2nd Gen Non-Engine/Transmission Airbulldog Hood dyno numbers?

[edgerat]

I have mine for sale if anyone is interested, it is one of the first few that Doug made. It came off nathan wrights truck that I bought. just not my style is all.

isaac

 

[JasonCzerak]

so where do I find the 3rd gen hoods that are functional that also work well with an aFe stage 2?



that one 3rd gen in the pictures above does look neat.

 

[Diesel Nut]

Edgerat - Where are you located? I assume you you will need a stock hood in trade? Color?

 

[edgerat]

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[MCummings]

On edit: M Cummings, your post showed up immediately after I posted this. If you do the math, at 2000 rpm the engine is drawing in 1200000 cubic inches of air per minute. Figure the raim air scoop size and tell me if you are forcing that much air into the engine.

Although I cannot do the math (I plead ignorance), I would like to come to bat for your cause. (atleast for a sentance or so. . )



I know that the engine consumes more air as boost increases, so, at 2,000RPM and 0psi/vacuum the engine consumes a set amount of air (which you claim to be 1,200,000c. i. of air) What would that volume be at mearly 10psi?





I would like to believe that my simple mind has assembled my own scientific assumption and say that traveling at 70MPH and the "squeeze" the air experiances passing over the leading edge of the hood that it would be possible to squeeze a little more than 1. 2M c. i. of APM through the "tiny" slots.



My two pennies,

Merrick

 

[BTowler]

My apologies, I added one extra zero, it should be 120,000, and that is if I did the initial math right, 360 divided by 6 is 60 x 2000rpm=120,000 (single cylinder figure). The other way is 360 x 2000=720,000 (all six cylinders). Any way you look at it that is either 69. 44 cfm or 416. 66 cfm, thats alot of air! And that is at 0psi boost!

 

[John]

Hey Doug,



Glad to see you on here! It's been a long time.



My Air Bulldog equipped Ram (1st one in Washington State!) is still down for upgrades. Embarrassing but true. Even more embarrassing, it's been down for 2. 5 years!



And yes, I still need to get that hair-line crack taken care of and the hood repainted... ... hopefully this Spring.





And Edgerat, I have lost track of all the positive feedback I've received on my Air Bulldog induction hood in the last 6. 5 years... it's got to be in the high hundreds.

 

[edgerat]

but when you drive BLACKOUT you are bound to get compliments :--) it just isnt my style and if there arent performance gains that I can find then it does me no good to keep it on there. Different strokes for different folks I suppose. I saw a SRT-4 in your favorite color the other day :-laf

 

[E7mack96]

Being that the Cummins is a 4 stroke, you would really need to divide your result by 2. At 2000 rpm, the motor is sucking air on every other stroke. 360 Cu. In. * 2000 / 2



This would put static air comsumption at 34. 72 cubic feet per minute per cylinder at 2,000 rpms. The total for all 6 cylinders is 208. 33 cubic feet per minute at 2000 rpms.



Now, follow this example: At 70 mph, you travel 6160 ft/minute this is 73920 inches per minute. now assuming an opening of 1. 5 inches x 4 inches, we can get airflow figures. 73920*1. 5*4 = 443520 cu in airflow thru an opening at 70 mph. This equates to an airflow of 256. 66 cubic feet/minute. A headwind would increase this #, as a tailwind it woud be a little lower.



It is entirely possible to build several Lbs of boost just on the airflow. At the very least, it would make the turbos' work easier. I would also think that the seat of the pants meter would definatly show the gain.



What do any of you think?

 

[Air Bulldog]

Hi John

And everyone else and I haven't talked to for so long. All this talk about the hoods makes me wanna make them again. Still been having health problems so I don't think that's in the future. But always love hearing other peoples input into this.

I have been working with an outfit in Blackfoot Idaho that makes hydrogen generators,whole lot of fun. I have picked up a mile and a half to the gallon in town with my Trans Am, on my diesel I haven't seen much change other than my oil stays cleaner longer. 1 gallon of water will yield enough a hydrogen to lift your house off the foundation and turned into rubble. Problem with hydrogen it takes a lot of energy just to make it, but with solar and wind it may work real well. So what's your guy's thoughts on this idea?

Doug Hofeldt

 

[MEby]

I was at the Henry Ford Museum today and they have one of those thin long machines they run on the Utah salt flats to make land speed records. anyhow, it stated there that they used two different scoops and that made a difference of 16 mph top speed. granted they topped out at over 400 mph. record was set in the 1960's I believe. anyhow, just a thought, not that I know much.

 

[Gary - K7GLD]

HeberRam sez:

Gary... Isn't it about time you quit TDR again? Hopefully this time you will stay gone... .

Real sorry to hear that sort of crap coming from you Steve - I have, to this point, thought better of you and expected better behavior than that...



Obviously, I was wrong...

 

[GiesJ]

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Bob -

what is the round area to the left of the scoop?

Sweeeeet photo, thanks for sharing.

JG

 

[GiesJ]

PS - Doug Hofeldt - glad to see you back on here. Hope your health continues to improve.

Jason

 

[HeberRam]

Oooooooooooo

"Real sorry to hear that sort of crap coming from you Steve - I have, to this point, thought better of you and expected better behavior than that...



Obviously, I was wrong... "



Gary,(Mr. arm chair mechanic) you like to dish it out about Lawrence Bolton, but you don't like it given to you???? Gary, just look in the mirror and repeat what you said about me in your comment above, instead use your name. :-laf :-laf

 

[CHornsby]

#ad

OMG! I want one!!!!!!!!

 

[Air Bulldog]

The bump on the left of the scoop is a redirection dome. The way I make a hood it is in 2 pieces and intersection and an outer section the air enters this scoop and is trapped between the two layers. Basically the whole hood is a big air plineum wherever you cut the hole in the underside is where the air air has to exit. The problem with this newer hood the distance between the outside and inside pieces are about one-inch. With the manometer that I talked about earlier I found that when the air has to go from one plane to the other, horizontal to vertical it becomes very restrictive at that point. That is why I made the dome in the outer section of the hood so that this transition would be made easier. Also Inside this hood the water deflector was greatly improved.

 

[JasonCzerak]

The bump on the left of the scoop is a redirection dome. The way I make a hood it is in 2 pieces and intersection and an outer section the air enters this scoop and is trapped between the two layers. Basically the whole hood is a big air plineum wherever you cut the hole in the underside is where the air air has to exit. The problem with this newer hood the distance between the outside and inside pieces are about one-inch. With the manometer that I talked about earlier I found that when the air has to go from one plane to the other, horizontal to vertical it becomes very restrictive at that point. That is why I made the dome in the outer section of the hood so that this transition would be made easier. Also Inside this hood the water deflector was greatly improved.

These hoods, they are made to work with AFE Stage II kits right?



I wouldn't mind a functional version of this hood for hte 3rd gen. kinda neat looking.



Are there any pics of the under side and? maybe a drawing of the chambers and all that ?



Lastly, if you don't make these hoods anymore, who makes something close?

 

[Air Bulldog]

Nobody that I know of. I've tried to get my sons to do this business but they know better. There is a drift boat business that does fiberglass work I may take it to them and see if they want to do it.

 

[BTowler]

Mack, I stand corrected, my apologies to Doug and everyone else, I based my information on a number of articles I had read throughout the years, this has been a hotly debated issue in the past.



Great, now I have to find something else to debunk... (just kidding)