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jc777

hot cam or yz cam?

6 posts in this topic

I am looking for more power in my new 04' wr450f and i was wondering which would give more performance the hotcam or yz450?

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if you have done all the gimme mods (airbox, throttle, exhaust ), I would think (whichever is cheaper) would be fine.

You will get a more radical performance curve w/ the YZF vs. WRF cam. You WILL need to rejet to take advantage of it though.

Use JD's jet kit for optimum performance.

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Do the free mod's first then rejet as said before. If you still need more top end power go for the yz cam. :) Rejetting the bike will gain more power than the cam change

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Rejet eh? I have the YZ450 cam and I also have the JD Jetting kit. Here is my question: since I bought and installed the JD kit for my WR, what changes do I need to make if I now have the '04 YZ450 cam?

Please be specific on needle color and settings, and the main jet sizing. I'm in high altitude Colorado.

Thanks! :)

DD

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For Rampart I would put in a 160 main JD red #4 for 45 - 70 degrees. 155 main and JD red #3 for 70 + weather. I ride in Colorado a lot. :)

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so does the cam and jetting make alot of difference?is it worth the time and money?

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