Engine differences - 2003 & 2006 - 600RR.net
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post #1 of 3 (permalink) Old 08-12-2014, 07:50 AM Thread Starter
Training Wheel Hero
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Engine differences - 2003 & 2006

Hi all

Struggling to find info regarding differences on the engines between the 2003 and 2006 model. Only seen guys mention that when swapping a 06 motor into a 03 frame, one needs to fit the 03 throttles on.

Can anyone advise whether there are differences between the engines?
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post #2 of 3 (permalink) Old 08-21-2014, 04:10 AM
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Not much help but I know the head is different. The 06 will have a lot more midrange power. Other than that I'm no help haha
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post #3 of 3 (permalink) Old 08-28-2014, 06:18 PM
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Cylinder head ports are the biggest change.

'06 F4i- Yoshimura RS-3C, Racetech springs and valves, Ohlin's rear shock, steel brake lines, 520 conversion. 87k miles and counting.....
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