March 29, 2009

Shorter Gear Ratio Myth...

I've heard a lot of people saying, "Mivec gearbox is short ratio one, but if you want even shorter, use 4G13/5 gearbox. Your pick up later ahh, walauwehhh...". This is a crappy statement. Just because 4G13/5 engine displacement is small, not necessarily the gear ratio has to be short. Hell, even the non-MIVEC version of 4G92 gear ratio was even longer than the MIVEC version. Using longer-than-stock gear ratio on MIVEC motor tend to deliver slightly better fuel consumption on highway cruising, less engine noise, but at the expense of engine sluggishness and lower acceleration capability. The graph is a comparison between 4G13/5 gear ratio vs 4G92 MIVEC gear ratio (both test used the same tyre size and the same rpm limit factor). Keep in mind for top speed lovers, most of 1.6L N/A motor can't never reach 140mph because of wind drag. You do the aftermath..

(Green bar = 4G13/5, Red bar = 4G92 MIVEC)

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