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xr500_89

Lift difference .480 or .370

5 posts in this topic

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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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

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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.

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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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