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Subaru engine in fork-lift truck.
Posted 04 August 2003 - 03:02 PM
The original part number was visible on the T-belt so I checked it out on my PC. It is a two cylinder 600cc, carburated Subaru engine which is also used in a very small delivery van / mini bus we had here (Benelux) in the years around 1987.
This specimen is rebuild and runs on liquid propane gas.
Posted 06 August 2003 - 01:27 AM
Posted 06 August 2003 - 01:53 AM
Posted 06 August 2003 - 04:43 AM
I guess Subaru is the only make here who has no diesel engine.
Posted 31 August 2003 - 06:04 AM
I am interested in information on running on LP gas.
I know from personal experience that to convert some other
brands/models (Dodge 3.9L in a van) all it takes is to feed
regulated gas (20psi) into the fuel line!
Could it be this easy? I know there's cold weather issues
but how about fuel econ? Gasoline is up around $1.70/usg
here now and I think I remember that LP is usually about
1lb=1gal of gas. I can get 20lb of LP for like $8 (40c gal
Thanks in advance for info.
Posted 01 September 2003 - 09:18 AM
Posted 01 September 2003 - 10:43 AM
Posted 01 September 2003 - 10:48 AM
The major parts are:
- DOT Highway-approved tank -- this is NOT just a barbecue tank!
- High-pressure line. About $3/lf
- Lockoff unit. Impco combines both the lockoff and filter features in their VFF30 vacuum-operated unit, which can be had on eBay for about $20 + rebuild kit for $10, or you can buy it new for about USD$60. Electrically-operated lockoffs are also available, as are separate filter unit, but the VFF30 is cheap, ubiquitous, sturdy & reliable.
- Converter/Regulator. Impco Model E is the standard of the industry in the US. eBay prices run around $30-70 depending upon conditiion. Plumbs into the heater hose to use engine heat to vaporize the liquid fuel into a gas, and has a sensitive two-stage pressure regulator to feed the . . . .
- Miixer (carb). Many manifold and air filter adapters are available.
- For a "modern" closed-loop (feedback controlled) system, you'll want to use a std O2 sensor and TPS, and an electronic controller that modulates the Model E's output to control the fuel mixture more accurately. But a few million of these setups are running around without electronic controls, so it's not really necessary. Just a bit easier to tune. The whole electronics package can be had for under USD$200.
Trying to get good info in LPG conversions is like pulling teeth. I finally bought a bunch of old Impco catalogs.
Posted 01 September 2003 - 11:00 AM
Posted 01 September 2003 - 05:36 PM
Posted 19 February 2004 - 11:02 PM
Originally posted by Hondasucks
Hmm, I should convert the 4x4 over to Propane.... I suppose with a different orofice in the mixer you could run CNG
Off-road folks are snapping up a lot of the older LPG equipment, it seems to have really caught on (again).
CNG tanks are pretty expensive, but the rest of the equipment is pretty std stuff.
I bought an IMPCO Model E vapouriser/regulator by mistake, on eBay last summer, and I'd make you a heck of a deal on it if you want it. But unless you can get CNG filled really cheap where you are, I think you should consider LPG instead, which is generally easier to obtain.
For a Subaru, I'd think you'd need about a CA100 or CA125 mixer ("propane carb"), a Model E or Model J regulator, and a VFF30 filter/lockoff. About $200 or less for all three. Add some high pressure line ($3/lf) and a tank (the hard part) and the rest is just fine tuning.
Add an O2 sensor and another $200, and you can buy an electronics package that will auto-adjust the mixture on-the-fly.
For dual-fuel use (ie, running on propane or gasoline), expect about 10-15% less MPG, and about that much reduced power when running on propane: propane has less heat energy per unit volume than does gasoline or diesel.
However, if you went to a single-fuel design (run on propane only) and modify the engine (raise the compression to better utilize the higher octane of propane) and/or advance the ignition timing, you can almost achieve fuel economy and performance on par with gasoline.
Oh, and your oil lasts "forever". Doesn't get black.
Note that I have not actually done a conversion -- I've merely done a lot of haphazard research on the topic in the last year, and have bought a bunch of LPG conversion parts and pieces for the day when I will get around to doing one, probably on my next fullsize PU. I've got VFFs, Model Es, and a couple of 425s: everything except the electronics pkg and tank and fuel line, enough to do two conversions.
Oh, and I've got one CA300 mixer that I'll never use, if someone wants it cheap. Too big for a 4 cyl.
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