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Old 06-26-2014, 11:44 PM   #1
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Sprinter hood vents on a Ford

I finally got around to putting some hood vents on my rig. This project has been bouncing around in my head for a long time. I knew it would take a lot to make this happen. I got fixated on these Sprinter hood vent and could find anything I liked as much.



These vents are not ideal to retrofit to a different vehicle. As a matter of fact, (some of you may know this) these are not hood vents at all. They are the Sprinter's air intake for the vent, heater and AC. Another down side to these is that only the drivers side vent is actually a vent. The passenger side is completely blocked and is only for looks. I talked to several Sprinter owners and none of them had realized this until I pointed it out to them. So to make this happen I was going to have to cut out over 200 little triangles!





The third downside is that in the Sprinter hood they are recessed almost 1/2" so I would have to find a way to bury them that much into my hood.
The good thing about these vents is (I think) they look really good and they are cheap. Genuine Mercedes Benz Sprinter parts, $15 for the drivers side, $22 for the passenger side. Seriously!

But first I was going to have to make sure that I could get these vents to mount into a Ford fiberglass hood. I picked up a old hood from a pick-a-parts for $40, just to figure out if this could be done. After a few evenings in the garage I knew it could be.





So the next thing was to do a full install on a practice hood. The first hood was cut up quite a bit for extra material to make the mounting platforms that would assist in creating the depth I needed. That what this is.



A friend hooked me up with a free second hood that I installed both vents and cut as much reinforcement away as I was comfortable with to let as much air flow as possible.



I then put this hood on my van for a few weeks to see how it would hold up and if I noticed any difference in temps (I'll talk a little more about that late).



After making a few small adjustments I was ready to move forward and cut into my hood. I thought about this long and hard but couldn't convince myself not to go through with it.

I put at least 80 hours into this (about 20 went into cutting out all those little triangles). I'm thinking I am the only one crazy enough to go through with this. So I will have a very unique setup.









There was talk on a different thread about hot air come out of the hood vents and getting pulled into the cab vents. So one of the first things I did was to tape several pieces of string to my hood while on a road trip. This would give my some idea of the direction and pressure of the air. What I found was that the strings were being pulled forward, particularly around the center of the hood. Closer to the sides they were being pulled a bit more to the sides but still forward. All of the strings were only being gently pulled not violently blown, even at 70 mph they were just wafting around as if I was at a dead stop on a windy day. Not at all what I expected. This indicated to me that there is a low pressure zone right were these vents were to be placed. And that any hot air would be pulled away from the cab intake vents.

So did it help? Well even at idle there is a lot of air blowing out of the vents. When the fan clutch kicks in, it is blasting out of them. The most noticeable thing is how quickly the ECT drops when the fan clutch engages. Zeta mentioned this in a different thread and he was spot on. I have gotten up into the 220s but even going up a hill, once the fan kicks in the temps drop. The vents definitely help.





Big project and happy to have it done and no longer just bouncing around in my head.
Cheers,
John
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Old 06-27-2014, 12:07 AM   #2
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Re: Sprinter hood vents on a Ford

That. Is. Awesome.

Great work. So you had do cut up the other hood to make the flanges to mount the vents flush with the hood? Did you bond on the flanges? Any need to touch up the paint on your real hood?

I'd been eyballing the hood vents on my boss' Sprinter and wondering about this too... They look a lot better than the riveted on ones with the parallelogram flanges.
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Old 06-27-2014, 01:03 AM   #3
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Re: Sprinter hood vents on a Ford

Thats Awesome!
Looks nice. What is the temperature difference you get with it?
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Old 06-27-2014, 05:43 AM   #4
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Re: Sprinter hood vents on a Ford

I want you as my neighbor.


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Old 06-27-2014, 08:27 AM   #5
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Re: Sprinter hood vents on a Ford

Super cool. Still got the red one?
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Old 06-27-2014, 08:37 AM   #6
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Re: Sprinter hood vents on a Ford

Nice job.

Right hand drive Sprinters have the air intake on the other side - or so I was told when doing some research.
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Old 06-27-2014, 10:08 AM   #7
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Re: Sprinter hood vents on a Ford

Quote:
Originally Posted by BogusBlake
That. Is. Awesome.

Great work. So you had do cut up the other hood to make the flanges to mount the vents flush with the hood? Did you bond on the flanges? Any need to touch up the paint on your real hood?
I'd been eyballing the hood vents on my boss' Sprinter and wondering about this too... They look a lot better than the riveted on ones with the parallelogram flanges.
Thanks guys!
Yes, I used epoxy to laminate the flange together. It is 2 pieces of the hood skin in the front (which is 1/8" thick) and 3 layers in the back. I then used the epoxy to set the flanges in place.
I didn't have to touch-up any paint.
Here is a close up of the the edge that the vent is resting on.



Quote:
Originally Posted by rallypanam
Super cool. Still got the red one?
Yes, I still have the red hood but it does not have the flanges (which is a very big part of the job) and it is from an older mold van, so I had to Mickey-mouse it to close it on my 06 van.

Quote:
Originally Posted by schluchtenflitzer
Thats Awesome!
Looks nice. What is the temperature difference you get with it?
In normal driving conditions the temps are the same as before, around 200. But under stress, when it gets to 216 and the fan kicks in is where I notice the difference, temps drop noticeably quicker and so far have only gotten into the low 220s. And while off road in 4X4 it seems to be a bit cooler, around 190.
Quote:
Originally Posted by BajaSportsmobile
Nice job.

Right hand drive Sprinters have the air intake on the other side - or so I was told when doing some research.
I wish I would have known the before I started cutting out triangles. I'll look into getting one of those as a replacement. Thanks for the info.

Herb, if we were neighbors I would be in more trouble with my wife. I'd never get any work done around the house
Cheers,
John
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Old 06-27-2014, 05:29 PM   #8
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Re: Sprinter hood vents on a Ford

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Old 06-28-2014, 11:18 AM   #9
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Re: Sprinter hood vents on a Ford

Once Again

OUTSTANDING!!!!!!!

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