Quote:
Originally Posted by SAS Harjeev, I too have converted to CNG recently. I'm running an Alto BS3 with a Lovato kit with TAP. It's been installed as an open loop (without the lambda control system). Now regarding to your queries: |
Thanks for replying to my post
Quote:
1. A cylinder is always measured in water capacity. Yours is 65 ltrs and generally at around 190-200 bar you should be able to get around 8.5 kgs when empty. I too have a 65 ltr tank by Lizer
|
Thanks for clarifying this. I was thinking that theres something wrong with my cylinder. 8.5kg is the max that I've been able to fill an empty cylinder. So I guess that this is OK!!! :-)
Quote:
2. Generally the average improves by 40%-45% over a Petrol. I used to get 17kmpl on petrol so I get 25 km per kg on my Alto. I think your mileage of around 13 is good. If you are running a closed loop system, then your mileage might improve further marginally. Ensure you have installed the timing advancer, that way you should not feel much performance drop
|
An advancer is already there on the system and as you've said, I've not noticed any drop in pickup, even if its there its noticeable only slightly.
Regarding the average, I got about 13 initially by now over 869 kms(
this I believe is a more accurate reading) , Ive averaged 15.1 km/kg which translates Rs.1.44 per km!!!
Quote:
3. No clue on the valve of the cylinder. IMHO, please use the one which came with the kit.
|
The valve's the same, we tested a different valve for a similar cylinder of the same make.
Quote:
4. Personally looking that the way the installer wrote the memo, I'm getting a feeling you could have found better installers than this. I cannot help you since I'm in Mumbai, but several others on this forum should be able go guide you.
|
Maybe the bill is a little not upto the mark but installation wise the guy did a good job. I am enclosing some pictures of the engine bay and the boot space!!!
I have driven the vehicle about 1500 kms since the install, and I am petty happy with the performance. No leakage, nothing. ALso I have received the updated RC endorsed with the CNG fittment and an alternate fuel. Now I have my office contacting the insurance company so that the CNG clause, if any, be added on the insurance policy, incase its a requirement.
Quote:
Some tips IMHO:
1. Ensure your spark plugs are clean and properly gapped.
2. Clean your air filter frequently (say every 2000 kms)
3. Don't accelerate hard with CNG at low RPM. Low end torque is reduced when you run on CNG.
4. If possible, change to a marginally thicker grade of engine oil. I am currently running 20w-40, and planning to move to 20w-50 castrol GTX. go semi-synth if possible.
|
Will keep the above in mind. Actually the vehicle will be going to the service station as its been about 9200 kms since the last service and I thing that we'll exhaust 800 kms in about a week-10 days. So will get it service then and tell the SA to do the above.
Hi Guys in Delhi
SAS has answered many of my queries, now NCR bhpians, Advise is needed!!!
Quote:
Originally Posted by harjeev - I read somewhere that in the GM supplied kit they change the rear springs to manage the extra weight. Where do I get that done and how much should it cost (parts/ labor)?
- I wish to get a IInd opinion on the installation. Can anyone recommend an installer, who wouldn't mind giving me unbiased advise!! Really need it!!!
Thanks & Cheers |
Another thing that Ive observed, post the install the vehicle has started to heat more than it used to earlier.
Is this normal???
I mean that earlier the coolant never used to get finished but now I have to add water every couple of days or 200-300 kms???
Is this normal in CNG??
Is there anything I can do, like use a better engine oil or a different brand of coolant???