“I’m hoping for well over 180 horsepower,” says Anders Dynehäll, who has just finished the build on this big-bore Yamaha XJR1300 café racer. “Over 200 horsepower should be possible, if I haven’t screwed up the port job.” Dynehäll based the entire build around the XJR’s air-cooled, inline-four engine, which he bored out to 1,412 cc; “The rest of the bike is there, more or less, because I wanted something cool to put the engine in,” he says. Using high-compression pistons, Carillo connecting rods, oversized valves, racier cams, and a set of 40mm of Yoshimura carburetors, Dynehäll turned the XJR’s smooth-running four-pot into a snarling race motor, and he tells us, “Break-in is now about halfway through, and I haven’t been over 6,000 rpm yet, but in a month I have an appointment with a dyno, and then I hope to have some numbers.”

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