[Tigers] Air cleaner & horsepower

[Allan Ballard]

Thanks folks, the discussion has been very interesting.

If ever I find the article again I'll report back.

Allan Ballard
Mk1a

On 7/3/12 7:43 PM, Larry Paulick wrote:
> I run a 2" K&N with stock air cleaner, and a stock 5.0 L with F4B and 
> Holley Double Pumper, and roller rockers.  Dyno'ed at 297 hp and 347 
> torque at 4700 rpm. I wanted a torque motor.   I also fabricated a 
> cold air box and reverse hood scoop for positive air pressure, which 
> of course could not be tested on the dyno.
>
> Larry
>
> On 7/3/12 5:50 PM, genepadgett at comcast.net wrote:
>> I don't have the article you are recalling, but I did a lot of 
>> research into this topic myself a couple of years ago.
>>
>> The K&N website has some good info on how their elements flow air 
>> better than various other materials. In terms of shear surface area 
>> the stock filter is woefully undersized. As I remember, even going to 
>> the K&N 2 inch filter was not enough for a motor with any sort of 
>> upper RPM power. I did all the computations about a motor being an 
>> air pump, volume of air moved at various rpm, volumetric efficiency, 
>> etc. Bottom line even the 2 inch K&N filter started choking off the 
>> amount of air flow needed at about 4000 rpm with a 260 motor So any 
>> operation above that threshold you would not be getting enough air 
>> into the motor for optimal performance. Bigger motor, bigger problem. 
>> Does it equate to 30 HP? I have no idea, only a dyno could tell. And 
>> the dyno run should be with the hood closed, if that can be done.
>>
>> Just my 2 cents.
>>
>> Gene
>>
>> ----- Original Message -----
>> From: "Allan Ballard"<aballard at ix.netcom.com>
>> To: "Tiger's Den"<tigers at autox.team.net>
>> Sent: Tuesday, July 3, 2012 3:58:53 PM
>> Subject: [Tigers] Air cleaner&  horsepower
>>
>> Somewhere I read that the factory air cleaner costs 30 horsepower 
>> compared to
>> a free flow filter.
>>
>> The coveted factory air cleaner housings look great nonetheless :)
>>
>> A friend challenged the 30 figure and now the article that I read has 
>> gone
>> missing.
>>
>> Does anyone have information on the factory air cleaner's impact on 
>> horsepower
>> ??
>>
>> Rgds
>>
>> Allan Ballard
>> Mk1a
>> _______________________________________________
>>
>> tigers at autox.team.net
>>
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/archive
>> Forums: http://www.team.net/forums
>> Unsubscribe: 
>> http://autox.team.net/mailman/options/tigers/genepadgett@comcast.net
>> _______________________________________________
>>
>> tigers at autox.team.net
>>
>> Donate: http://www.team.net/donate.html
>> Archive: http://www.team.net/archive
>> Forums: http://www.team.net/forums
>> Unsubscribe: 
>> http://autox.team.net/mailman/options/tigers/lpaulick1@verizon.net
> _______________________________________________
>
> tigers at autox.team.net
>
> Donate: http://www.team.net/donate.html
> Archive: http://www.team.net/archive
> Forums: http://www.team.net/forums
> Unsubscribe: 
> http://autox.team.net/mailman/options/tigers/aballard@ix.netcom.com