XR600 or XR650L? engine


3 replies to this topic
  • 1stroke

Posted October 07, 2004 - 05:44 PM

#1

Am building a Street legal flattrack bike
and was wondering, use a XR600 engine or a 650L?
Which has more poop? Have ridden several stock and warmed over 600's, but never a 650L? am leaning towards a XR600 as there is a huge aftermarket of hop up parts.
Is bigger better? In this case?
I know the XR is normally a dirt bike engine and the 650L is
street legal. But which puts out more torque? HP? weight?
ETC.
I think I know the answer, but have to ask.
:cry: :cry:

  • BWB63

Posted October 07, 2004 - 06:23 PM

#2

They are basicly the XR600 and XR650L are the same engine....the XR650L has more displacment+more torgue and more HP....the XR650R engine is water cooled way more power.

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  • 1stroke

Posted October 07, 2004 - 08:52 PM

#3

Have ridden XR650R's,
looking for air cooled info for this project.
Have never ridden a 650L.

  • HeadTrauma

Posted October 08, 2004 - 02:50 PM

#4

They are nearly the same except the 650L has electric start and a 100mm bore with an 82mm stoke. The 600 has 97mm x 80mm bore/stoke. You could probably take 600 parts and make the 650L a kick start. Aftermarket is essentially the same with the 650L making more power and torque. You can big bore it to about 675 also.





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