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Hey, does anyone know it there are any differences vetween a zx7 engine and a zx7r engine. I need a new engine and im wondering whether I could use a zx7r engine. Thanks!
 

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far back as I remember (started paying attention in about '92) the engines are the same within the year models. Same bore/stroke ect.

The RR was mostly solo tail, suspension valving, air box type mods...But it has been a decade or so. The last years of the ZX7 had engine updates to the cam chain tensioner, head, carbs, and intake but seems like that was only in the last 2-3 years 2001-2004 ish.
 
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