CNG conversions?

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dieseltech09

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is this for the NG only conversion or would this also apply to the bi-fuel conversion?

Yes it is also for the Bi-fuel
For tax years beginning before January 1, 2015, a one-time income tax credit is available for 50% of the incremental cost of purchasing a new original equipment manufacturer AFV or converting a vehicle to operate on an alternative fuel. The state also provides a tax credit for 10% of the total vehicle cost, up to $1,500, if the incremental cost of a new AFV cannot be determined or when an AFV is resold, as long as a tax credit has not been previously taken on the vehicle. Equipment used for conversions must be new and must not have been previously used to modify or retrofit any vehicle. The alternative fuels eligible for the credit are compressed natural gas, liquefied natural gas, hydrogen, and liquefied petroleum gas (propane). Tax credits may be carried forward for up to five years. (Reference Oklahoma Statutes 68-2357.22)

CNG Conversion loans through Allegiance Credit Union
http://www.allegiancecu.org/loans/auto-loans/cng-conversion-loans.html
 

dieseltech09

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My employer has a CNG vehicle lease program in place for their employees at very attractive rates. I currently have a 2012 NGV Honda Civic on order that should be here by the end of the month. What one tank costs me in my Yukon Ill be able to for a long time in the NG civic.
 

TerryMiller

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Back many moons ago, while on the farm, we ran a lot of vehicles on LPG. That compressed gas was hard on engine valves and such, but they were older engines. Is that still a problem with today's engines and with CNG?

It isn't likely that I will ever get CNG because there just aren't enough CNG stations for where I drive. It might be fine for a daily driver for a metropolitan area, but there is still a lot of this state that doesn't yet have stations.
 

71buickfreak

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Like LpG, CNG is dry, which is the only thing that could be considered "hard" on an engine. Both are much cleaner, so the cylinders stay clean, no gunk to clog them up. You can burn a valve pretty quick if you have a manifold gasket leak because it is a dry fuel, there is no lubrication or cooling from the fuel itself. In a modern engine, that is not as much of a concern as the oiling systems and fuel injection are much better. Also, unlike most propane conversions done on old farm equipment, CNG conversion typically leave the gasoline system intact, so you can run both, limiting any issues.

Most CNG conversions suggest hardened valve seats and valves. I honestly can't think of a modern engine that would not have a hardened valvetrain as unleaded gas is hard on them as well. The real issue is heat, and as I said earlier, the dry fuel is the issue. Most of the Propane conversions are carb replacements, which leads to uneven distribution, which can kill the valves. However, most modern high quality kits replace the injectors with CNG units and they are able to maintain the same and sometimes even cooler valve seat temps. If I were doing a CNG retrofit on an older carbed engine, I would convert it to injectors rather than a carb conversion. For a modern engine, it really is not much of an issue as long as you are not using a cheapo kit that requires tapping the intake. It needs to replace the OEM injectors.

I have had several LPG rigs, mainly air compressor for hi-pressure media blasting. Carb conversions. I ended up switching them back to gas for logistical reasons.
 

dieseltech09

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It isn't likely that I will ever get CNG because there just aren't enough CNG stations for where I drive. It might be fine for a daily driver for a metropolitan area, but there is still a lot of this state that doesn't yet have stations.[/SIZE][/FONT]

Not yet but they are coming

Compressed Natural Gas (CNG) Fueling Infrastructure Development
The Oklahoma Legislature intends to increase the amount of CNG fueling infrastructure in the state, with the overall goal of having one public fueling station located every 100 miles along the interstate highway system by 2015, and one public fueling station every 50 miles by 2025. The Department of Central Services Fleet Management Division may take steps to reach this goal by collaborating with private entities to build CNG fueling infrastructure. (Reference Oklahoma Statutes 74-78f)

You would be surprised by the number coming online this year. Check out www.cngnow.com for a map of fill stations in Oklahoma
 

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