Max Stock Xr650r HORSEPOWER


2 replies to this topic
  • Hondathumper450

Posted February 18, 2007 - 05:34 PM

#1

Whta is the max horsepower from a stock xr650r uncorked of course.
Stock carb, stock piston setup. What is the max horse power that people have gotton out of their stock XR650R?
Just got mine not long ago and ust curious as to what thes Pigs will do. Is it true that pigs WILL Fly?
I am sold on the NGK Iridium spark plugs as it seriously starts my Pig much easier and quicker than a stock plug and am seriously stuck on that statement

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  • BWB63

Posted February 18, 2007 - 09:11 PM

#2

stock and uncorked 44rwhp (55bhp) with header/muffler/UNI/Carburetor Just over 48rwhp. HRC piston/Cam 52rwhp (64bhp) 680cc with all the goodies 56~58rwhp (68~72bhp)

http://www.xr650r.bo.../dynocharts.htm

http://xr650r.borynack.com/

Posted Image

  • huntmaster

Posted February 19, 2007 - 01:30 PM

#3

Whta is the max horsepower from a stock xr650r uncorked of course.

When the bike was new Dirt Bike magazine did a dyno shootout of various pipes vs stock (uncorked). They all put out around 50 hp at the rear wheel except for the ridiculously loud (at least at the time...not my words) Big Gun system which increased hp to a 51!





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