Two exhaust head pipes shown flange-on to compare port openings,…

Two stainless exhaust head pipes stood side by side on a workbench edge, photographed straight into their two-bolt oval collector flanges to compare port openings — the left one carbon-blackened inside, the right one clean and freshly ported. Both tubes bend away toward the dark background.

AI caption February 2009 · Photo 271 of 465