TriniTuner.com  |  Latest Event:  

Forums

Trinituner People: My CNG Experience

Tuning advice, problems and troubleshooting

Moderator: 3ne2nr Mods

Nissan910
Ricer
Posts: 28
Joined: June 5th, 2008, 10:19 am

Trinituner People: My CNG Experience

Postby Nissan910 » May 25th, 2009, 11:44 am

this thread is for CNG users to share their experiences and for non CNG users to get a sense of the pros and cons of the system.


As a recent CNG user, i must say that i am very impressed with the CNG kit in my car. With a 2000 cc engine, it is $14 dollars to fill the cng tank, which gives me enough power to do general driving. When i need more power, i simply flick the switch, and the engine gives full power with the premium gas i use.

It is an excellent mix of power and economy.

They are adding more CNG stations, which should make the fill up process more convenient. On the East West corridor, there are CNG facilities in the new Beetham Gas Station, the Gas Station by Maritime Plaza, by the Kay Donna Gas Station and also at Automotive Components ltd in Arima. Before this experience i thought that CNG tank takes a long while to fill, however it is very quick to fill, just as quick or quicker than filling up a normal tank of gasoline. With one tank of CNG, i can get 100 miles.

It would be good to get a sense of how many CNG users are out there, though of course many of them would not be on this forum. I am planning on writing to PEake's Gas Station in Cocorite to lobby them to install a CNG facility for the users in the West.

I am unsure of how compatible CNG kits are with newer cars with higher compression engines, but in this belt tightening era, a CNG kit can be a good investment.

It is also said that CNG works better with manual cars.

Advantages
Huge savings
Nice mix of power and economy
Easy switch between gasoline and CNG
Much cleaner gas, with a higher octane rating (130),
Less Emissions

Disadvantages
Initial Cost
Loss of some trunk space
Approx 10% less power on CNG
Restriction of about 60% of airtake which is necessary for the CNG kit to work properly. This can have a slight impact on the normal gasoline performance.



Regarding safety of the CNG system:

"In today’s world there are constant advances in all aspects that concern security in case of automobile accidents; in gasoline vehicles the fuel is transported in thin sheet metal tanks that are very fragile when impacted and can explode. CNG is stored in steel cylinders with 6 to 8 mm thick walls; this literally makes it the most resistant component of the vehicle. The steel fuel pipes are also more resistant than the gasoline ones; even if there were to be an accidental breakage or leak, instead of the dangerous gasoline spill on the ground underneath the vehicle, the very light CNG will rise rapidly and dissipate into the air"

CNG Resources

THE CNG OPTION: http://www.indiacar.com/infobank/cngoption1.htm
CNG TUNING How to do it: http://tinyurl.com/q9t4ez

Advertisement
User avatar
sensiman
Sweet on this forum
Posts: 251
Joined: January 18th, 2007, 1:41 pm
Location: Limbo
Contact:

Postby sensiman » May 25th, 2009, 12:26 pm

What's the initial cost?

User avatar
QG
punchin NOS
Posts: 3553
Joined: July 18th, 2006, 9:56 pm
Location: South

Postby QG » May 25th, 2009, 1:00 pm

Nissan910, you have the Laurel HC35 rb20 sohc?

A padna of mines has one with CNG tank with a switch.

Good thread though.

Nissan910
Ricer
Posts: 28
Joined: June 5th, 2008, 10:19 am

Postby Nissan910 » May 25th, 2009, 1:03 pm

Nope, i have a four cylinder 1997 Mazda Cronos

User avatar
QG
punchin NOS
Posts: 3553
Joined: July 18th, 2006, 9:56 pm
Location: South

Postby QG » May 25th, 2009, 1:09 pm

oh okay.

User avatar
wagonrunner
TriniTuner 24-7
Posts: 13181
Joined: May 18th, 2004, 9:38 am
Location: Distancing myself from those who want to raid the barn but eh want to plant the corn.
Contact:

Postby wagonrunner » May 25th, 2009, 1:27 pm

had it in a few vehicles.
1.5 PAY 323GLX
1.5 4G15 carb PBA Lancer
1.6 PAM 323.

tank took about $17 at high pressure, and that was enough to go from la romaine, - chaguaramas, and back to freeport, before i had to switch over.

Only reason i don't re-install it now, is stations are too few, and far between.

User avatar
eitech
30 pounds of Boost
Posts: 2591
Joined: November 11th, 2006, 10:03 am

Postby eitech » May 25th, 2009, 7:09 pm

100 miles ain't much at all

Nissan910
Ricer
Posts: 28
Joined: June 5th, 2008, 10:19 am

Postby Nissan910 » May 25th, 2009, 7:14 pm

100 miles (160 kilometres) for 14 dollars is good for me. Gives approx 60% saving on fuel cost.

