[Tigers] Air cleaner & horsepower

[CoolVT at aol.com]

When Classic Motorsport did their article on a Tiger restoration it seems  
they also mentioned swapping from a stock filter to a K&N and picking up  
serious HP on the dyno.  That article should be easy to search in their web  
site.
Mark
 
 
In a message dated 7/3/2012 5:50:17 P.M. Eastern Daylight Time,  
genepadgett at comcast.net writes:

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  
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