[Tigers] Air cleaner & horsepower

[Sandy Ganz]

My tiger has a small round K&N with the K&N filter-lid or what ever they call
it. It seems to have a lot of open surface area so I'm sure it helps but
likely 
not a big deal on the old tired stock 260 that's in the car. It looks
like it 
has some rubbing issues but seems to fit under the hood with a bit of
finessing. 
This is on a F4B with a Holley 600.

Sandy



----- Original
Message ----
From: "Teepen, Jere" <jteepen at usatoday.com>
To: "Smit, Theo"
<Theo.Smit at dynastream.com>; Allan Ballard 
<aballard at ix.netcom.com>; Tiger's
Den <tigers at autox.team.net>
Sent: Tue, July 3, 2012 3:41:35 PM
Subject: Re:
[Tigers] Air cleaner & horsepower

Me again.

The results of Tim Ronak's use
of the device mentioned below (Stub Stack?) was
virtually no change IIRC
(questionable).

Tim was still on this e-mail list at one time.  Are you still
there?  Can you
confirm/dispute my recollection?

Jere

-----Original
Message-----
From: tigers-bounces at autox.team.net
[mailto:tigers-bounces at autox.team.net] On
Behalf Of Smit, Theo
Sent: Tuesday,
July 03, 2012 2:08 PM
To: Allan Ballard; Tiger's Den
Subject: Re: [Tigers] Air
cleaner & horsepower

There are two things that affect the performance of the
air cleaner: first,
that the element is only 1.5 inch high, and that limits
the amount of airflow
that the filter can sustain (although that may still be
more than adequate
for
most performance levels); second, that the air has to
turn a very sharp
corner
from the filter plenum to the throat of the
carburetor. The choke air horn
also restricts the airflow. There was a company
that made an airflow
deflector
that was supposed to reduce the loss due to the
sharp corner - I forget the
name, but IIRC Tim Ronak dyno tested it.

I am
running a 2 inch tall K&N element in my factory air cleaner, on an F4B
manifold, and it seems to clear the hood. Other combinations are taller or
tilt the carb differently and this causes the air cleaner to hit the hood...
YMMV.

Cheers,
Theo
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