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Part 32: Air Box and Coolant Recovery Tank Fabrication - My 76 Mazda RX-5 Cosmo Restoration

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Published on Feb 26, 2014

While I'm done with air conditioning, part 32 of my '76 Mazda Cosmo restoration still deals with moving air around, as I fabricate a cold airbox. After working so long on the Vintage Air system I wanted to do some simple fabrication, so the air box was a perfect choice. Made to accept a cone filter it is a true cold airbox that draws air from the inner fender. So not only will the box muffle the sound of the engine but it will also assure the turbo is drawing in the coolest air it can. Since I was in an aluminium fabbing mood after the airbox, I also continue on and build an aluminium coolant recovery bottle. Fitting perfectly in the little space between the radiator support and relay panel, made out of square aluminium tubing, it provides a hidden and elegant solution while not taking up any engine bay space. Included in this episode: making cardboard templates, cutting aluminium, bending/shaping aluminium, loads of TIG welding, nutserts, cutting tubing, fabbing a tank, welding bungs.

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