Auto-LPG Conversion Thread

[eyshmechanic]

Hi there, eyshmechanic! Glad to finally meet someone who wants to DIY his own conversion. I got most of my initial information from this website:

http://wps.com/LPG/LPG-book-final.html

more information on Propane conversion kits here:

http://cars.rasoenterprises.com/index.html

I have some Do-It-Yourself installation experience and parts and would gladly share any comments and insights. Just ask.

steve

hi steve, thanks for the info and don't worry you will hear a lot from me he he!

[ghosthunter]

slightly OT: if this goes on, we actually might have enough people to form an auto-LPG users EB.

[niky]

Hmmm... just talked to Tartarini... they quoted me 66k pesos for an SGI kit with the donut tank (that fits in the spare tire well... that's 6k alone!).

The SGI kit requires no holes to be bored in your intake manifold... it'll use your stock injectors, with a computer-controlled valve system to seamlessly switch between gas and LPG on the run. There's also a bundled ECU (which probably explains the price... most ECUs cost 20-40k pesos) that'll monitor the system and switch back to gas if anything goes wrong. The whole system uses your stock timing maps and fuel maps...

Supposedly, the difference in power is very slight (na-dyno-test din nila), and with a donut tank, I won't have to sacrifice luggage capacity... just imagine... a 1000+ kilometer range with two full tanks and a trunkful of luggage...

Going there this Saturday. Will take pics.

[ssalonga]

The SGI kit requires no holes to be bored in your intake manifold... it'll use your stock injectors, with a computer-controlled valve system to seamlessly switch between gas and LPG on the run. There's also a bundled ECU (which probably explains the price... most ECUs cost 20-40k pesos) that'll monitor the system and switch back to gas if anything goes wrong. The whole system uses your stock timing maps and fuel maps...

niky,

I am really curious how they are able to use your stock injectors to feed propane into your intake manifold. The stock injector only handle liquid fuel (not gas like lpg), unless they propose to inject liquid lpg through the same injector. The pressure requirements for liquid lpg would mean that the injector must handle upwards of 300 psi!

I have been researching and only GTI in Australia has developed such an injector and it has to replace your stock injectors! I suspect they will use an ordinary mixer to feed your intake manifold and use an emulator to "fool" your injectors when operating on lpg. That way no extra vapor injectors, no extra holes!

Sequential Gas Injection usually requires vapor injectors in each cylinder, its best to find out exactly what hardware you are getting, you may be paying more than you need to.

BTW, what car and engine are you installing it in?

regards,

steve

[ssalonga]

niky,

I have been researching and only GTI in Australia has developed such an injector and it has to replace your stock injectors!

Gas injection Technologies Pty Ltd in Australia is found at:

http://www.gas-injection.com/lpg-gas...hnologies.html

for a more detailed explanation of the challenges of injecting liquid lpg.....

fyi,

steve

[ghosthunter]

niky,

BTW, what car and engine are you installing it in?

Niky's car is a Ford Lynx RS 2.0L

[dencio1976]

niky,

I am really curious how they are able to use your stock injectors to feed propane into your intake manifold. The stock injector only handle liquid fuel (not gas like lpg), unless they propose to inject liquid lpg through the same injector. The pressure requirements for liquid lpg would mean that the injector must handle upwards of 300 psi!

I have been researching and only GTI in Australia has developed such an injector and it has to replace your stock injectors! I suspect they will use an ordinary mixer to feed your intake manifold and use an emulator to "fool" your injectors when operating on lpg. That way no extra vapor injectors, no extra holes!

Sequential Gas Injection usually requires vapor injectors in each cylinder, its best to find out exactly what hardware you are getting, you may be paying more than you need to.

BTW, what car and engine are you installing it in?

regards,

steve

since last time medyo nagaral ako ng EFI and been troubleshooting EFI engines na din. bale yung sa injectors parang gate lang siya with variable opening. i guess with the same pressure of LPG(or required pressure of LPG to run like gasoline) running across the rail, magagamit niya din yung injectors used for gasoline and then magagamit din mga sensors for feedback na din. i guess trabaho na ng kasamang ecu yung trafficing ng fuel whether it is to be gasoline or LPG.

mas simpler conversion nga ito as compared with drilling a hole in your intake manifold. meron nga din kasi ako narinig na conversion that uses a seperate injector and drilling in the manifold is required.

pero curious nga ako sa capability ng ECU that comes with the kit. para din kayang afc with particular a/f mix at different RPM points? pano tuning nito?

hindi pa din kasi namin napush yung isang sentra namin lagyan ng SGI LPG kasi hindi pa tapos yung taxi franchise.

[dencio1976]

and after a few months of research and testing.. ito find ko regarding our taxis equipped with carb type LPG kit.

1. versus an SGI kit.. in theory, since ala pa ako SGI equipped taxi, masmaganda ang SGI since ang pasok ng fuel (LPG) is based na din on sensors particullarly your TPS (talagang according ito sa depth ng tapak mo sa pedal)

as opposed to carb type kits, umaasa ito sa vacuum ng engine wherein the adjustments to the kit is fixed unlike for an SGI kit where your injectors vary the opening for LPG flow.

2. The adjustments made to the LPG kit vary upon the condition of the engine. compression nito, then yung opening para sa air flow. what we did experience was valve seals rupturing though. since taxi drivers mostly go for taxis na matitipid ang LPG, tune ang kits with a lean mix. which(as ive researched and experienced) mainit talaga. lalo na kung bibigatan mo pa ang paa mo sa throttle, chances are mas lalo pa magiging lean ang mix sa biglaang tapak ng pedal. ganun pa naman ang mga taxi lalo na't nagaagawan ng pasahero.

