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wr to yz cam timing - Jetting issues?

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I posted this in the jetting forum but did not get a response...

This weekend I'm planning to switch my exaust cam from wr to yz timing (2002 wr250f) I have installed the JD jetting kit as per excellent instructions. Riding at sea level to ~2000 feet and cold, the current settings are:

BLUE needle 5th clip

#185 main

Fuel screw 2 turns out.

the rest is stock

Its running great, with only a tiny off idle bog. BK mod and AP pump timing to follow.

I'm just wondering if anyone has had to re-jet after making this change?

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dont know about the cam change jetting, i would think there would be jetting changes, by the way. i have the same bike same basic mods, but no bog! i do have a zip ty fuelscrew and that helps a ton. good luck on your cams . :)

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The answer is self evendent. Look at the stock jetting for a YZ vs a WR. There is a difference in jetting so if you swap out for e cam I would expect a jetting change would be in order.

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just put the 03 yz cam in my 02 wr250 last night ,man what a difference it makes in kicking the bike now,its real easy.

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