User avatar
bushwakka
punchin NOS
Posts: 4350
Joined: August 24th, 2007, 1:02 pm
Location: GPS unavailable

Postby bushwakka » May 25th, 2009, 8:23 pm

yea $14 is rel good.....my only concern is that 10% power loss u talkin abt and the air intake restriction.....never heard of CNG in a subaru either

also, the CNG tank is quite heavy not so? takes up trunk space.....thats a con as well

Nissan910
Ricer
Posts: 28
Joined: June 5th, 2008, 10:19 am

Postby Nissan910 » May 25th, 2009, 8:52 pm

yeah, the 10 % loss is no big thing, because as soon as you need more power, you can just press the switch to get full power on the gasoline.

The air intake restriction can also be overcome, as it should not be so hard to make a device that can open the airflow fully, or restrict it similar to how the throttle plate does turn... just with a press of a button.

User avatar
bushwakka
punchin NOS
Posts: 4350
Joined: August 24th, 2007, 1:02 pm
Location: GPS unavailable

Postby bushwakka » May 26th, 2009, 10:08 pm

^yea i was thinking along that same line......but as simple as it sounds, it may be hard to bring that idea to reality for laymen like me and u? that cud be pioneered into a CNG kit and we cud patent it and make meeeeeelions? wha u say? :lol:

User avatar
vin123
Sweet on this forum
Posts: 341
Joined: August 3rd, 2008, 6:56 pm
Location: 90° N , 0° W
Contact:

Postby vin123 » May 26th, 2009, 10:39 pm

sensiman wrote:What's the initial cost?


Anybody know the answer to this? I'm not sure but I think it's abt 10g's?
But it supposed to be lower with the budget stuff and all?

User avatar
nos_specialist
Shifting into 6th
Posts: 1906
Joined: May 27th, 2005, 10:13 am
Location: Right Here
Contact:

Postby nos_specialist » May 27th, 2009, 10:27 am

cng in an sr20de..wud dat work good?

User avatar
Anil_Sooknanan
30 pounds of Boost
Posts: 2672
Joined: November 16th, 2006, 8:28 pm
Location: Freeport
Contact:

Postby Anil_Sooknanan » May 27th, 2009, 11:00 pm

yea the B14 got CNG and if you don't know it, you won't even notice :mrgreen:

Nissan910
Ricer
Posts: 28
Joined: June 5th, 2008, 10:19 am

Postby Nissan910 » May 28th, 2009, 5:51 pm

Anil, you does do the tuning of the CNG kit?

User avatar
De Dragon
TriniTuner 24-7
Posts: 11398
Joined: January 27th, 2004, 3:49 am
Location: Enjoying my little miracles............

Postby De Dragon » May 28th, 2009, 6:51 pm

My bro-in-law crashed a CNG equipped car a few years ago and the entire car burned down :shock: Also the entire front of the truck that he crashed into :shock: . So I'm not sure about CNG safety.

User avatar
wagonrunner
TriniTuner 24-7
Posts: 13181
Joined: May 18th, 2004, 9:38 am
Location: Distancing myself from those who want to raid the barn but eh want to plant the corn.
Contact:

Postby wagonrunner » May 29th, 2009, 3:34 pm

De Dragon wrote:My bro-in-law crashed a CNG equipped car a few years ago and the entire car burned down :shock: Also the entire front of the truck that he crashed into :shock: . So I'm not sure about CNG safety.

yes is the CNG fault. :|
especially as CNG is even less flammable than gasoline, yuh done know d CNG cause that fire. :|
could never have been any other factor, what the truck was totiing? the general upkeep of both vehicles.

User avatar
bushwakka
punchin NOS
Posts: 4350
Joined: August 24th, 2007, 1:02 pm
Location: GPS unavailable

Postby bushwakka » May 30th, 2009, 11:44 am

De Dragon wrote:My bro-in-law crashed a CNG equipped car a few years ago and the entire car burned down :shock: Also the entire front of the truck that he crashed into :shock: . So I'm not sure about CNG safety.


amm....u do know that even a car equipped with gasoline is still likely to catch a fire and explode following an accident depending on how serious it is and if fuel lines are ruptured or the gas tank punctured right?

User avatar
cacasplat3
punchin NOS
Posts: 4482
Joined: July 29th, 2005, 12:08 am
Location: Where Fuel Is Cheaper Than Bottled Water......

Postby cacasplat3 » May 30th, 2009, 10:12 pm

wagonrunner wrote:
De Dragon wrote:My bro-in-law crashed a CNG equipped car a few years ago and the entire car burned down :shock: Also the entire front of the truck that he crashed into :shock: . So I'm not sure about CNG safety.

yes is the CNG fault. :|
especially as CNG is even less flammable than gasoline, yuh done know d CNG cause that fire. :|
could never have been any other factor, what the truck was totiing? the general upkeep of both vehicles.


instead of being sarcastic....even though i understand your point....i think it would have been better if you had just ask for him to clarify the incident....cuz he didnt give much detail.........



questions: are small tanks available? like about the size of a small SCUBA diving tank?
is CNG compatible with boost?

