Engine Breathing for Performance

Getting your engine to breath better assists in its performance.  Over the past few months I have documented a variety of better breathing examples via my posted pictures.  These are the modern day “porthole equivalents” for today’s racing/autocross competitors.

In some cases, the standard factory vents are still used.  Here are some examples:

 1st generation Toyota MR2 mid-engine vents

WRX STi scoop - Subaru

In other cases, an existing opening’s function is changed to allow better access to more air.  A few examples:

  Lister replica gaping fender vent

Vents on a Z-car hood

These are good examples where form follows function, logic rules over aethetics.  This one (below) is my favorite.  This is Craig’s Teal Turs, as he calls it.  I have seen this first generation Mazda Miata modification done on a number of these cars (the driver side parking light is gone to route cool air directly to the intake air cleaner).  I like it when you can take an existing form and change its function without significantly altering the form.  It’s “aesthetic logic”.

1st generation Mazda Miata parking light vent (look at the left one)

Yesterday, I highlighted the difference of vintage vs. modern day portholes by Buick.  I failed to mention the special limited edition (547 built) 1987 Buick Grand National-GNX.  It had venting portholes (and SO much more), courtesy of factory sanctioned modfications by ASC/McLaren Specialty Products.

1987 Buick GNX

These were desgned to actually pull heat out of the engine compartment while driving.  So, they were functional AND good looking.

GNX vent detail 

Racing Ready is functioning with good form.  The operative concept here is to give you the scoop, and vent every once in awhile.


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2 thoughts on “Engine Breathing for Performance”

  1. “logic rules over aethetics”

    If logic > aesthetics,
    but aesthetics = 0,
    and the car owner’s logic < 0,
    then this makes no sense at all, which is plausible.

    -owner of the teal SM2 miata

    p.s. keep up the good work here!

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