![]() ![]() Although the variable exhaust valve system proved to be somewhat high maintenance, the strength of the motor was beyond question. Next came the 440cc twin found in the race special, the XCR 440. It offered so much brute force power, such snappy, low-end torque that everybody who tried it immediately fell in love with its broad power-band and responsiveness. The 700cc mill came first and it immediately became the rage in the mountain states. Could home-cookin’ compete?Įven the most optimistic visionaries, though, could not have predicted the success of Polaris’ line of U.S.-built, liquid-cooled twins. The snowmobile industry had grown to its modem era with powerplants wholly built in Japan and Austria. ![]() Nobody had built a snowmobile motor on this continent since the Mercury, Scorpion and OMC efforts of the early- to mid-1970s. Clearly the stage was set for the move.ĭespite the prolonged buildup, however, there still was great anticipation. Engineers were being added, new design equipment was being brought on line and the factory in Osceola, Wisconsin, was expanding. The rumors of Polaris building its own snowmobile engines had been hot and heavy for a couple years. ![]()
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