Lift difference .480 or .370


4 replies to this topic
  • xr500_89

Posted May 09, 2006 - 09:47 PM

#1

is there much difference in performance ?

  • goofour

Posted May 11, 2006 - 01:19 PM

#2

That is a big difference. It will move the power band to a higher rpm, put more strain on your valves and valve spring, suck more gas and double your fun factor. Go for it!

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  • xr500_89

Posted May 11, 2006 - 03:21 PM

#3

well i guess im going with .370 lift valve springs, less strain is goo i want some engine life and i wont have to wait another week for the bike to be done

  • wr450fyamaha

Posted May 12, 2006 - 08:02 AM

#4

well i guess im going with .370 lift valve springs, less strain is goo i want some engine life and i wont have to wait another week for the bike to be done



I would have to agree with ya there, I'm for more power but you still want that xr reliability. And you have a 11/1 and a hot cam coming, that should do ya fine.

  • xr500_89

Posted May 12, 2006 - 02:16 PM

#5

well actually right after decdiding that i found some kibblewhite vlavl spring .46 lift you 60 dollars cheaper than xrs only so im going with that, so either way i think im going to be happy, if i have to i'll pick up another cheapo engine and rebuild that one too dunno what im gonna do i just want to ride!





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