My CNG conversion

[Genie47]

That one is the mixer kit. IMHO, I would got for the 2k mixer kit if not for the silly intake manifold I have. If your intake parts are all metal construction save for the intake filter box, go for the mixer kit. Lose around 5% power only. SGI kit lose 3%. 5%, 3% to me no difference. 2k vs 3.5k, BIG DIFFERENCE!

 

Might have increased chance of backfire but if you keep the ignition system in tip top shape, reduce spark plug gap. You reduce the chances.

Edited April 24, 2007 by Genie47

[Cyberet]

2k is for the cheaper mixer kit, genie installed the more expensive SGI kit. well, u can look at it this way, it takes longer to break even, but its surpose to be more efficient as well.

 

anyway i think our intake manifold is not plasic

but our intake tube is plastic

[Kianbeng]

Let us know the savings ok.

 

For $3400 installation, I think it'll take quite some time to breakeven this cost. Btw, I noticed there's 60L and 80L tanks.

 

I'm quite keen to get this installed, but not on my M323. On my mum's W210 coz that one drinks petrol mah. Heard from those W210 taxi drivers that 1 full CNG tank can drive around 200KM. And it's cheap.

 

The only drawback is that I'm not staying in Jurong area

[Aucsl]

But from the cng website, its stated that:

*Price of CNG Singapore SGD$1.05/ KG

*Price of CNG Malaysia Petronas SGD$0.35/kg

 

so much different ler

[Genie47]

Gilbert from Melchers (also seen in the closed Ford club forum), uses the mixer kit in his Mondeo Estate. His system also variable intake with plastic manifold. The installers took it out but took two hrs to come back. A backfire blew up the intake filter box. His intake manifold survived.

 

Based on this experience, he advised getting the SGI kit. He was lucky to lose the intake filter box. If the intake manifold goes, that would be worse.

 

So I would say for the regular cars out there with the normal metal intake manifold, the mixer kit is good economical and STILL safe alternative.

[Kiatmobile]

Thank you for the explaination....

 

Do you mean in the case when switching, the car is sluggish?

But it will sluggish for 1-2 seconds?

Also, do you mean that when RPM is below 1.5K, it will sluggish constantly?

[Kianbeng]

oh I see.

 

But tank sizes also will cost slightly different I guess?

 

If need to reduce spark plug gap after installation, that means next time when I send for servicing I need to take note? Otherwise the mechs might just change the standard plugs right?

[Genie47]

SG mah. Ministar must get higher salary. MY MB can do side or under table business.

 

When the CNG in SG Mandai is up, I will pump SG CNG on weekdays. Weekend, go to JB in the morning, wash car, pump CNG, pump petrol.

 

Mwahahaha!

 

Compress or Die! (Shamelessly taken from CamelBak's Hydrate or Die).

[Kiatmobile]

Thank you

[Kiatmobile]

TQ

[Genie47]

There is hesitation. You don't get the torque and the car sort of gives mini jerks. Signs that the ignition system is not doing its job.

 

I have explained earlier, if they had tuned it with the new stock plugs I have, this should be solved. I even gapped them to 0.9mm.

[Aucsl]

wah, sound attractive ler.. can empty tank cng in, full tank out + petrol some more.

[Genie47]

Standard plugs are GOOD! Platinum and all that pretty bad for CNG unless you spend money on the Denso Iridium fine wire tips which doesn't last as long as the normal plugs.

 

Just have to reduce the gap to give better performance. Else spend money on an MSD coil and driver.

[Cyberet]

considering how slow things changes around here, i think conversion would be better for me, cng only vehicles would require more refilling stations

i got 5 more years

i think SGI kit would be more worth it, if after 5 years i intend to transfer to the new vehicle.

[Genie47]

Eh? The W210 E200 NGT CNG tank is not one but 2. Total CNG capacity is 18kg. Maybe they idle the taxi a lot that is why 200km.

 

The 60L tank is around 10kg.

 

The Corolla they converted gave 200km for 10kg.

 

Another thing happened. There is more weight behind so the car handles a bit differently. I found the understeer has reduced a lot. Car can.....DRIFT.

[Dwoon]

Wah.... like that quite dangerous if the petrol to gas change or vice-versa, occurs at high RPM and load leh....

 

The ignition timing seems to be very different since you can even feel it change at low RPMs. High chance can blow engine if the change occurs at high rpm. Even worse if it has forced induction???

Edited April 24, 2007 by Dwoon

[Genie47]

Better check with them if you want to install. Transferring to a new vehicle means you got to evaluate if the new vehicle can take it. There might be technical problems. Then it also means blow away the warranty unless you want to by a Ssangyong. BTW, the Stavic runs on the 6 cylinder SGI kit and runs better than it was on petrol.

[Genie47]

Must let the installer know. They will tune the CNG portion to perfection. Takes some time.

 

The timing part can feel is because I'm still on my 110k km spark plugs.