jbgoodtrader

I remember a Pulling Tractor at Twin Creek Tractor Pulls here in Ontario back in the 90's called "Bad Medicine".

They took a V8 Caterpillar diesel & converted it to run on alcohol. The thing was wild! Full pulls everytime & appartantly on less than 20psi boost, while the diesel smokers were running over 60psi. And no smoke!

They did the same type of thing. Head work with spark plugs, ignition system, etc.

John Good

Raspy

infidel,

That's the conversion for 1 cu ft of liquid, not 1 cu ft of gas. I don't know how many cu ft of gas makes one gallon of liquid. After that conversion the liquid to gallons conversion would make sense.

John

Smkndzl

you can take a diesel and run it on diesel for pilot injection and NG for for main injection and no spark plugs. with the price of diesel now, it could be a good thing. of course the fuel has to be in Liquid state. CNG takes up to much space.
Cummins/Westport does these conversion and are being place in Kenworths in the ISX, check out the site.

http://www.westport.com/

sixb

You can run cng with diesel, Questar gas does it in UT. A truck driver filling a Questar big rig next to my f150 a few months ago said they run it at 80 percent diesel and 20 percent cng, he also said it gives it about 100 more hp. Oh yea I'm paying .63 agge here in UT for my f150

capt.Ron

So tell me...Are you paying .63 per gal in UT??

sixb

Ok, I'm paying .63 agge in UT

capt.Ron

Do you get it from Questar??

sixb

Yes, there are five stations within about 10 miles of me. Also you can put a home fueling unit that the feds. will help pay for, and also they will help pay for some conversions. There is some good info. on cngchat.com

sixb

I don't know the btu but cng at our pumps is 130 octane.

logskidder

So is this a CNG injected diesel or something?? sparkplugs and injectors?? Id like to find some info on this.

searcher

From what I understand, it is pilot ignition. The diesel ignites as always and that simultaneously ignites the gas. I read that you could run on 20% diesel. If CNG is as good for the engine as propane was then our engines should last forever. We had 3 propane tractors and a big flatbed international hay hauler when I was a kid that outlasted every vehicle on the farm. That hauler stayed on the road delivering hay to several race tracks across the south. I was always told that propane was the best fuel for longevity of any engine. I would think that it would be a lot simpler to get an old gasser and convert to CNG than a diesel conversion however.

moparguy

I don't get the chance to visit much these days, I'm involved in a new natural gas field and when I've checked in, don't see much I can add.

I can contribute here though, back in the mid 90's I was on the management team of a major natural gas company that sold cng conversions and filling stations.

A few facts:

NG is sold (usually) in 1,000 cubic foot units or, MCFs. The marketing norm for a cu ft of NG is 1,000 btu's, so 1 MCF has 1,000,000 btu's, equals just over 7 gals. equivalent of diesel.

If you pay $10 per MCF at your house for NG, and had a home fueling station such as a FuelMaker out of Canada, then you have $1.42 per gallon fuel.

And yes, most diesel conversions use the diesel as a pilot fuel, NG is injected into the intake air stream, just like propane,and the diesel compresses and lights off the NG.

Lot's more to the subject, suggest Google for those with NG at the house.

I haven't been involved in a long time, but it usually requires huge tax breaks to get a reasonable payback on a conversion with a home slow fill station. BUT those tax incentives are there.

Good luck, RJR

dieslcruisrhead

Hi guys,
I found this thread through a Google search...

In regards to the safety issue of tanks you guys might dig this video I found...
http://www.natruell.com/safety.html

rednekroper05

wasnt there a truck in dieselpower mags challenge that used a cng/ diesel setup? Im thinkin it was a dmax though.

1-5-3-6-2-4

none of those Nat gas Cats are road engines though. NG are usually generators or as you know compressor stations that burn what they're pumping.