shadetree30 Reader
Jan. 9, 2013 4:19 p.m.

Has anybody done or contemplated doing a CNG conversion?

My thoughts would be on a DD or car hauler...

GameboyRMH PowerDork
Jan. 9, 2013 4:25 p.m.

I've thought about it, common in the rock crawling world, you can run dual-fuel by simply putting the CNG carb in the intake ahead of the gasoline carb/efi system and cutting the gasoline.

Knurled UltraDork
Jan. 9, 2013 7:12 p.m.

We're doing them now. The installation isn't cheap but the people who've done it find that the conversion pays for itself in a year or so. Assuming you spend $20k a year on gasoline, anyway. Given the size of the tank required for any kind of meaninglul range, I'd only do it to a pickup. Figure a tank that is 20 gallons-equivalent will take up the width of the bed, and the diameter will be almost the height of the bed. Steel or spun-carbon tanks are available, with the expected tradeoffs of weight vs. expense.

A gallon-equivalent of CNG is about $.80-2.00 depending on if you buy it from a filling station or have a home fill station.

The new systems are neat. They interface with the PCM in such a way that the computer doesn't know that it's firing the wrong injectors. It's kind of like a piggyback but in reverse.

You'll need to log in to post.

Also on Grassroots Motorsports

Podcast Episode 38: Warren Mosler of Consulier Cars

12 hours ago in Articles

Ever met someone who started their own car company? Warren Mosler did, and he talks about it on this episode.

Will We See You This Weekend?

1 day ago in News

We're traveling a lot this weekend. Will we see you along the way?

Who Built the Best Car With $2014?

3 days ago in News

Click here for a review and full results for the Grassroots Motorsports $2014 Challenge.

Buy One, Get One Free

3 days ago in News

Give your friend a subscription and we'll give you one for free for being such a good buddy.

Win Some CRC Goodies

1 week ago in News

We're picking our favorite 30 entries to the Show Us Your Shop Contest so far and sending them some prizes.

Pay It Forward

1 week ago in Articles

Passing your street survival knowledge on to the next generation pays dividends.

Pirelli World Challenge Announces 2015 Schedule

2 weeks ago in News

Next year's schedule includes events across North America at some of the nations's most challenging courses.

OUR SPONSORS

Grassroots Motorsports Magazine

Subscribe Today

Also get your instant access to the digital edition of Grassroots Motorsports Magazine!

Learn More