Auto-LPG Conversion Thread

[kapitan88]

Mine is set to about 18deg. (Marking is only up to 15, lampas pa ko sa 15deg, around 18 na siguro). BTW, i run only on LPG, pero i have the timing gun in the trunk lang para if i would need to revert the setting back for petrol.

My LPG line is fed directly in 1 of the carb's feed, so i dont have a mixer on top. On neutral, i can easily rev more than 5K rpm, but if im running, ang tagal din bago ma hit ang 3k rpm (max na ito).

correct me if im wrong, pero ang tingin ko pag advance masyado ang timing, ang power band is nasa early rpm (in my case up to 2.5K lang * 18deg), pag binabad ko pa lampas ng 2.5K, ang tagal na before ma reach yung 3k rpm. Not sure if it has anything to do with my settings, pero yan ang observation ko lang.

Although I don't suggest this...

You can adjust the ignition timing. Advancing it by 5 degrees can get you better performance under LPG. But this can also result in rough running when using gasoline.

[niky]

I was trying to overtake a van last night and to my surprise, my car was having a difficult time overtaking it and to think I was only going at 40 kph. I later realized that my car can barely go past 2500 rpm. I tried it on gas and revved up to 4k rpm and everything was fine. When I switched back to lpg and revved it above 3000 rpm, the engine seems to be limited to below 2200 rpm. The engine sounded as if it was choking or similar to that when you try to flood the carb with gas and it was running rough. What could be the culprit here? My car is a Corolla with a venturi kit.

SGI type kit? I have similar issues when it's really cold out or when I've been sitting in traffic too long. i think the kit gets too cold and it affects power delivery. But whatever you find out, please share the solution with us. Changed my coil and retuned... helped a lot, but it still occurs from time to time.

[crayz]

Is there LPG kit available for a E36 BMW 325i?

[dragonmate]

Is there LPG kit available for a E36 BMW 325i?

Try Tartarini. And let us know how it worked out.

[crayz]

Try Tartarini. And let us know how it worked out.

i checked tartarini website.. 72K for a six cylinder engine wow too pricey

after checking this website
http://www.lpg-kits.com/bmw.htm
[SIZE=3]
[SIZE=2]I just ne[/SIZE][/SIZE][SIZE=2]ed to find a reasonable priced Sequential Gas Injection Kit[/SIZE]

[ghosthunter]

Is there LPG kit available for a E36 BMW 325i?

You can try checking the following:

AUTO-LPG Installers Contact Information
http://tsikot.yehey.com/forums/showthread.php?t=50159


Give them a call and inquire on the prices of their kits.

[vinj]

Pricey depends on how often you use your ride and its FC. I broke-even on my Altis after 1 year and a half (conservatively) with my 39K SGI kit from Greenfuel.

[dragonmate]

Has anybody here had experience selling his LPG-equipped vehicle? With great reluctance, I may have to let go of my CRV very soon. Would appreciate some tips.

[aejhayl17]

Has anybody here had experience selling his LPG-equipped vehicle? With great reluctance, I may have to let go of my CRV very soon. Would appreciate some tips.

just informed the possible buyer that the car is LPG kit equipped though i think it may not raise the selling price.

[dencio1976]

regarding ignition timing, i set it to normal how i would set it on gasoline at 10deg on a 2E (vac disconnected) about 15 when connected.

since the LPG can go to as high as 20+ degrees on normal tuning, i instead take the advantage of leaning it out a bit more for fuel economy. more air equal more heat therefore not requiring more advanced ignition timing.

but this tuning can only go for about 3k RPM recommended.


works best if it's for pure city + traffic driving. not for highway definitely.

[rorymabangis]

whats a colder spark plug for a ngk bp5es? thanks for your reply

[kikoteng]

Hi.

that would be ngk bp6es.

whats a colder spark plug for a ngk bp5es? thanks for your reply

[vinj]

I just got last Saturday from Banawe at P90*:

NGK BKR-Gas for LPG and CNG vehicles. Difference is the thread/screw end is smoothend or does not reach all the way to the base of the side electrode and the center electrode tip is made of a different material from that used in the standard BKR plugs (couldnt find much details yet).

[niky]

I just got last Saturday from Banawe at P90*:

NGK BKR-Gas for LPG and CNG vehicles. Difference is the thread/screw end is smoothend or does not reach all the way to the base of the side electrode and the center electrode tip is made of a different material from that used in the standard BKR plugs (couldnt find much details yet).

Are they the same spec as the common BKR6E-11 plugs? My car uses those.

