heated carbs, do you use them?

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snopax

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Hi guys,
Does amyone use the heated carb feature on their sled? If so at what temp do you turn it on? What is it suppose to do?
 

Have always just left mine on. I cycle the knob occasionally to keep it from setting up, but have never turned it off.
 
I did a little searching and it seems like it is just a system used to keep air passages from icing up. What about fuel quality... Seems to be a lot of religion in the hot fuel vs cold fuel. Some say cold fuel is more dense, so more energy per intake stroke, others say warm fuel atomizes more efficiently so more complete burn, better epa, and energy delivery. Anyone have any theories?
 
I leave mine on all the time. The insurance it provides is well worth the chance that the slightly warmer air/fuel might cause a minimal loss.

Meat
 
TopGunnSrx said:
"feels" more dogish with it turned on.
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I agree with this so I run mine on when it is real cold out say 5 below or more. Just because it is real cheap insurance.
 
I turn ours on if temps are around 15* and colder. I really can't tell the difference if I forget and leave on in temps around 25* or so. But I really can tell if they are off in -15* or so. Oh these are Ferenhiet temps. Good luck Al
 
snopax said:
I did a little searching and it seems like it is just a system used to keep air passages from icing up. What about fuel quality... Seems to be a lot of religion in the hot fuel vs cold fuel. Some say cold fuel is more dense, so more energy per intake stroke, others say warm fuel atomizes more efficiently so more complete burn, better epa, and energy delivery. Anyone have any theories?
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I have all kinds of theories !!! There is a bunch of nonsense about fuels.. Yes,, those theories are relatively true,,but NO ONE will or CAN tell the difference between 30 degree fuel and 50 degree fuel... The carb heaters do NOT warm the fuel up THAT MUCH because the fuel doesnt stay there for long.. it does prevent icing which is DETRIMENTAL to your engine if your carbs ice up. so,, leaving the heater ON will do MORE GOOD than harm... Fuel is designed to RESIST atomization in the SUMMER BLENDS and PROMOTE ATOMIZATION in the wintertime.. fuel atomizes in the winter at around TWENTY BELOW ZERO,, so atomizing in your carb circuits under your hood will be NO PROBLEm ( unless you run RACING FUELS of 100 octane or HIGHER).. (100LL has atomizers added) Warm fuel will NOT burn more completely,, in fact COOLEr fuel will burn more RAPIDLY than warmer fuel.. it's about specific gravity moreso than temperature...
 
nosboy said:
I have all kinds of theories !!! There is a bunch of nonsense about fuels.. Yes,, those theories are relatively true,,but NO ONE will or CAN tell the difference between 30 degree fuel and 50 degree fuel... The carb heaters do NOT warm the fuel up THAT MUCH because the fuel doesnt stay there for long.. it does prevent icing which is DETRIMENTAL to your engine if your carbs ice up. so,, leaving the heater ON will do MORE GOOD than harm... Fuel is designed to RESIST atomization in the SUMMER BLENDS and PROMOTE ATOMIZATION in the wintertime.. fuel atomizes in the winter at around TWENTY BELOW ZERO,, so atomizing in your carb circuits under your hood will be NO PROBLEm ( unless you run RACING FUELS of 100 octane or HIGHER).. (100LL has atomizers added) Warm fuel will NOT burn more completely,, in fact COOLEr fuel will burn more RAPIDLY than warmer fuel.. it's about specific gravity moreso than temperature...
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true fuel can freze during summer on airplane that why they have carb heat so doesnt need to be cold to freeze ...only need perfect condition temp and humidity and there u go you have a freeze carb ...
 
if you have ever had to hold the flashlight while 3 other guys take off the carbs in the middle of a lake in the dark with 20 mph winds all because someone forgot to turn on their carb heaters, you will leave yours on all the time. if you think there is a performance loss, it is in your head.
 
Thumper1 said:
if you have ever had to hold the flashlight while 3 other guys take off the carbs in the middle of a lake in the dark with 20 mph winds all because someone forgot to turn on their carb heaters, you will leave yours on all the time. if you think there is a performance loss, it is in your head.
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GOOD POST!!!
 
Lower octane fuel will burn MORE RAPIDLY than higher octane fuel also...
 
Thumper - Next time you have a frozen carb problem. You and the rest of the crew should open the trunk consume all the beer. Then piss on those carbs. Everyone lines up and one at a time and run a train on the carbs. Hot piss works every time.
 
Mac said:
Thumper - Next time you have a frozen carb problem. You and the rest of the crew should open the trunk consume all the beer. Then piss on those carbs. Everyone lines up and one at a time and run a train on the carbs. Hot piss works every time.
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thats a good idea, but they can hold their own flashlight!
 
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