So I was googling Engine mods the other day and I read (somewhere) that you could increase power by insulting the fuel line. as the fuel that enters the cylinder is cool etc... blah blah blah. sounded like they got the air intake idea crossed with the fuel of something. I actually thought that warm fuel would be better as it would burn faster..

Now I went for a drive and then checked my fuel line and it sure was hot, but

A) will fridge insulation actually work?
B) will it really make a difference?

???

also I noticed that the engine bay is quiet hot, I know this is normal but I would think that they sure would have created some sort of air flow through it to keep it cool as possible.

I would think the fuel needs to be warm as well as a car always seems to run better after its warmed up, but not positive.

The engine bay was designed all for sound dampening so I don't think they care about temperature. First, take off your cover, that helps somewhat, then there are a seals all around the hood, removing these also allows more air in. Opening the top of the grill also allows more airflow in.

A) almost any type of insulation will keep it cooler.
B) not enough to even measure.

A gallon of cold gasoline does take up less space than hot gasoline. But, regardless of the temperature, the injectors are going to spray the same metered amount - in such small quantities that it's insignificant.

A) almost any type of insulation will keep it cooler.
B) not enough to even measure.

A gallon of cold gasoline does take up less space than hot gasoline. But, regardless of the temperature, the injectors are going to spray the same metered amount - in such small quantities that it's insignificant.


That reminds me. I heard once that you actually get different amounts of gas when you fill up in the morning versus the afternoon due to expansion Anyone heard this one?

That reminds me. I heard once that you actually get different amounts of gas when you fill up in the morning versus the afternoon due to expansion Anyone heard this one?

The problem with that theory is that the gas is stored in underground tanks.
http://www.associatedcontent.com/article/669765/buy_cold_gasoline_and_save_money.html?page=2&cat=3

That reminds me. I heard once that you actually get different amounts of gas when you fill up in the morning versus the afternoon due to expansion Anyone heard this one?


Yeah, I never noticed a difference.

I did insulate the fuel line on my 1986 Mustang 2.3L. The line ran right next to the engine block and in the summer, I would get vapor lock. The insulation solved that problem.

You need to use some kind of insulation in which will hold up to the elements/climate. This might increase HP some but most likely, you mpg will go down. When you see people at the drag strip, they load ice into a hopper around the fuel cell to cool the fuel. They do this to get ever last HP they can for the runs. For an average car, it will be a waste for the most part. The HP to MPG benefit will not be worth it. Example, HP increases 2-4 but MPG goes down the same amount.

I'm not really this smart... I got the following from an engineers forum (chemical and automotive engineers). :)

-----
Real rough ball park summary.

a:f ratio 15:1 by mass.

Forget about specific heats as I can't remember them.

15 deg drop in fuel temp = 1 deg drop in charge temp, but evaporation rate is also hurt.

Net effect, two tenths of a gnats whisker power increase for a pound or two weight increase

-------

The limiting factor on street cars is getting enough oxidizer (air) into the cylinder, not getting enough fuel. The heat capcity of fuel is.54 btu/lb - F and the latent heat of vaporization is 125 BTU/lb. The heat capcity of air is .25 BTU/lb-f. 1 lb fuel vaporized gets 125 BTU cooling, with 15 lb of air this will cool the whole mixture about 30 F. At 30 F thats about 5.5% increase in the amount of air than with out the fuel cooling effect

If the fuel was cooled down by 50 F, that would give 27 more BTU/lb or 21% more cooling or 1.0% more air than before.

If you could just cool the air down by 6 degrees you would get the same effect (or close anyway)

With dragsters, the oxidizer is in the fuel (nitro methane), so cooling the fuel is also cooling the "air" too.
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To summarize in my own words... if you cool the fuel to get more fuel into the engine, why not just squirt more in? That's easy.
Getting more fuel in isn't where the power gains are. Getting more air in is where the power gains are - hence superchargers and turbos.

If you are talking nitro burning monsters, that's different. Nitro methane and gasoline are two completely different animals.

Hi! Everyone...here some helpful GAS tips from the inside!!!

Don't know what you guys are paying for gasoline.... but here in California we are also paying higher, up to $3.75 per gallon. But my line of work is in petroleum for about 31 years now, so here are some tricks to get more of your money's worth for every gallon.




Here at the Kinder Morgan Pipeline where I work in San Jose, CA we deliver about 4 million gallons in a 24-hour period thru the pipeline. One day is diesel the next day is jet fuel, and gasoline, regular and premium grades. We have 34-storage tanks here with a total capacity of 16,800,000 gallons.




Only buy or fill up your car or truck in the early morning when the ground temperature is still cold. Remember that all service stations have their storage tanks buried below ground. The colder the ground the more dense the gasoline, when it gets warmer gasoline expands, so buying in the afternoon or in the evening....your gallon is not exactly a gallon. In the petroleum business, the specific gravity and the temperature of the gasoline, diesel and jet fuel, ethanol and other petroleum products plays an important role.




A 1-degree rise in temperature is a big deal for this business. But the service stations do not have temperature compensation at the pumps.




