondered if you could use LPG as a form of intercooling

a small NOS jet squirting LPG instead of NOS into the intake track under boost as a extra fuel source

the -50 lpg temps should be great

We have some old ones that have a seperate fuel lock & convertor , which has worked well in the past .The new ones are a convertor and lock all in one . so if you have a prob. with one you have to tend to them both at one time , but less probs. all together.Over a period of time you may have to richrn the mixture up on cold days to start the engine, cause lp doesnt have a choke .,& yes the LP that I have workrd on from day to day does create moer carbon than a gas engine ./ They tell me that Lp is sopposed to burn cleaner than gas ( I don't beleive that ). I have had to take an intake off and take a torch 7 burn the carbon out of one . The engine couln't breath. The engine was only 3 years old. Lp does have it;s advantages though you just have to stay on top of it over time. 9 just like anything else though) tonight so bare with the misspellin

All my equipment is european, The converter, lockoff and VPM mixer are made in italy By OMVl, the tank is made in croatia. All E-code certified, much more stringent than USDOT certidied stuff.

OMVL Italy - English

I like that the european kits use an electronic lockoff with 3 shutof points ( tank,engine bay, and at the vaporizer ) I also get an electronic fuel level gauge and an on tank gauge, the tank also have a built in fill stop and doesn't have an 80% bleed ( which i think is good, why vent gas to the atmosphere )

Is the carbon build up worse than what one gets running gasoilne? One of the selling points is that there isn't supposed to be carbon buildup, might it be from running gasoline part of the time? Cold starts are fairly easy, i have to keep the throttle open a little with my foot, but it warms up quick, seems to be that it lacks a choke, not that the fuel isn't vaporzing, if it were used in a cold area i'd install a block heater to help it be ready sooner. I'll have to keep an eye on the carbon buildup over time, since this is a brand new motor and only ran on gasoline for about 4000 miles, i'm going to be doing an oil change soon and switching over to synthetic oil.

my converter has a drain for "sludge" I wonder if the more recent hardware is more able to deal with low quality fuel...

I think the car runs better after 3 days than it ever did on my weber 32/36 ( but 30 + yeat old webers just seem to have problems, the guy at the carb repair shop doesn't like them, DCOE's are a differnt beast and work well )

How much does boring 30 thousandths of an inch over increase the compression?

I am a forklift mechanic here in the U.S and all of our forlifts run on propane . We have only one A-15 in the hole fleet of 120. This perticular lift can run on propane or gasoline by the flip of a switch. We have to crank it on gas , then flip the switch to propane cause it doesn't like cold weather.What kinda fuel lock & convertor are you using sleeper? The black stuff that gets cloged up in the fuel lock & convertor is actually has an oil base , we have the same prob.If you ever tear down one of these engines after a few years or so there is alot of carbon buildup. in the intake & on top of the pistons too.

I've been so busy lately, I'm in mexico till 12/27 then I'll be back home and then I'll take a lot of pics of the actual install.

I got married 12/21 :)

I'm using a vaporizer that's boost capable with a VPM, so someday I can turbo it.

I think the system is very simple, the carb has 0 adjustments and the vaporizer only has an idle adjust and mixture adjust, then there's the adjustment for what i call back pressure, so yes only 3 adjustments and 1 for the throttle body minimum.

runs good, held 75 mph up a hill that i only could ever go up at 75 mph, so power is good, running slightly rich, and need more advance on the dizzy, but I also have a multi strike CDI box.

have you got a photo of the system under the bonnet?

we do legally have to run filters inside the LPG lockoff defore the converter. But the black sludge, called rough ends, are not dirt in the fuel but a by product of converting the liquid into gas, just a nother result of poor refining in this country. As for pricing here, LPG is currently averaging 50c au per litre which works out to be $2.25 au per gallon. Which sucks as the LPG sold here in aus comes from Bass straight which is local and our LPG in final refined form is sold to China for 3cents au per litre. we pay about 16 times that for not fully refined LPG. There are only 2 places in Melbourne that I know of that sell PURE propane to motorists, they are gas distributing depots.

That system are you using, looks like a complex converter with a 'spud' mixer.

your lpg system doesn't have a filter before the regulator?
or doesn't the filter get those bits? ever tried getting lpg from someplace that fuels forklifts?

I've heard of those mixes that aren't 100% propane, those could be bad for a turbo vehicle or ant other time you get knocking.

there are some countries where they practically give LPG away like britain. I just paid 2.15 /gallon petrol is 2.19 and I really should have paid less, but needed gas. prices range from 1.69 - 3.50 depending on where you get it.

I really want a turbo, then maybe switch to hydrogen or some really weird fuels.

RE the manifold, I sent that out to be made, cost $150, but it's an intermediate step, meant to be quick and dirty, as the final goal is turbo power, i didn't want to waste alot of money on a non turbo manifold. If i did it over the throttle body adaptor would mount the TB horizontally.

Propane is the way to go! Unfortunately we dont get 'Propane' here in Aus as our LPG is a mix of Propane and Butane, Propane has an octane of around 105-110 but butane is only around 89, so the octane of our LPG is anywhere from 94 to 100. And is it not well refined which causes the converter to get clogged up with black crap as the fuel changes from Liquid to vapour.

But I just converted my 3.0l Skyline to LPG and it actually has a whole 1.4 rwkw more power then petrol!

Go the gas!!!!!

Wow thats very smart indeed looks to be good for the future/now ,whats the milage like ,seems fairly well priced too ...Started reading install manual i think i will have a better understandig of the system once iv read it ....nice work too on the manifold ......