propane on 460 ?
Elder User
Joined: Jan 2000
Posts: 966
Likes: 2
From: Crooked River Ranch, OR
Yes it will give you more power if you bump the compression significantly. The problem is most people who use propane set up a duel fuel system which drastically limits the amount of compression you can run with pump gas as your alternate fuel. If I were to run just propane I'd put my compression up around 12.5 to 13 : 1 ratio
Deen
Deen
Elder User
Joined: Jan 2000
Posts: 966
Likes: 2
From: Crooked River Ranch, OR
Your going to need a regulator, propane carburator, large propane fuel tank, various lengths of high-pressure hose. I'd contact one of your propane suppliers in a large city...they should have the info you need.
I used to work alot on propane powered forklifts at a sawmill/plywood plant. The only problem I saw from running propane (besides about a 10% loss in power if you don't raise your compression) is that the regulators would on rare occasion freeze up and stop fuel flow to the carb. The propane regulators use engine coolant to heat the regulator but the water passages are fairly small and can plug-up if your cooling system is not clean and up to par.
Deen
I used to work alot on propane powered forklifts at a sawmill/plywood plant. The only problem I saw from running propane (besides about a 10% loss in power if you don't raise your compression) is that the regulators would on rare occasion freeze up and stop fuel flow to the carb. The propane regulators use engine coolant to heat the regulator but the water passages are fairly small and can plug-up if your cooling system is not clean and up to par.
Deen
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Cargo Master
Joined: Mar 2004
Posts: 2,220
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From: CA
I've Seen A Twin Turbo Natural Gas Engine And It Made Nearly 1.5 Hp Per Ci. Only Bad Part Is It Takes A Lot More Money To Get These Gains Than You Could With Gasoline. You Would Think That With Emissions Standards Cng Would Catch On, But That Would Put A Cramp In Gasoline Sales. Therefore.....ain't Happenin'
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5th Wheeling
Joined: Oct 2001
Posts: 35
Likes: 0
From: Adelaide, Australia
I am currently building a 460 to run on propane at the moment.
The compression ratio's (12-13.5) sound high but it depends on the mix of Propane/Butane (the more Butane the higher the octane)
Here in Australia the max compression is around 11:1.
I am trying to decide to run a pair vapor mixers or the lpg injection computer I have.
The compression ratio's (12-13.5) sound high but it depends on the mix of Propane/Butane (the more Butane the higher the octane)
Here in Australia the max compression is around 11:1.
I am trying to decide to run a pair vapor mixers or the lpg injection computer I have.
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propane on 460
Propane does not have as much BTU content as gasoline, only about 85%, so there is s reduction on power. guy at work has a motorhome with a 460, dual fuel conversion on it. He says not bad on the level but slows down on hills and rather pokey tp pass anything. Higher fuel consumption on propane, but offeset by lower fuel costs. Conversion equpment arounf $1500 so gotta do a lot of drving to make it up, even though emissions lower and easier on engine overall. Also does not start and run well in cold weather. Hope this helsp
Post Fiend
Joined: Jul 2003
Posts: 11,945
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From: Spokane, WA
Originally Posted by j.m. ray
it will run but the valves wear fast .the replacement valves for lp retail for 45 bucks each. have seen alot of head rebuilds on lp.but the oil is always clean.like new.
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