If you’ve spent any important period of time round automobile folks, significantly those that drive automobiles with handbook transmissions, then the percentages are good that you just’ve heard the time period “Money Shift” thrown round, normally adopted by a derisive chuckle and/or a pained grimace, adopted by a head shake. But, like, what precisely is a “money shift,” and why is it so unhealthy?
Enter our favourite salt-and-pepper sweetie from YouTube, Jason Fenske of Engineering Explained. He managed to overlook a shift in a Nissan Z on the press launch and, not like most of us who would take that have, bury it deep inside and never speak about it even to our therapists, he made a video about what precisely occurs if you shift from third gear to second at redline, as an alternative of the third-to-fourth shift you meant to do.
Ok, so when you don’t have 11 minutes to observe Jason clarify cash shifting, I’ll provide the TL;DW model. Your engine was designed to function inside a selected rev vary, which is why it’s acquired a crimson line. The higher restrict of that rev vary represents the higher tolerance for abuse that your engine elements will undergo with out injury. When you miss a shift, you continuously over-rev the engine far past its tolerance, and issues will break.
Things breaking within the valvetrain — rockers, timing elements like belts or chains, and so on. — will usually trigger catastrophic injury, which is pricey to restore, therefore cash shift. Of course, as Jason skilled, not each missed shift ends in injury, and thru a mixture of a fast clutch foot, tires breaking traction and a heaping serving to of fine luck, he was in a position to keep away from being essentially the most embarrassed man at that press launch.
Things don’t at all times end up that approach, although, as freelance auto journalist and racing automobile driver Mark Hales realized again in 2013 when he bungled a shift in David Piper’s Porsche 917, leading to a lawsuit in search of $174,000 in damages to cowl repairs to the ultra-rare, ultra-valuable air-cooled flat-12 engine.
What’s the takeaway from all this for you, the spirited driver? Slow your shifting down. You’re not John Heinricy ripping gears in a ZR-1, and that’s OK.