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

[Longshot270]

First I want to say WOW! this thread has exploded since the first time I skimmed over it. I did the gotts with my 08 4.6L and here are some of the pics.

The first one is the section of PVC that goes into the fender and the second shows how it fits. The big section taken from the 'bottom' of the pipe lets it fit in the flat area of the fender hole snug. The little cuts on the 'top' help hold the pipe in place. I cut it like that because I didn't have any large grit sand paper and I think they work pretty well because they bend to hold the pipe in place. I also used a 3 in flexible coupling to attatch it to the intake. Pretty soon I may work on a ram air type of intake but I'm still working on the idea. Making stuff fit in the 4.6's is difficult. :nerd:

[Jackpine]

David! Glad to see your version here too!

This has become a dynamite thread, hasn't it? I'll be looking forward to what you send in to Bill.

Bottom line, it DOES seem to be possible to have a CAI that doesn't break the bank and that DOES provide increased performance.

Bill - interesting that you think these might be water drain holes. But, in operation, the low pressure effect of the air flowing down the tube would prevent any draining. At rest, of course, water could drain.

Respectfully, sir, I'm not buying it. I think them holes is in there for some other friggin reason. And, it appears to be a Ford, "burn before reading". secret!

- Jack

[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.

EDIT to add: See post #71 in this thread for instructions to make the DWV intake mod.

[AgentOrange]

I'm interested that you removed and capped the resonator inlets. What led you to this approach?

Appearance was the only reason I removed them...I really hated they way they looked. I like the way it opens up the top of engine w/o them.

Believe me, I'm not used to this clean of an engine bay myself...I just bought the truck last October. My previous truck was a lifted '78 Bronco with a 460 last I used to mud all the time. The engine bay in that truck wouldn't come clean, no matter how hard I tried.

Thanks for the comments guys.

[Jackpine]

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]

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]

Jim, I'm certain Bill did not use the AgentOrange design. That's a pretty unique idea I think!

I'm fairly certain it was of the kd4crs ilk, or maybe even just an open tube minus the bellows and snorkel.

- Jack

[AgentOrange]

Originally Posted by JackandJanet

Jim, I'm certain Bill did not use the AgentOrange design. That's a pretty unique idea I think!

I'm fairly certain it was of the kd4crs ilk, or maybe even just an open tube minus the bellows and snorkel.

- Jack

I wish I could take full credit for the idea, but Banks beat me to it.
If you notice, his design also uses the fenderwell inlet.

Check it out: http://bankspower.com/products/show/32/50 lot's of info there.

I doubt my mod makes the power his does, especially because I am still using the stock filter, but the principal is the same.
I think the main point of this and the kd4crs mod is to allow the engine to get as much air as it may need and keep it as cool as possible...plus, I just like to tinker with things.

Just my .02.

[Buckeyes903]

I did this mod on my 08' 4.6, it was quite different since it uses the cone style filter, the PVC pipe is about 4 or 5 inches long.

I will post a picture of it when I get a chance if wanted.

[kd4crs]

I have discussed this with Bill a couple of times and he said that he dynoed this type of mod several years ago when he was working up the calibrations for the EDGE Evo tunes. I believe he said that he also tried it with the snorkel removed just breathing air from the engine bay and it showed about the same gains. Personally, I like the idea of going back to the fender and taking cooler air from the stock location since cooler air is more dense and makes more power. Also that location is less likely to ingest any water unless you manage to submarine the nose of the truck, in which case the last thing you will be worried about is where your intake air is coming from.