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zgrant231

From YZ to WR cam timing?

2 posts in this topic

Im putting a 98 yz400f together i got in boxes. I do mostly woods and trail riding with my 450. Would it be better for me (less pipie) to go to WR cam timing?

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The YZ400 was never "pipey". The downside of the more aggressive timing is that the engine runs a little less smoothly at very low speeds. More people have reset the old WR's to YZ timing and left them there than the other way around. I would suggest you put it together as built and try it that way to begin with. It's easy enough to change later.

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