what was done to your rubicon this week? - Page 757 - Rubicon Owners Forum
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post #7561 of 7766 (permalink) Old 11-13-2017, 07:31 PM
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I've always liked the looks of the Poison Spyder hood louver piece, just didn't like the fact that the rear set of louvers faced forward and easily could become rain scoops in a heavy rain. With all the electrical connectors below this area it just didn't seem like a good design decision on the part of Poison Spyder.

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post #7562 of 7766 (permalink) Old 11-14-2017, 11:23 AM
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At first I was a little concerned about that, but figured they would act like a cowl induction hood if they faced the windshield allowing more air and moisture to be pulled into the engine compartment, because the air pressure is lower at the hood line next to the windshield. FWIW you don't want the rear louvers to be operational, you don't have to cut the holes in the hood for them, problem solved. Just my opinion.

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Last edited by walldo; 11-14-2017 at 11:50 AM.
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post #7563 of 7766 (permalink) Old 11-16-2017, 12:42 PM
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Quote:
Originally Posted by walldo View Post
At first I was a little concerned about that, but figured they would act like a cowl induction hood if they faced the windshield allowing more air and moisture to be pulled into the engine compartment, because the air pressure is lower at the hood line next to the windshield. FWIW you don't want the rear louvers to be operational, you don't have to cut the holes in the hood for them, problem solved. Just my opinion.
I recommend keeping the hood insulation piece. I've found that on cold winter mornings I don't generate the heat (in the cabin) that I want unless that is installed.
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post #7564 of 7766 (permalink) Old 11-16-2017, 09:15 PM
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I recommend keeping the hood insulation piece. I've found that on cold winter mornings I don't generate the heat (in the cabin) that I want unless that is installed.
My Jeep didn't have any hood insulation so I guess I will either have to rough it, or block the airflow through the radiator like a Diesel. Lol

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post #7565 of 7766 (permalink) Old 11-17-2017, 09:16 AM
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Cool

The same hood vent is on mine and there is no issue with keeping myself or passengers warm.


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post #7566 of 7766 (permalink) Old 11-17-2017, 11:07 AM
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You may never notice. The heat certainly works, I just find that it isn?t as piping hot as normal.
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post #7567 of 7766 (permalink) Old 11-17-2017, 04:46 PM
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^^You are correct, I will probably never notice. I live in Florida My attempt at a little humor.
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post #7568 of 7766 (permalink) Old 11-17-2017, 08:55 PM
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Originally Posted by walldo View Post
.......... FWIW you don't want the rear louvers to be operational, you don't have to cut the holes in the hood for them, problem solved. Just my opinion.

Granted, that would be one way to solve the problem but trapping water between the hood and louver piece didn't seem desirable either. It's just a case of "to each their own".

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post #7569 of 7766 (permalink) Old 11-18-2017, 01:36 AM
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Quote:
Originally Posted by walldo View Post
At first I was a little concerned about that, but figured they would act like a cowl induction hood if they faced the windshield allowing more air and moisture to be pulled into the engine compartment, because the air pressure is lower at the hood line next to the windshield. FWIW you don't want the rear louvers to be operational, you don't have to cut the holes in the hood for them, problem solved. Just my opinion.
When I was trained as an aeroengine tech in the CAF I was told that the airpressure was higher at the base of the cowel at speed. The air stacks up at the base. ��*♂️

Chris
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post #7570 of 7766 (permalink) Old 11-18-2017, 07:32 PM
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You've got me curious Chris. What does that mean? If the air contains water does that mean the water could get into the forward facing louvers? Or, on the other hand does that mean that there is a vacuum in that area?

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