STM's 864 WHP EVO RS Takes the 8 Second Crown
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STM's 864 WHP EVO RS Takes the 8 Second Crown
Read the full article here http://dsportmag.com/the-cars/stm-86...-second-crown/
It’s been said that records are made to be broken. After setting the quickest elapsed time record for a 2.0-liter 4G63 EVO, Emery Kapral and STM’s “Ricer” (an 8-second EVO VIII featured in Issue #97 of DSPORT) arrived at a crossroads. “We had to make a tough decision. Since Ricer was not built with the intent of becoming a full racecar, it still had all of its power features intact. To go quicker and faster, Ricer would have to become a dedicated racecar, losing much of what set it apart from the crowd. It seemed like a waste to strip it down,” Kapral said. Instead, Kapral chose the path to build a capable successor to the 8-second crown.
To transform the RS in to full-race trim, STM would transplant Ricer’s engine into the RS. Once Ricer’s engine was pulled, the hard-blocked 4G63 was refreshed. As part of an annual maintenance process, a new set of GRP aluminum connecting rods and Buschur Racing-spec JE Pistons filled the block. Up top, STM’s 650 camshafts replaced the custom Buschur Racing cams used previously. Kapral explained, “The custom Buschur cams delivered excellent midrange power, but these cams hit their peak before the engine’s 10,000 RPM redline.
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