作者: dollar (孔方) 看板: OffRoad
標題: Re: 把 WR400F 變 YZ 版
時間: 東吳機研站 Fri Feb 2 23:39:07 2001
※ 引述《forza (便當)》之銘言：
: 節錄自:Dirt Bike MAY 2000
: 很久前看過的文章但也忘的差不多,前陣子跟孔方聊起,所以又翻出來看,覺得蠻有價值的
: 所以貼出來分享,只要改變排氣凸輪的角度就可讓 WR 成為 YZ 版
: CAM TIMING TRICKS
: How hard is it to change your WR into a YZ? It's harder than it used to be,
: now that YZ is a 426. But changing the cam timing from WR spec to YZ spec
: really isn't a tough job. As we said, it isn't necessary unless you venture
: out on a motorcross course, but here's the procedure, anyway.
: 1.Remove the seat, tank, top valve cover and exhust cam tower.
: 2.Put the engine at TDC (I on the magneto) and check to see that the
: marks on both cam chain sprockets are pointing up.
: 3.Remove the cam chain tensioner.
重點在下面;
: 4.There should be 13 chain pins between the two cams, counting from the top
: mark on one sprocket to the mark on the other. When you are finished there
: should be only 12 chain pins.
: 5.Lift the exhaust cam up and rotate the cam clockwise one tooth.
: 6.Count the links again. The magic number is 12.
應該是說兩個凸輪軸齒輪上的氣門正時記號, 以鍊目來算本來是相距 13 個鍊目
進氣凸輪掛好鍊條後開始算鍊目算到第 12 目, 排氣凸輪順時針轉動一齒後內鍊
掛在排氣凸輪上.....
: 7.Put it all back together your shop manuel is a great help and go riding.
搞不好 wr250f 也是如此?
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※From: 東吳機研 scumotor.twbbs.org dollar From h175.s65.ts31.hinet.net ...
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