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Old 07-28-2011, 10:52 PM
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air gap vs non air gap for daily driver

ok, so i am just wanting to learn some advantages and disadvantages of intakes on a daily driver. gas mileage, performance, and thus. i live in Arkansas and i dont get to much cold here. of course i know aluminum is a good conductor of heat. but i would like to know more

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Old 07-29-2011, 12:09 PM
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intake question

No freezing start up ,Air gap sounds OK
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Old 07-29-2011, 04:00 PM
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see my thoughts is the heat cross over would only help warm up the motor because once the motor was warm with or with out a heat cross over it will be the same but thats my thoughts, i dont know for sure
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Old 07-29-2011, 04:47 PM
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The Air Gaps are very cold natured, below 50* they can be a pain.
They don't get heat from oil splash or exhaust.
With the Non Air Gap you can block off the exhaust crossover and install an oil shield if wanted to restrict and/or minimize heat transfer. Some heat really helps fuel atomization in cool/cold weather.
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Old 07-29-2011, 05:04 PM
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so a good thermostat could help in that department then, i guess get the temp around 180 would be good for all around?
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Old 07-29-2011, 08:29 PM
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I live in Alabama, and it gets plenty cold enough here for the use of a non air gap intake. Why is because in the winter it helps eliminate throttle blade icing. How do they ice up? the air is moving so fast over the throttle blades the moisture sticks to them, plugging the idle passages forcing the carb to pull fuel from the main boosters which floods the engine severly, in some cases fouls the plugs out. If you run a air gap intake in the winter you would have to use a can of sea foam or the like on every fill up to eliminate carb icing. The weather doesn`t have to get to sub zero temps for it to do so either.
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Old 07-29-2011, 10:51 PM
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i had my air gap on in the winter and it was a little tuff but i didnt have that trouble, i know that my carb and air cleaner still would get warm with the air gap and 3/4 spacer. i have both intakes but really Don't know which is better. of course i polished the air gap and gasket on the air gap. But would a warmer thermostat help the air gap in winter? trying to figure this out so i can have a good daily driver with a little power.
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Old 07-30-2011, 06:53 AM
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High humidity and less than 50 degree weather = carb icing, with air gap style intakes, or blocked heat crossovers. Regardless of coolant thermostat rating. Engine temp has little to do with air inlet temp on a lot of vehicles. Especially if running an "open" Hot Rod type aftermkt air filter.

I get complaints from October till late spring. Michigan, daily use vehicles, should always have intake heat.
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Old 07-30-2011, 07:44 AM
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You driving in any cool weather iceing is a factor.I ran a non air gap performer in nebr with open crossover still had icing in winter.You want trouble free put TPI on.
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Old 07-30-2011, 09:11 AM
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Winter in Arkansas hah!
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Old 07-30-2011, 06:07 PM
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Quote:
Originally Posted by RippinRon
Winter in Arkansas hah!
there is a winter here in the fort for about a week lol
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Old 07-30-2011, 06:40 PM
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winter?

Yea you got skeeters the size of B17's Air gap it and move on.
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Old 07-31-2011, 12:19 AM
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luckily not lately, been real dry and hot, so i get to keep my blood
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Old 07-31-2011, 08:38 AM
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I ran an air gap for awhile and hated it. Took around 20 minutes of driving to get the intake path to proper operation temperature when temps dropped below 50F. The engine would stumble off idle (on take offs) until the intake warmed up.

Plus hardware and tools always seem to drop under the carb.

For a street car, get a regular rpm intake.
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Old 07-31-2011, 01:18 PM
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Quote:
Originally Posted by 454C10
I ran an air gap for awhile and hated it. Took around 20 minutes of driving to get the intake path to proper operation temperature when temps dropped below 50F. The engine would stumble off idle (on take offs) until the intake warmed up.

Plus hardware and tools always seem to drop under the carb.

For a street car, get a regular rpm intake.
i hate losing the tools under the intake. i got my air gap on and it takes 5-10 mins and its up to around 175 where it stays. under normal driving i takes off good. havent gone wot becuase i need to tune it some more. i tried the non air gap version and after 1hr of driving it felt like it lost its take off under normal acceleration. i guess my motor likes the air gap better, last winter i had the air gap and non. air gap worked good when i installed the 180 thermostat. just took longer to warm up. right now i got the 106+ weather outside with humidity so its a little tough on my truck.
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