When you're filling up do not squeeze the trigger of the nozzle to a fast mode. If you look you will see that the trigger has three (3) stages: low, middle, and high. In slow mode you should be pumping on low speed, thereby minimizing the vapors that are created while you are pumping. All hoses at the pump have a vapor return. If you are pumping on the fast rate, some other liquid that goes to your tank becomes vapor. Those vapors are being sucked up and back into the underground storage tank so you're getting less worth for your money.




One of the most important tips is to fill up when your gas tank is HALF FULL or HALF EMPTY. The reason for this is, the more gas you have in your tank the less air occupying its empty space. Gasoline evaporates faster than you can imagine. Gasoline storage tanks have an internal floating roof. This roof serves as zero clearance between the gas and the atmosphere, so it minimizes the evaporation. Unlike service stations, here where I work, every truck that we load is temperature compensated so that every gallon is actually the exact amount.




Another reminder, if there is a gasoline truck pumping into the storage tanks when you stop to buy gas, DO NOT fill up--most likely the gasoline is being stirred up as the gas is being delivered, and you might pick up some of the dirt that normally settles on the bottom. Hope this will help you get the most value for your money.




DO SHARE THESE TIPS WITH OTHERS!

WHERE TO BUY USA GAS, THIS IS VERY IMPORTANT TO KNOW.


READ ON

Gas rationing in the 80's worked even though we grumbled about it. It might even be good for us! The Saudis are boycotting American goods. We should return the favor. An interesting thought is to boycott their GAS.




Every time you fill up the car, you can avoid putting more money into the coffers of Saudi Arabia . Just buy from gas companies that don't import their oil from the Saudis.




I thought it might be interesting for you to know which oil companies are the best to buy gas from and which major companies import Middle Eastern oil.




These companies import Middle Eastern oil:

Shell........................... 205,742,000 barrels
Chevron/Texaco......... 144,332,000 barrels
Exxon /Mobil............... 130,082,000 barrels
Marathon/Speedway... 117,740,000 barrels
Amoco............................62,231,000 barrels

Citgo gas is from South America , from a Dictator.


If you do the math at $30/barrel, these imports amount to over $18 BILLION! (oil is now $90 - $100 a barrel)

Here are some large companies that do not import Middle Eastern oil:

Sunoco..................0 barrels
Conoco..................0 barrels
Sinclair.................0 barrels
BP/Phillips............0 barrels
Hess.......................0 barrels
ARCO....................0 barrels
If you go to Sunoco. com, you will get a list of the station locations near you.




All of this information is available from the Department of Energy and each is required to state where they get their oil and how much they are importing.




But to have an impact, we need to reach literally millions of gas buyers. It's really simple to do.




Now, don't wimp out at this point.... keep reading and I'll explain how simple it is to reach millions of people!!

I'm sending this note to about thirty people. If each of you send it to at least ten more (30 x 10 = 300) ... and those 300 send it to at least ten more (300 x 10 = 3,000) and so on, by the time the message reaches the sixth generation of people, we will have reached over THREE MILLION consumers!!!!!!! If those three million get e xcited and pass this on to ten friends each, then 30 million people will have been contacted!

If it goes one level further, you guessed it.....THREE HUNDRED MILLION PEOPLE!!!
Again, all you have to do is send this to 10 people.


How long would all that take?

That's from an email that has been circulating for some time, and much of it has been proven to be false.
And you probably should indicate that those are not your words.

The vapors that you would supposedly lose by pumping at a fast rate would amount to maybe one or two drops of gas. And I spill that much just taking the nozzle out of the tank. :)

Large volumes of liquid stored in underground tanks do not have big differences in temperature between day and night, if at all. Ten feet down, not even the soil temperature changes that much.

Are people allowed to post chain mail on the forumz? LOLOL

Are people allowed to post chain mail on the forumz? LOLOL

I can't wait for someone to post one about a "Gas Boycott." Everybody always freaks out when the gas prices go up. I just thank God that I'm not waiting in line for it like my parents had to do in the '70's.

If you really want to save gas, try the following:

Drive less. Plan your trips so you don't have to make multiple trips.
Slow Down. Driving above 60-65 consumes more gas.
Let your car warm up for a couple of minutes before you shove it in gear. A cold engine comsumes more fuel because it takes more fuel to make a cold engine stay running.I drive 150 miles/day to work and back and I'm getting ~26-27 mpg. Driving habits affect your mileage more than anything else.

I can't wait for someone to post one about a "Gas Boycott." Everybody always freaks out when the gas prices go up. I just thank God that I'm not waiting in line for it like my parents had to do in the '70's.

If you really want to save gas, try the following:

Drive less. Plan your trips so you don't have to make multiple trips.
Slow Down. Driving above 60-65 consumes more gas.
Let your car warm up for a couple of minutes before you shove it in gear. A cold engine comsumes more fuel because it takes more fuel to make a cold engine stay running.I drive 150 miles/day to work and back and I'm getting ~26-27 mpg. Driving habits affect your mileage more than anything else.

Yeah, the gas boycott is just plain dumb. If we all don't buy gas on Tuesday, it won't make a difference since we will all just drive the same amount, and use the same amount of gas, and put just as much in at the next fillup.

P.S. I forgot to forward that chain post to 10 people like it says.... is that bad luck?

i didn't know dave and zee