128 mpg car
Since there wasn't a diesel section I decided to put this here. This was in a Yahoo group.
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diesel
Yup, there is no mystery to building fuel efficient cars. Light weight and small engine displacement can produce amazing mileage.
There IS demand for high mileage, inexpensive cars. I'd buy one for commuting. Why won't the automakers import them from Europe or Asia? Maybe I should go to Europe myself and buy a vintage Citroen 2CV. |
I've heard of this story
I've heard of this story before, and mentioned it a few times on this forum. I originally heard, however, it was popular mechanics, but I could be wrong.
I would be very interested in trying to do something like this. This would be a perfect "around the town" car. Do we have any idea if there are ways to reduce emissions with diesel? I guess running bio-diesel is an option. The downside of this conversion is that the kubota motors are rather pricey. I think I remember seeing one for around $4000 once on ebay. It would be pretty cool though to convert an older car (old honda anyone?) to use a diesel 3cylinder engine and just cruise around town. |
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If I had the time and the money, I'd do it. The title of the dealership would be "Gas Savers." Maybe when I strike it rich I can do it. |
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Re: I've heard of this story
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I would personally love to do something like this. Maybe I'll do this when my engine dies in the n600. Throw a small diesel engine in it... I could get 60mpg EASY in that setup. |
Wow...
Wow...
When I look at this car, all I think of is "1980's version of the future." https://www.rqriley.com/imagespln/cent1.jpg https://www.rqriley.com/imagespln/cent2.jpg https://www.rqriley.com/imagespln/cent3.jpg https://www.rqriley.com/imagespln/cent4.jpg |
Re: Wow...
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It's always been true that
It's always been true that low body weight and small displacement= more mpgs. SVOboy seems to be on the right track, I'd bet if he does his stuff right we could see a 70mpg car from him.
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Anywho, I thought the PM article was using an MG Midget and a kubota engine to make good mpg? |
You don't need a smaller
You don't need a smaller motor to accomplish your goal. You need a better way to use the fuel. Like fuel cutoff, fuel heaters and engine management.
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I've got fuel cut off like
I've got fuel cut off like all the newer hondas and stuff, so that's there. I have engine management also. Fuel heaters don't work according to diamond larry which makes sense to me but meh.
I think the 1.2 versus 1.5 would be a huge difference in mileage. |
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Sleeving (at least in its
Sleeving (at least in its normal sense) does not affect displacement. The sleeves are the gaps outside of the piston.
https://www.drwtransmission.com/image...%20sleeves.jpg The sleeves would be the junk with the holes which replace the just empty area: https://www.turbomagazine.com/tech/01...ker04_zoom.jpg |
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See I told you fuel heaters
See I told you fuel heaters work, it just needs to be adjusted. Megasquirt would at least improve fuel economy by 2mpg. But spending a crap load just to get 2mpg is pointless.
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w00000t! |
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https://www.brafilm.no/movie_images/h_304112.jpg |
I suck. I think I was
I suck. I think I was confused by the DIY sleeving article that's on honda-tech. Seems more like a DIY block guard I guess, :(
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Diesel
Seems I recall reading about a guy in California that swapped a Kubota diesel into a Metro and he got 95 mpg ..............
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96 mpg
Years ago in a publication called Diesel Car Digets there was an article that told about a conversion using a 1970 Mazda R-100 and a Kubota 2 cyl diesel with a Toyota 5-speed transmission that would reach freeway speeds, rather slowly, and got 96 mpg to a gallon of diesel. The publication date was around 1974.
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A smart cdi engine in an aerodynamic and light car like an Insight would be a nice combo.
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It's possible to get 104mpg in a civic vx if you only go 20mph, or 116mpg in a metro xfi at the same speed.
Road And Track Article If I want to get 128mpg at 35mph I'll ride my moped, sure 85mpg at 55mph would be nice compared to the 65mpg that my motorcycle gets going that speed, but what's it get at 70mph freeway speeds, if it even goes that fast? |
Provided it goes that fast, probably high 60s. I dunno why anyone who's interested in efficiency would go faster than 55-60mph on the freeway...
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some people like to go over 65mph on the interstate to save time, or to keep from being run over, I know I've enjoyed my civic vx being able to merge on to a buissy freeway with 5 adults in to car on a number of occations, I also have ridden in vehicles that are governed to cut out the engine if you try to go over 85mph for more then about 5 seconds, to me it would make sense to drop that down to 80mph or so.
It's not very safe to drive alot slower then everyone else, I think being rearended is still the most commen form of trafic acident, and car accedents are the most commen way to be killed. |
I dunno where this fear of being rear-ended comes from... Just stay on the right where you won't get people going 85mph up your butt. Iirc, 80% of all traffic fatalities are due to drunk driving and run off the road accidents, and even then I'd rather being going 55mph and have a drunk rear end me than go 85mph in the same situation. Braking distances are proportional to KE, and go like V^2. So at 55mph I can come to a stop roughly 2.3 times sooner than at 85mph, which is a lot of real estate I'd rather not cover in a panic situation given the choice. Merging is just a matter of checking your mirror ime, but I guess people feel more secure with more power?
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Idling in 5th my car (diesel) runs about 28-29 mpg and SG indicates between 120 mpg and 180 mpg. Some day late at night I will try driving home that way ;)
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This will go no where but...Briggs and Stratton makes nice little diesels. The price will scare you.
https://www.tulsaenginewarehouse.com/...47-580447.html There are a lot of small diesels around but you need to get the engine at salvage price to make any sense of any conversion I could come up with. Did you follow the earlier omgwtfbyobbq link to this link? This is one cute little bugger. https://www.canadiandriver.com/articles/gw/vw1litre.htm I need to figure out and copy that front wheel treatment. If Boeing can go 500 mph wihout covering up their wheels I ought to be able to go 1/10 of that. Some planes don't completely cover the wheels when retracted. |
i do beleave that the car the thread is about is a diesel/electric hybrid, similar to a freight train. the diesel runs a generator at its most efficient speed.
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>>I dunno where this fear of being rear-ended comes from... Just stay on the right where you won't get people going 85mph up your butt.
Wish that were true on the freeways in California :-) |
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I have had many thoughts about using another Spitfire for a chassis for FE testing ideas. |
Its a small world- I had a 74 Triumph Spitfire about 15 years ago. Very light and very easy to work on with the flip up front end. I never bothered to check the mileage when I had it- I only cared about power and cornering back then.
Its weight and low frontal area would make it a great FE project car. Here's a member with one: https://www.gassavers.org/garage/view/1043 I am puzzled by the new 600cc Honda car- is it the Fit? With such a small engine, I figured the mileage would be in the 70's or so, but it isn't- any thoughts as to why its not much higher than civics and metros? |
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I guess its not that new after all- the 660cc Honda Beat
https://www.kei-cars.com/index_files/beat_info.htm https://en.wikipedia.org/wiki/Honda_Beat But why do you all think it doesn't have better FE numbers? If it was geared to low for the highway, you'd think it would still get really good FE in the city. |
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