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Old 03-27-2011, 01:39 AM
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Ziegelsteinfaust Ziegelsteinfaust is offline
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Fish Carb

Have any of you guys heard of this thing? Or is it Turbo Encabulator carb talk.

It sounds interesting to me becouse I have supertuned Holleys, and have gotten a few more mpg's for my efforts. Although it was touchy it did work for me.

It somewhat stands to reason that this carb could give better mpgs while not being to touchy becouse of its extra ports. It also works totaly different then a holley by the way it deliver fuel.

I have played with fuel injection a bit, and it never gave me that much more economy then a good carb. It just had broader performance.

Oh well it did sound interesting.

Fish Carb Stories

FISH CARBURETOR

John R. Fish -- Carburetor -- Articles & US Patent
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Old 03-31-2011, 11:04 AM
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While interesting from both historical and conspiracy theory perspective, the carburetor was rendered obsolete in the 1960's by Bosch, with the first mass produced port EFI system introduced on the 1968 VW Type III. I saw dad's 1970 VW Squareback get over 40mpg highway. The new Ford Focus is able to use an incredible 12:1 compression ratio on unleaded gasoline using direct cylinder fuel injection, the next big thing in automotive fuel delivery and efficiency.

There is a fairly new carb for the experimental aircraft market that shares some resemblance to the Fish in that it uses a spray bar instead of nozzle. It is also known to be quite temperamental in getting the mixtures right. It also costs over $2000.

Ellison Fluid Systems: Home Page
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Old 05-09-2011, 04:05 AM
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fish carb stories have been around for a while. but there has never been any good scientific test to support that they actually work.

as devils advocate, an engine requires X amount of fuel to put out Y amount of power. granted it can be leaned out for better economy so long as there is complete combustion. however (lots of them with fuel mileage huh?) there is hardly ever a "complete" burn which is where hydrocarbon emissions come from, the most complete burn comes from a gaseous fuel, rather than a liquid fuel which is what the fish carb is supposed to do- extremely atomize the fuel to make it closer to a "gas"

there is propane, but just like alcohol, it has very different qualities, such as BTU/pound and octane rating. our engines that are intended for gasoline are not optimized for these other fuels, which is what causes alot of disappointments with lower fuel economy.

fuel injection can meter the correct amount of fuel to maintain a given air/fuel ratio, but like alot of automotive systems, it is more optimized for emissions than it is for fuel economy. in a nut shell: best emissions happens at 14.7 stoichiometric, but fuel economy is better around 16.5. the problem? the higher combustion temeratures (that also like to eat up engine internals) produce too many NOx, or nitrogen oxides (which help create acid rain)

aftermarket computers can be tuned for fuel economy, while still being able to have the proper enrichment for acceleration. but your not gonna find that tune on a factory computer. and while a carb would have a low initial cost, the time and additional equipment to tune it to safe levels for those air/fuel mixtures would not make it very feasible for the average consumer. and it is still nothing more than an organized leak...

the closest that i have seen to an atomizer from a trusted source was smoky yunicks fiero that used a low speed turbo. which is an interesting read that I hope to test on someday.

I probably went off topic a bit, and I apologize. I am kinda biased towards fuel injection...
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Old 05-09-2011, 02:21 PM
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I read about Smokey Feiro, but it too had a smog problem. Great mpgs, but it was quirkey and hard to tune. Plus the smog was higher the acceptable.

Maybe now they could do something with it, but then it was probily the edge of technoology.

I like FI, but not the prices the command.

Plus I can tune a holley or Q-Jet to do what I want in a few minutes, and get a carb built the way I want for $300. FI cost about $1500 just for a computer.
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Old 05-09-2011, 07:14 PM
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mine was 260

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Old 05-10-2011, 12:19 PM
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Quote:
Originally Posted by Ziegelsteinfaust View Post
I read about Smokey Feiro, but it too had a smog problem. Great mpgs, but it was quirkey and hard to tune. Plus the smog was higher the acceptable.

Maybe now they could do something with it, but then it was probily the edge of technoology.

I like FI, but not the prices the command.

Plus I can tune a holley or Q-Jet to do what I want in a few minutes, and get a carb built the way I want for $300. FI cost about $1500 just for a computer.
Smokey's fiero met the tailpipe requirements for 2000 (per EPA reports). Because of the lean mixture, there were more refinements needed which CPU's in the next few years and composite materials could have solved and brought the car to market.
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Old 05-10-2011, 12:19 PM
 
 
 
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