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Polaris RZR Pro XP

SHEARED IMPELLER BLADES?

SHEARED IMPELLER BLADES? Dear Sarge, I own a 2015 Arctic Cat Wildcat 1000. It started overheating after an engine rebuild. The hose out of the water pump that runs to the radiator on the driver’s side is just warm. I suspected a plugged hose. I checked it out, and it was clear. Next, I disassembled the water pump, and found sheared impeller blades; three of the vanes were partially broken off. I ordered a replacement impeller and installed it, and I still had the overheating problem. I checked everything—the hoses, the…

FIXING PRO XP BOTTOMING-OUT

FIXING PRO XP BOTTOMING-OUT One of our chief complaints about the new Polaris RZR Pro XP and Pro XP four-seater is that the rear end bottoms out and scrapes the ground very unexpectedly. Our sources tell us that this machine was actually designed with 32-inch tires, but in the final hour of development, 30-inch tires were installed instead. Although our test car is equipped with on-the-fly adjustable suspension, it still bottoms out in the rear on rutted trails and when driving through G-outs. This fact kept the car from…

WILL ELECTRIC TURBOCHARGERS BOOST UTV PERFORMANCE?

WILL ELECTRIC TURBOCHARGERS BOOST UTV PERFORMANCE? Turbochargers are the key to the massive power current high performance UTVs produce, but like any performance technology, they come with compromises. Will electric turbochargers boost UTV performance higher than ever? Turbo lag causes delayed throttle response as the turbo builds boost. Using larger turbos for more power results in more turbo lag. Formula 1 racing car engines use electric-turbochargers to solve the lag problem, and Mercedes-AMG is bringing the…

2020 POLARIS RZR PRO XP

-- Test drive in the 181 hp machine -- The Polaris RZR platform is an ever-growing and -evolving beast. It came into this world as a tiny 50-inch-wide machine that made it the first UTV able to ride narrow ATV trails. That fact and the aftermarket’s (mainly HCR and Pro Armor) quick reaction to modify it made it an instant hit. In just over a decade, Polaris has pumped out over a dozen versions of the RZR that still cater to everyone from that narrow trail rider to the wide-open desert racer with the 72-inch-wide Turbo S…