YZ timing, and I didn't even know!
Posted December 09, 2002 - 02:47 AM
Now, I am jetting to Taffy format, but I have a question.
What does YZ timing do, and how does the performance compare with stock WR timing?
As a general interest note, what are the main engine differences between a WR and YZ anyway. With my new jets and timing, have I basically got a YZ?
Still looking for a 60 SJ in the UK, if anyone can help.
Posted December 09, 2002 - 08:32 AM
Ok, just kidding!
As for the question, the WR gets its name from the Wide Ratio transmission. Don't know exactly what the gear ratio differences are, but I think that 2nd, 4th, and 5th in the WR are a little taller in the WR than they are in the YZ.
Performing the timing change in my WR created a bike that reached peak rpm's quicker than in stock form. I found this helped me to "lift" the front end (by throttle as opposed to fanning the clutch) when ever an obstacle presents itself along the trail (I also can eat my buddy up, corner to corner, and he has a tricked out 2000 XR650R!). This quicker revving engine was at the expense of maybe 5 or 7 mph off of top end.
I don't know of many reasons to go back.
Posted December 09, 2002 - 12:41 PM
Posted December 09, 2002 - 10:45 PM
ARD came up trumps. The SJ is on it's way. Can't wait to try out my jet powered WR with YZ timing now!
Posted December 10, 2002 - 01:10 PM