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New V-mount setup

Old 03-31-13, 02:34 PM
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New V-mount setup

I'm designing the new v-mount for my 20b and due to space I am a little limited. I'm thinking of making an airbox for the fan's and having them sit parallel to the floor but I am not sure how this will work efficiency wise. Has anyone ever tried something like this or have an idea if it will work well? My previous setup had the stock fans on the rad so it still had an angle but with this setup the air now has to make a 90 degree turn underneath the car to get out. Do you think this will work? I put the terrible drawing of the engine to show just how close the pulley bolt is to the intercooler, its like half a finger LOL. The orange circle is the fans.



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Old 03-31-13, 03:20 PM
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Seems like a low speed, when the fans matter, the 90* exit won't matter much.
Why does moving the fans away from the rad help you with your setup? More room?
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Old 03-31-13, 07:07 PM
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Originally Posted by Barban View Post
Seems like a low speed, when the fans matter, the 90* exit won't matter much.
Why does moving the fans away from the rad help you with your setup? More room?
I'm using 2 high cfm fans which are a little thick. The fans want to stick about 2.5 inches below the bumper lip which means they will hit things easily so this is the solution I came up with to fit them above the lip height by moving them back and up.

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Old 03-31-13, 08:48 PM
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Some stock cars like the FC RX-7 that use an engine clutch fan have a good sized duct/shroud between the radiator and the fan and it works well.

You will just have to take care that the duct is well sealed.
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Old 03-31-13, 09:21 PM
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I know the duct itself will work but my concern was the 90 degree turn underneath the car might be a restriction of some sort.

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Old 03-31-13, 11:09 PM
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I am not an engineer, but-

With they dynamics of the moving road under the car and the relatively low pressure area I think it will exhaust very well.

I would focus on ducting the inlet so the high velocity air is directed more perpendicular to each core. As in, getting the airflow to change direction before it hits the core.

Otherwise the V-mounts rely on the turbulence in airflow to change direction and penetrate the cores. The turbulence occurs as the airflow hits the cores, so you are basically building a boundry layer over the front of the cores which inhibits flow through the core.
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