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Old 06-24-2008, 02:13 PM   #1
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Default fuel line routing question

does running if your fuel line beside your pipe are the head of the motor couse any kind of problems.
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Old 06-24-2008, 02:23 PM   #2
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does running if your fuel line beside your pipe are the head of the motor couse any kind of problems.
yes! You want to keep your fuel line away from your pipe and head. Heating your fuel can cause poor power results.
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Old 06-24-2008, 02:25 PM   #3
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No, so long as there are no kinks and the tubbing is not pressed hard against either the pipe or head. Just make sure to check the tubbing often to make sure there is no melting occuring. High quality tubing should be able to handle brushing up against the head and or pipe.
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Old 06-24-2008, 02:26 PM   #4
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yes! You want to keep your fuel line away from your pipe and head. Heating your fuel can cause poor power results.

True but on some makes it is necessary to "loop" the line around the head which might cause a brush or two against it. That situation is fine.
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Old 06-24-2008, 03:02 PM   #5
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what about the heat will that make that do something to the fuel to make your engine bog.
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Old 06-24-2008, 03:08 PM   #6
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i can tell you that i know that in full size racecars it make a lot of difference if the fuel is hot or cold, about 10-20 hp and has been dyno tested but not so sure on 3-4 hp nitro motors. just common sense tells me that it would.....i don't run mine anywhere near a heat source, but i have a buddy that wraps around the head for more length and he has had no problems. so i think personal prefference. just my 2 cents
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Old 06-24-2008, 05:18 PM   #7
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what about the heat will that make that do something to the fuel to make your engine bog.
Yes! The cooler the fuel the better.
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Old 06-24-2008, 06:12 PM   #8
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Yes! The cooler the fuel the better.
is there an exception to this?

would it be "smart" to put the fuel in he deep freeze until you are ready to use it? keeping the fuel at like -10c at all times is good for the fuel and performance?
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Old 06-24-2008, 06:16 PM   #9
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is there an exception to this?

would it be "smart" to put the fuel in he deep freeze until you are ready to use it? keeping the fuel at like -10c at all times is good for the fuel and performance?
Not too sure, but sound interesting can give it a try.
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Old 06-24-2008, 06:46 PM   #10
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try to keep the fuel line from directly touching the pipe all you can.. i do run my line around the back of the motor with no problem..
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Old 06-24-2008, 07:41 PM   #11
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I wouldn't want my fuel too cold as it can cause condinsation. I wrap my line around the head but i also put shrink wrap and some type of cloth line protector to keep it away from the heat source. Fuel burns, and cause's you to have power, i want that power realized in my motor not my line.
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Old 06-24-2008, 07:47 PM   #12
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Originally Posted by mike williams View Post
i can tell you that i know that in full size racecars it make a lot of difference if the fuel is hot or cold, about 10-20 hp and has been dyno tested but not so sure on 3-4 hp nitro motors. just common sense tells me that it would.....i don't run mine anywhere near a heat source, but i have a buddy that wraps around the head for more length and he has had no problems. so i think personal prefference. just my 2 cents
You are comparing a gasoline engine to a nirtomethane engine. So what are we supose to do about the fuel tank that is inches away from the pipe? I wouldnt worry about that. Im more worried about my break linkage wearing a hole in my line than anything.
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Old 06-24-2008, 07:54 PM   #13
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true.. ill take my fuel at room temp!! lol
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Old 06-24-2008, 10:53 PM   #14
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Cool not cold... I just try to keep my line away from heat (pipe,head),my fuel out of the sun, and or even in a Trinity cooler bag. I wouldn't run my line around the head.. I just go around the back of the carb. Going around the head, near the header is prob the hottest area under ur body.
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