YZ450F or YZ250F for Woods Riding


43 replies to this topic
  • Navaho6

Posted April 02, 2012 - 08:48 PM

#1

I rode a CRF250R last weekend which once again confirmed that I need to ditch the WR450. It's been a fun bike but it's wearing me out with the weight and soft suspension.

The problem with the CR was a major lack of low end grunt. Other than that, it was fantastic bike. Suspension and handling were great but I want a Yamaha, and I hear the YZ250F has a lot more low end power. So I need to decide if it will be the 450F or a 250F. Our trails are fairly tight in places (bar banging tight) but most of our trails are 3rd gear on the WR.

After reading up on the two bikes and talking with others, I've heard the following negative comments:

2009 YZ450F:
Tends to overheat easily


2009 - 2010 YZ250F:
Not enough power
Flames out often

I'd like to get your comments on the above.

I think I would like the 250 more because of the lighter weight and smoother motor but I don't want to be riding at high rpm all the time to make it go. And if it is going to flame out constantly in the thickets, it's not the right bike.

Edited by Navaho6, April 02, 2012 - 08:49 PM.


  • Sierra_rider

Posted April 02, 2012 - 09:09 PM

#2

I had both a wr450 and a yz250f. Although heavy, I liked the power on the wr much more. The 250f could have used more low end and flamed-out at the most inopportune times. Add to that, the 250f easily overheated. Went back to a 2 stroke and solved all those issues. :thumbsup:

  • Navaho6

Posted April 03, 2012 - 03:50 AM

#3

I wish I could go back to a 2-stroke. That would be easy but all of them make my hands go numb almost instantly. I had a 300exc which gave me carpal tunnel and ended my riding for 2 years.

It has to be a 4-stroke.

So, is there anything you can do to lessen the flame-outs? My WR rarely does it. When I do stall it, most of the time it is due to rider error.

  • Schpenxel

Posted April 03, 2012 - 12:39 PM

#4

Flywheel weight, perhaps?

  • Gunner354

Posted April 04, 2012 - 01:05 PM

#5

I rode a CRF250R last weekend which once again confirmed that I need to ditch the WR450. It's been a fun bike but it's wearing me out with the weight and soft suspension.

The problem with the CR was a major lack of low end grunt. Other than that, it was fantastic bike. Suspension and handling were great but I wIant a Yamaha, and I hear the YZ250F has a lot more low end power. So I need to decide if it will be the 450F or a 250F. Our trails are fairly tight in places (bar banging tight) but most of our trails are 3rd gear on the WR.

After reading up on the two bikes and talking with others, I've heard the following negative comments:

2009 YZ450F:
Tends to overheat easily


2009 - 2010 YZ250F:
Not enough power
Flames out often

I'd like to get your comments on the

I think I would like the 250 more because of the lighter weight and smoother motor but I don't want to be riding at high rpm all the time to make it go. And if it is going to flame out constantly in the thickets, it's not the right bike.


Your statement regarding the 09 yz450 overheating easily is false!!!!!!

Edited by Gunner354, April 04, 2012 - 01:07 PM.


  • grayracer513

Posted April 04, 2012 - 02:33 PM

#6

Your statement regarding the 09 yz450 overheating easily is false!!!!!!


Relative to what?

  • Navaho6

Posted April 04, 2012 - 03:43 PM

#7

Your statement regarding the 09 yz450 overheating easily is false!!!!!!


Great! I'm now leaning more towards the 450 because I don't ride much when temps get above 85F and I like the power of the 450. I'm afraid that the 250F will not have the torque that I need.

  • Gunner354

Posted April 04, 2012 - 03:45 PM

#8

Relative to what?

His statement of mostly 3rd gear riding.

  • Yamiryder

Posted April 04, 2012 - 05:26 PM

#9

Great! I'm now leaning more towards the 450 because I don't ride much when temps get above 85F and I like the power of the 450. I'm afraid that the 250F will not have the torque that I need.

If you do a lot of slow, 1st gear, long idling riding, it will probably still overheat. Light trail riding it should be fine

  • Gunner354

Posted April 04, 2012 - 06:47 PM

#10

If you do a lot of slow, 1st gear, long idling riding, it will probably still overheat. Light trail riding it should be fine

Zero boil over with waterless Evans coolant

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • Sierra_rider

Posted April 04, 2012 - 08:21 PM

#11

Zero boil over with waterless Evans coolant


Doesn't make it run any cooler, just boils at a higher temperature.

  • Navaho6

Posted April 05, 2012 - 12:24 AM

#12

If you do a lot of slow, 1st gear, long idling riding, it will probably still overheat. Light trail riding it should be fine


My WR will boil under those conditions.

We are doing mostly 2nd and 3rd gear riding, hard on the throttle.

  • Yamaryder29

Posted April 05, 2012 - 04:19 AM

#13

Great! I'm now leaning more towards the 450 because I don't ride much when temps get above 85F and I like the power of the 450. I'm afraid that the 250F will not have the torque that I need.


You'll definetly like the 450 better than the 250f, especially if you were already riding a wr450f. the wr450f is a brick compared to the yz450f.

Edited by Yamaryder29, April 05, 2012 - 04:19 AM.


  • briangriff321

Posted April 05, 2012 - 05:50 AM

#14

I rode my 450 in an enduro with some really tight trails( running full width bars) this past weekend on my 2012 450 and i didnt have any overheating issues now i was trying to go through sections fast as possible but there was some sections that i had to stop and bar twist to get through

  • Navaho6

Posted April 05, 2012 - 12:35 PM

#15

I rode my 450 in an enduro with some really tight trails( running full width bars) this past weekend on my 2012 450 and i didnt have any overheating issues now i was trying to go through sections fast as possible but there was some sections that i had to stop and bar twist to get through


Was that LTR at Fort Polk?

Edited by Navaho6, April 05, 2012 - 12:36 PM.


  • briangriff321

Posted April 05, 2012 - 01:35 PM

#16

Sho was

  • Gunner354

Posted April 05, 2012 - 03:31 PM

#17

Doesn't make it run any cooler, just boils at a higher temperature.



That is partially true. It may keep it from boiling over due to high boiling point, but it will not in most conditions get hot enough to hurt the motor.
I have a coworker that is an A level rider and punched a hole the lower part of the radiator during a race. He continued to race a hare scramble for another hour with only Evans in the cylinder and the motor did not seize.

  • grayracer513

Posted April 05, 2012 - 05:08 PM

#18

Some people might believe that. Don't expect it of me.

  • Navaho6

Posted April 05, 2012 - 06:22 PM

#19

Sho was


I was there also. Excellent trail, especially the moguls area.

Only saw one newer YZ450 there.

I'll get to test one out this weekend maybe. I'll judge the 450 by whether it makes my hands numb and/or wears me out too fast. The test for the 250F will be if it has enough torque.

Edited by Navaho6, April 05, 2012 - 06:27 PM.


  • Gunner354

Posted April 05, 2012 - 06:44 PM

#20

Some people might believe that. Don't expect it of me.


Don't really care!!!!!
It is 100% true.
So, have you been in this scenario? Obviously not!





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