For those of us seriously considering a shaker hood
in the future. I thought it might be wise to pull in
as many FACTS as possible on the shaker hood design.
Mainly CFM and compare them with say the newer FIPK
(large cone and tube).
I know there has already been some discussion on looks
and earlier Cuda shaker design efficiency. Some were
a little vague. Basically we can't compare the cone
and the 14x2.5 element because of the different environment
the shaker offers (Ram Air). I'm not trying to scare everyone
away. If its to early to get the facts, I'll settle for a
little theory and or experience. Here are some basics to
start out with anyway:
14" K&N 2 1/2" tall: 109.9 Square inches (662.7 CFM)
8" cone 138.16 Square inches (833.1 CFM)
(Cudos to Charles Smith, I'm borrowing his calculations)
The question now is "What is the CFM (14x2.5)when RAM AIR is added?"
There has to be tons of variables involved in this question.
so I'll take an average "best guess" from some of the gurus.
Frank, BruceB, Eric, Patrick, Bernd, Shaun?, Charles, Jon?
Bill (Tier), Bob, Doc ? Hehe....Jules...?(shocker!)
Just for grins, heres the great post of CONE, FABM's CFM from Charles:
> I have done calculations of a bunch of air intakes. Using info found here:
> Here are my findings:
> Stock paper filter: 71.875 Square inches (355.78 CFM)
> K&N Drop in filter: 71.875 Square inches. (433.40 CFM)
> 10" K&N 2" tall: 62.8 Square inches (378.84 CFM)
> 10" K&N 2 1/2" tall: 78.5 Square inches (473.35 CFM)
> 10" K&N 2 3/4" tall: 86.35 Square inches (520.69 CFM)
> 10" K&N 3" tall: 94.2 Square inches (555.97 CFM)
> 14" K&N 2 1/2" tall: 109.9 Square inches (662.7 CFM)
> 14" K&N 2 3/4" tall: 120.89 Square inches (728.96 CFM)
> 14" K&N 3" tall (needs mod to rad hose to fit):131.88 Square inches (795.23)
> 6" cone (The one I have) 103.63 Square inches (787.7 CFM)
> 8" cone (I will buy if the need arises) 138.16 Square inches (833.1 CFM)
> Here are some more interesting numbers:
> (CFM ratings on Bruce and Frank's Throttle Bodies)
> Stage II is around 700cfm. Stage one is around 640cfm. factory is around
> 565 cfm... Havnt been back to ;the bench" in a while, but thats what I
> recall as the breakdown...
> Charles smith
> 1999 Dakota R/T RC
> 15.0@95 mph (g-tech)
> Ican2u7176@aol.com (or) Dak99rt@aol.com
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