Pero so far maganda naman ang experience namin with LPG kits. More than 1yr na rin. That is since aug of 2006. We've had multi crashes and 2 accidents na medyo matindi na pati bubong e nawala na sa porma. One hit a mmda barrier sa may malapit sa airport area. Pero never experience explosions. Puro chismis lang asar! Then wala pa din kaming mga medical related experience ng bad effects of it. Yung garahe namin is semi closed siya and wala pa naman tama sakin.

I have yet to see one explode. Hay sana lang yung magcocomment ng masyado regarding LPG e yung may experience talaga para hindi nakakaasar basahin. Puro walang factual basis kasi e.

I used to hear a lot of chismis from our drivers kaya napatagal talaga kami sa conversion nun kasi naging hesitant si itay because of that. Matagal tagal na din kasi ang LPG kits dito sa pinas e. more than 4-5yrs na rin ata.

bale 64 units of taxi with LPG kits. pang 65th namin is SGI sana. and still adding.

peace!

[carbomb]

Pero so far maganda naman ang experience namin with LPG kits. More than 1yr na rin. That is since aug of 2006. We've had multi crashes and 2 accidents na medyo matindi na pati bubong e nawala na sa porma. One hit a mmda barrier sa may malapit sa airport area. Pero never experience explosions. Puro chismis lang asar! Then wala pa din kaming mga medical related experience ng bad effects of it. Yung garahe namin is semi closed siya and wala pa naman tama sakin.

I have yet to see one explode. Hay sana lang yung magcocomment ng masyado regarding LPG e yung may experience talaga para hindi nakakaasar basahin. Puro walang factual basis kasi e.

we can all provide stories to tell and i can assume na heresay and theories without basis yung mga cnabi mo not unless you can provide us some proofs like news photos or police reports. di ba sabi mo bumangga yung mga taxis nyo? so sana na news o kahit papano may reports regarding sa incident na yon kc nga sabi mo mulit crashes and 2 accidents na matindi? so those incidents should be documented dapat for insurance purposes.

[ssalonga]

slightly OT: if this goes on, we actually might have enough people to form an auto-LPG users EB.

Ghost,

Hehe, that would be great. Tamang tama, ready na yung 1985 Mercedes 200 autogas ko for roadtest and viewing!

Bring it on!

regards,

steve

[dencio1976]

slightly OT: if this goes on, we actually might have enough people to form an auto-LPG users EB.

ahehehe! pasama ako dito!

im always up for learning new things about our cars.

[ssalonga]

hi steve, thanks for the info and don't worry you will hear a lot from me he he!

BTW, i just came from Green Autogas and inquired about your application, Sharon Siy the proprietor quoted an Aldessa venturi kit for the 3K/4K engines at P23T installed. It shouldn't take more than a whole day to do......


FYI.

regards,

steve

[eyshmechanic]

[quote=ssalonga;985326]BTW, i just came from Green Autogas and inquired about your application, Sharon Siy the proprietor quoted an Aldessa venturi kit for the 3K/4K engines at P23T installed. It shouldn't take more than a whole day to do......


where is this green autogas? tnx a lot steve

[impulzz]

where is this green autogas? tnx a lot steve

sa ortigas auto depot, katabi ng BBPD ortigas.

[ssalonga]

where is this green autogas? tnx a lot steve

eysh,

Green Autogas has closed out its Julia Vargas outlet and will be relocating to Mindanao Avenue in QC by next week. Meanwhile, I believe she is working out of her residence garage. You might try these celfone numbers:

0917 854 0524 or try 0917 546 7000 and ask for Sharon. Tell her steve gave you the numbers.....

regards,

steve

[eyshmechanic]

[quote=ssalonga;985367]eysh,

Green Autogas has closed out its Julia Vargas outlet and will be relocating to Mindanao Avenue in QC by next week. Meanwhile, I believe she is working out of her residence garage. You might try these celfone numbers:

0917 854 0524 or try 0917 546 7000 and ask for Sharon. Tell her steve gave you the numbers.....

what a coincidence, i just read the previous threads and i found out na ***y daw si sharon he he joke lang naku baka maraming magtext kay sharon nyan!
thanks for bothering steve.

[ghosthunter]

what a coincidence, i just read the previous threads and i found out na ***y daw si sharon he he joke lang naku baka maraming magtext kay sharon nyan!
thanks for bothering steve.

OT: I think there were some pics posted of Sharon on this thread or on a parallel thread. I find her more cute than ***y.

[niky]

Thanks for the heads-up Steve... I'll take pics and find out for sure when I go there.

I have an extra manifold that I can use if they really need to do some boring to install injectors, but I'd rather not... it lacks the variable intake hardware that gives my car its midrange grunt (it's from a 626).

So far, this is still somewhere between pie-in-the-sky and actual conviction-to-buy. I'm 100% sure I want it, 80% sure it will be practical, but only 30% sure I can pay for it.

[ssalonga]

what a coincidence, i just read the previous threads and i found out na ***y daw si sharon he he joke lang naku baka maraming magtext kay sharon nyan!
thanks for bothering steve.

I don't think sharon would mind the calls if they were really looking for a good conversion kit! After all, she is quite a business woman who knows her stuff! I think her new place in Mindanao is also an autogas filling station!

cheers!

steve