[Shotimes] 80mm MAF failure, CLEANING procedure and Materials?

[Donald Mallinson]

Carl,

For the filter to be a restriction, it would have to have a 
very small CU/in cross section in the exit of the filter, or 
it would have to be tiny in total filter area, more on the 
size of a 50's era 2 bbl tiny carb topper air filter.

Give me the length, width and thick ness of the filter along 
with the OD of the big and little end, along with the 
opening size of the end and I can tell for sure.  There is a 
formula in the beginning of the K&N book for figuring the 
size of filter that a motor will require.

here is how they say to compute a filter size for K&N 
filters, it should be OK for any filter similar to a K&N 
(pleated gauze).

First figure Effective Filter Area, for a round filter:

Multipy diameter of the filter time Pi (3.1416) times the 
height of the filter (all in inches) then subtract .75 inch. 
  The .75 is to allow for the rubber seals at the ends of 
the filter.

Then to figure the filter area needed by a specific motor:

multiply the Cubic inches times rpm at peak HP and divide 
that total by 20,839.

For a panel filter to figure Effective Filter Area, multiply 
length by width (only of the filter portion, not the seals).

There is more, but this can give you an idea.

Don Mallinson
hope that answers joe's question.

Carl Prochilo wrote:
> Well then, I need to take extra care of mine!!!
> 
> Not sure how you intended to answer Joe's question.  For instance, I have
> what appears to be an original ShoShop 80mm MAF with an oval shaped K&N
> filter that was sized to fit through the opening in the fenderwell.  The
> original owner of the car had fabricated an aluminum tubing and rubber
> connectors to route the air from the fenderwell to the TB, which made for a
> CAI setup.
> 
> So is this style K&N filter a point of restriction in the air intake or not.