User avatar
wagonrunner
TriniTuner 24-7
Posts: 13181
Joined: May 18th, 2004, 9:38 am
Location: Distancing myself from those who want to raid the barn but eh want to plant the corn.
Contact:

Postby wagonrunner » May 30th, 2009, 10:52 pm

cacasplat3,
who was being sarcastic? i agreed with the man. :|
can't please some of you all at all.

when a gasoline powered car bursts into flame, how do we feel about gasoline safety? :?

CNG and boost have been used in some buses, but generally the ratio of air to fuel in CNG is not consistent, so that makes it "not tuner friendly".

User avatar
cacasplat3
punchin NOS
Posts: 4482
Joined: July 29th, 2005, 12:08 am
Location: Where Fuel Is Cheaper Than Bottled Water......

Postby cacasplat3 » May 31st, 2009, 11:20 am

^^^^i hear yuh :lol: :lol:


thank for the insight about boost :!:

User avatar
Anil_Sooknanan
30 pounds of Boost
Posts: 2672
Joined: November 16th, 2006, 8:28 pm
Location: Freeport
Contact:

Postby Anil_Sooknanan » May 31st, 2009, 8:12 pm

we tuned and repair the CNG for our self and boy it does wok. it starts same speed as the gas. there are a few tricks to it. i rewired it to switch over without the car cutting off using a 5 pin relay, installed a lock off valve when fueling up. so when you see me up on the highway doing it and you feel i racing yuh :roll: with d cold breeze is only $16 i'll be putting :lol:

User avatar
wagonrunner
TriniTuner 24-7
Posts: 13181
Joined: May 18th, 2004, 9:38 am
Location: Distancing myself from those who want to raid the barn but eh want to plant the corn.
Contact:

Postby wagonrunner » May 31st, 2009, 10:25 pm

^^^
why did your car have to cut-off to switch over in the 1st place?
from cng to gas was more or less instant with the rpm up, and from gas to cng, same high rpm, and wait for the engine to come close to base idle (400rpm), then switch over.

User avatar
Kongorealm
I LUV THIS PLACE
Posts: 983
Joined: May 13th, 2008, 12:37 am

Postby Kongorealm » June 7th, 2009, 11:19 am

This thread is very informative for those who would like a review of the CNG System but Nissan910 could if at least stated how much it cost him and where it was installed because in these times that's a big factor for most people...

User avatar
Anil_Sooknanan
30 pounds of Boost
Posts: 2672
Joined: November 16th, 2006, 8:28 pm
Location: Freeport
Contact:

Postby Anil_Sooknanan » June 7th, 2009, 8:43 pm

we got our kit used of 5K the reason is because the owner could not tune or get it properly tuned.

User avatar
Kongorealm
I LUV THIS PLACE
Posts: 983
Joined: May 13th, 2008, 12:37 am

Postby Kongorealm » June 9th, 2009, 9:49 am

Where you able to get it tuned and how has it worked for you?
Would you recommend the product since you purchased a used one?

User avatar
De Dragon
TriniTuner 24-7
Posts: 11398
Joined: January 27th, 2004, 3:49 am
Location: Enjoying my little miracles............

Postby De Dragon » June 9th, 2009, 11:45 am

bushwakka wrote:
De Dragon wrote:My bro-in-law crashed a CNG equipped car a few years ago and the entire car burned down :shock: Also the entire front of the truck that he crashed into :shock: . So I'm not sure about CNG safety.


amm....u do know that even a car equipped with gasoline is still likely to catch a fire and explode following an accident depending on how serious it is and if fuel lines are ruptured or the gas tank punctured right?

Not from a "typical" front end collision! There was no injury to himself and the car was not that badly damaged( relatively speaking ) I'm not saying that gas powered cars can't catch fire/explode,but merely giving an experience that I know of with a CNG equipped car.

User avatar
skylineGTR55036018
Ricer
Posts: 24
Joined: June 25th, 2008, 1:38 pm
Location: In The Bo0sted Lane
Contact:

Postby skylineGTR55036018 » June 23rd, 2009, 9:29 pm

cng takes a toll on your engine seals also...

User avatar
wagonrunner
TriniTuner 24-7
Posts: 13181
Joined: May 18th, 2004, 9:38 am
Location: Distancing myself from those who want to raid the barn but eh want to plant the corn.
Contact:

Postby wagonrunner » June 23rd, 2009, 9:51 pm

skylineGTR55036018 wrote:cng takes a toll on your engine seals also...

pray tell, which seals?

User avatar
mossman
Posts: 0
Joined: May 23rd, 2008, 10:11 pm
Location: Trincity

Postby mossman » June 25th, 2009, 11:51 am

could the ppl that actually have it installed tell me where they did it and how much it cost please :?:

Advertisement

Return to “AUTOMOTIVE TECH”

Who is online

Users browsing this forum: No registered users and 5 guests