Enjoying LPG at the moment... managed to use almost all of my tank... drove 299kms on 38 liters of LPG from a 45 liter tank (so sue me... my car is a 2 liter, and traffic sucks)... it was only in the last 10 kilometers that the car started acting weird... not enough fuel pressure to drive over 3000 rpm, but idle was stable and running below that was okay. Merely had to advance my timing 12 degrees over stock (around 20+ degrees now... :hysterical: ) to stabilize it...

[vinj]

Its quoted to replace the BKR6E-11 amongs some. It has no heat range specified though and you have to gap it to 1.1 if ever.

I also use BKR6E-11 or BKR6E GP as well.

Hey, 7.8km/L isn't bad given the kind of car you have. I'll gas up later this week to find out my FC with the new plugs. Performance-wise, engine seems to be happy with it; the car reached an indicated 190kph at 6K rpm on a generally level road.

BTW, NLEX seems to have switched speed camera cars, it was an beige/grey unmarked Crosswind XT i saw staking out speeders on the hot spot in Bulacan.

[niky]

Its quoted to replace the BKR6E-11 amongs some. It has no heat range specified though and you have to gap it to 1.1 if ever.

I also use BKR6E-11 or BKR6E GP as well.

Hey, 7.8km/L isn't bad given the kind of car you have. I'll gas up later this week to find out my FC with the new plugs. Performance-wise, engine seems to be happy with it; the car reached an indicated 190kph at 6K rpm on a generally level road.

BTW, NLEX seems to have switched speed camera cars, it was an beige/grey unmarked Crosswind XT i saw staking out speeders on the hot spot in Bulacan.

It's actually around 7.6 to 7.7... I drove about 1 km straight on gasoline on one trip within that, and I usually subtract about 5-10 kms from my calculations to account for the 100 meters or so I drive on gas before I change, but lately, I've been changing after just ten meters or so... since I've finally stabilized the idle. I estimate my fuel economy on gasoline in that type of driving would be around 8-9 km/l... still saving about 1.5-2 pesos per kilometer. If it's closer to 8, it'll be a saving of over 2 pesos.

[eikichi]

Check the following:

-LPG tuning (might be too rich or too lean)
-air filter (might be dirty and clogged)

What to do:

-replace air filter
-retune auto-lpg kit

There were times when I also experienced having the same problem with gas and I would shift to LPG and it would go away. Whether I use gas or LPG, when my car won't have any power or when it just won't go above 2500 rpm, I would shift to the other fuel source and everything would be fine again. I tried having it checked by my cousin and he found out that too much air seems to be the causing the problem. Replaced my cone filter with a new one already but it still persisted. Tried revving the engine around 3k rpm and it would suddenly limit the power back to sub 2500 rpm regardless of how hard you step on the accelerator pedal. Retuned the lpg kit multiple times but still in vain.

What he did was to put a piece of cut GI sheet and placed it in the adaptor between the air filter and throttle body. It partially blocked the air passage into the throttle body. After putting this piece of metal, there was no recurrence so far. I know that air doesn't go in as freely into the throttle body anymore but at least it no longer happens to me even if I let the engine reach up to 3k-3.5k rpm.

Is there any bad effect for this? Need your inputs.

[aejhayl17]

what would be the best LPG kit for an 04 altis 1.6? how much would be the damage? and would it cost me extra cash for a "donut" type tank?

what would be the gains and lost?

and for efi LPg equipped cars, diba self adjustment na ang timing/air-fuel mix unlike sa carb engines? or somehow, i need to manually adjust it if rough running has occurred?

thanks in advance. just want to know more about this auto-lpg since its the era of alternative fuels.

[ghosthunter]

what would be the best LPG kit for an 04 altis 1.6?

depending on what is available on the market and installer:
-SGI-LPG kit
-Venturi with emulator kit

how much would be the damage? and would it cost me extra cash for a "donut" type tank?

SGI kits typically cost around P40K for your car. Venturi with emulator kits would probably cost P24K.

Donut tanks cost extra.

Exact pricing depends on the installer.

AUTO-LPG Installers Contact Information:
http://tsikot.yehey.com/forums/showthread.php?t=50159

what would be the gains and lost?

and for efi LPg equipped cars, diba self adjustment na ang timing/air-fuel mix unlike sa carb engines? or somehow, i need to manually adjust it if rough running has occurred?

SGI kits run like your EFI system. It can manage near stock performance and fuel mileage. (with 5% of stock) Downside, tuning is done by the system's installer. If shop closes, it can be a problem.

Venturi kits act like carburated systems. There is some performance reduction and less fuel mileage than stock. (within 10% of stock) Downside with venturi kits is it's sensitive to the condition of your air filter and air pressure. Driving up to Baguio results in rough engine and reduced power.

[aejhayl17]

^^ anu ba major difference ng venturi at SGI? bakit mas mahal ang SGI?