The kd4crs/Power Hungry/Gotts Mod (revisited - and with pictures)

***Jackpine*** · #1 Wed, January 28th, 2009, 10:33 AM

Quote:

Originally Posted by kd4crs

Thanks Jack, I went ahead and put together a write up with pictures and emailed it to Bill for him to proof read and post. I concur with Bill regarding the purpose of the holes in the bottom of the stock intake tube being there for water elimination.

The nice thing about the DWV intake mod and its variations is that it preserves the noise canceling abilities of the factory intake which is a CAI even in stock form. It just needs the restriction removed.

In restudying the intake, I'm beginning to warm up to the idea that the holes might be there to drain water. In the case of the 2 rows of three on the bottom of the intake duct, they ARE fairly close to the lowest point on the duct (before it reaches the bellows) and the front row seem to be at the exact bottom of the curvature of the duct. The back row, however is somewhat "uphill" from the bottom of the duct and this seems counterproductive.

There are three resonator chambers. The front large one has a larger hole near, but not at, the lowest point and then another, smaller hole up higher, close to the halfway point. The small rear chamber has a hole at the lowest point. The smaller front chamber has no holes at all. So, the ones with holes could have them for draining water too, but why are they not at the lowest point in the big chamber?

As I said, I'm lukewarm to the holes being drain holes, but why have some of them "uphill"?

On a related note, AgentOrange, I looked through your album at your intake mod. Nice work! However, I'm a little concerned that the intake sitting right behind the tow hook is positioned to really take a big drink of water in the event of driving through a deep puddle or maybe even just heavy rain. I know the tube runs uphill quite a distance from that point, but when the engine is at high rpm, isn't it possible that there could be enough suction to pull water up into the filter box? I like the ram effect idea, but I think if I were going to do this mod, I'd run the secondary duct up high, perhaps just under the headlight. You lose the ram effect here, but the opening would be out of the hot engine compartment.

I like the flexible metal duct into the fender well. Sure looks easier than shaping a rigid ABS tube.

- Jack

AgentOrange · #2 Wed, January 28th, 2009, 10:47 AM

Jack,
My thoughts exactly if I only had the scoop at the bottom, but I don't think water intake would be a problem because of the second air inlet into the fenderwell. Think of drinking through a straw...If there is a hole in the straw above your favorite beverage, all you suck in is air...path of least resistance.

***Jackpine*** · #3 Wed, January 28th, 2009, 10:51 AM

Yep, you're probably right! I suspect there's no way you could create a big enough vacuum to pull water up that distance.

- Jack

bbbxcursion · #4 Wed, January 28th, 2009, 10:50 PM

Looks good! Maybe put some type of soft material along the edge of the hole. I wonder if the intake noise resonates through the truck due to the pipe touching the fender??

bbbxcursion · #5 Wed, January 28th, 2009, 11:49 PM

I'm not sure about the other members.....But someone came to my door and put a gun to my head until I joined. I thought that was the norm for PHP?

***Power Hungry*** · #6 Thu, January 29th, 2009, 01:26 AM

Quote:

Originally Posted by bbbxcursion

I'm not sure about the other members.....But someone came to my door and put a gun to my head until I joined. I thought that was the norm for PHP?

Really? I don't remember doing that... All I said was that someone was going to come to your house and replace your Excursion with a 6.2L Suburban. Talk about misleading!

bbbxcursion · #7 Fri, January 30th, 2009, 06:52 AM

Quote:

Originally Posted by Power Hungry

Really? I don't remember doing that... All I said was that someone was going to come to your house and replace your Excursion with a 6.2L Suburban. Talk about misleading!

Atleast it would move under it's own power....

AgentOrange · #8 Thu, January 29th, 2009, 10:17 AM

Quote:

I wonder if the intake noise resonates through the truck due to the pipe touching the fender??

No noise so far...
I really don't like the way the 90 degree elbow is fastened to the frame either, via zip tie, but it'll have to do until I can firgue something else out. I don't want to drill any holes in the frame and I don't want to lose the tow hook either.

kokopellimotorsports · #9 Thu, January 29th, 2009, 12:41 PM

Excellent work people.

I am working on a tech section on my website and would like your permission to post this up Jack, and anyone else that would be willing to have it posted. Thanks. I just removed the snorkel and left it open in the engine compartment.

***Jackpine*** · #10 Thu, January 29th, 2009, 01:12 PM

Quote:

Originally Posted by kokopellimotorsports

Excellent work people.

I am working on a tech section on my website and would like your permission to post this up Jack, and anyone else that would be willing to have it posted. Thanks. I just removed the snorkel and left it open in the engine compartment.

Feel free to post anything I've talked about kokopelli - It's NOT copyrighted and it wasn't even my idea. Just my implementation. I've also added an album in my "Albums" on this forum that shows this mod and I've included dimensions in the captions. You may want to look at that too.

I wonder if removing the snorkel and leaving the intake open in the engine compartment is a good idea though? Wouldn't that tend to draw "warm" (less dense) air into the engine, which sort of defeats the whole purpose of an improved intake?

- Jack