Showa Aluminum Corporation

Richard Z. Lewanczuk

Toyoji Kaneko

Christina G. Benishin

Minobu Sukimoto

Seijiro Taguchi

Tadashi Usui

Naohisa Hirunuma

Katsumi Yamazaki

Toyoichiro Nogami

Yasushi Akiyoshi

Richard Z Lewanczuk

Christina G Benishin

Peter Kt Pang

A process for producing an intake manifold having a main pipe made of wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the holes, and a plurality of branch pipes made of wrought aluminum material and each having one end fitting in and joined to each of the tubular projections. The manifold is smooth-surfaced in its interior, diminished in resistance to air and improved in air intake efficiency. The manifold requires no finishing procedure unlike those prepared by casting.

Process for producing an intake manifold

An intake manifold comprising a main pipe made of wrought aluminum material and having an open end, a closed end opposite to the open end, a plurality of holes formed in its peripheral wall and outward tubular projections integral with the peripheral wall and each formed around each of the holes, and a plurality of branch pipes made of wrought aluminum material and each having one end fitting in and joined to each of the tubular projections. The manifold is smooth-surfaced in its interior, diminished in resistance to air and improved in air intake efficiency. The manifold requires no finishing procedure unlike those prepared by casting.

Intake manifold and process for producing same

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Osaka, Japan

Toyoji Kaneko