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View Full Version : what size motor to put on a 250X frame


KY250XXX
05-12-2002, 07:57 PM
i need a bigger motor, i want more power.. ne suggestions
NJ300ex
05-12-2002, 08:12 PM
350X engine. Its the easiest to do and has been done the most before. Powroll sells engine mounts and an exhaust for this swap.
05-12-2002, 08:23 PM
yes, the 350 x motor makes them fly!
crookedeyemoto-x
05-12-2002, 09:09 PM
350x
KY250XXX
05-12-2002, 10:17 PM
i was goin to get one. but someone told me they have probs with 350x's
05-12-2002, 11:32 PM
ky, where you live?
PDunes300ex
05-13-2002, 11:42 AM
CBR 600 streetbike engine :blah
05-13-2002, 04:30 PM
sell it and get a 250r or 400ex.
i also thought of putting a 350x motor in my 300ex because i wanted more power......i sold it and now im looking for a 250r
Chef
05-13-2002, 04:56 PM
XR650...bored and stroked to over 750, running taller haulers, smooth buffs, and a plus 12 swingarm...all chrome :macho
KY250XXX
05-13-2002, 06:21 PM
i livei n hopkinsville, where do u live
05-14-2002, 03:53 PM
paducah
2qk4u
05-14-2002, 09:30 PM
1000cc R1 engine. this is the best route to go. I promise you wont be beat.
cdalejef
05-15-2002, 03:22 AM
Originally posted by KY250XXX
i was goin to get one. but someone told me they have probs with 350x's

I ran a 350X motor in my R for 2 GNCC seasons without one problem. Just make sure the motor you get is in good shape and keep the oil changed often. You may want to add an aftermarket oil cooler cause they do run hot.
You don't need a kit to bolt it in, just a little triming off the rear motor mount and upper right frame rail and it slides in. If you decide to go that way, bring it up and I'll put it in for ya.