My CNG conversion

[Chosenone]

check this out..first cng fitted by tatarini in the 50's..I believe it is the first in the world

[Enzomatrix]

dun k siao that one is rocket launcher rite

[Chosenone]

one more pics of the early's 50...

[Kianbeng]

You mean to say if I didn't want the box, it will not save me any money?

[Kianbeng]

Wah....if someone were to install such a big cylinder nowadays, it will give extremely good range. ie, 1 time refill can last 600-700km??

[Xuan511]

lol make every trip to the refill station worthwhile =D

 

and u won see cars around u within 10m range, even in a heavy jam

[Genie47]

Last time engine technology not as good as now. That cylinder then maybe 200km. Now with our engine technology with microprocessor control, solenoid valves, cold air intake, MSD coil, can go 700km.

[Kianbeng]

Are these parts you mentioned having any service / replacement intervals? ie, solenoid valve....I guess doesn't last too long?

[Incom]

I guess so, never ask about that. Anyway the partition does not cost that much, i just take it as the plus point of the installation.

 

Cheers

[Genie47]

Solenoid valves must be replaced periodically.

[Kianbeng]

once a year? once every 10k? Can advise service interval and costs?

 

I think it will be very useful information to consider the cost of maintenance of this CNG installation also.

 

Hopefully these serviceable parts are easy to find/replace. Hopefully don't have to go back to installer to replace.

[Genie47]

You still have to go back to the installer for the solenoid valves.

 

Mine are not worn yet. It's been a year since installation.

[Kianbeng]

ok so that means the parts are probably not generic stuff.

[Dirtrider_ak]

How is yr car now any uodates?

[Genie47]

Changed my plugs to BKR6E11. Normal ones. Gapped them to 1.0mm and the afterfires are gone however, if the RPM drops below 1600, it chokes. I assume the ECU compensates by dumping in more fuel to prevent stalling. The CNG ECU blur sotong follow.

 

Then also when switch from petrol to CNG, the car slows to a crawl and cannot create enough torque to move. I free the gears and revv very hard to get it into action and it can go.

 

Clearly a tuning issue.

 

Just read that for CNG operation, idle should be on lambda 1.0 and for everything else from WOT to accelerating (power), 0.83 to 0.85.

 

I'm looking around for a wideband EGO to borrow and fix it in so that Song can do his magic.

 

WOT however must use dyno. Going WOT on the street is a bad idea.

[Friendstar]

Genie,

on hindsight, will u still convert ur car to CNG?

[Friendstar]

Genie,

 

what if i convert my picnic to CNG

 

and know nuts about whatever mods that u mentioned...

 

will i be in deep sh|t with all those stalling problems?

[Genie47]

Yes. Everything is now solved for my CNG running.