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Racing vent or dryer vent mod
Topic Started: Sep 17 2008, 11:31 AM (3,325 Views)
Dallas


Manny
May 29 2009, 11:28 AM
Hey that's very ingenious Bent!!!! Are you sure it's not going to eat some water?? Cause we have a lot of rain these days... of course will try not to drive when raining... but just in case it may catch me on the road.

I have a filter like that somewhere on my garage... :rocker
keep this in mind, when activated, im dumping about 3.5 gallons per hour of water/alcohol mix through the engine. the only thing that could harm the motor is if its hydrolocked, where you essentially submerge your air intake completely in water. ive driven cold air intake cars where the filter was real low and driven through puddle submerging the filter, but it was never enough to COMPLETELY submerge it.
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Dallas


Bad Bent
May 29 2009, 12:19 PM

Some reports have said turning it backwards works even better. :hmm NASCAR pulls air in the reverse direction from the hood/windshield area. F1 and NHRA use a forward facing scoop design. Motorcycle manufactures are designing bikes with Ram Air. :'(
I believe the idea behind the cowl hood design you are referring to is because theres a positive pressure wave created there. its something you can only precise by putting the car in an air tunnel, and these cars are designed this way to create more power.

the cars used in racing that actually get to high speeds can make use of ram air to an extent, you can look up the actual specs on google im sure, but you need (these are ass-pulled numbers for now) 60 or so miles per hour to start getting to the point of making a difference, 120+mph is where theres enough air resistance (the force going into the intake) that its creating pressure. the only difference the butt dyno gets, aided by the more powerful sound, is slightly colder air to result in a more dense wave of air entering the cylinder. but at the same time, the stock cooling system heats the intake manifold AND throttle body, so while you may reduce inlet temps by 10-15degrees by pulling outside air, the effect is reduced by all the heat just before it enters the engine. this does two things though, it helps speed the air up entering the cylinder by expanding it a little and it helps the car run better when its cold outside. but it moves fast enough its hard to measure the actual air temp differences. removing the coolant through there on my motor, and installing a larger intercooler on mine gave me a big difference at higher speeds. I feed the turbo the coolest air I can get too.

hot air will produce better mileage though, for the same reason you get better mileage in the summer vs winter (not including warm up..)
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Manny
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Yes! a Costa Rican member

FyreDaug
May 29 2009, 02:08 PM
Bad Bent
May 29 2009, 12:19 PM


hot air will produce better mileage though, for the same reason you get better mileage in the summer vs winter (not including warm up..)
I agree with that,
just my thought, that's the reason why there are some differences using a "cold air intake" and "SRI" (Short RAM air)... Based on my experience even with previous cars... I can say more torque with the first one vs fuel economy with second one

Very intesting posts from you guys... definitely too much to consider and to think about! :cheers
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