How long till my 05, 400ex gets broken in and starts running better? My Mojave only took about an hour. I'm at 100 miles/ 4 hours on the Honda and it still struggles to rev like it's still tight.

 

So you got the EX, huh???

We have a group riding in the high desert next weekend (22nd). Maybe Johnson Valley, or something like that??? Maybe a mountain ride??? You interested???

 

My 05 400AT never broke in without some help, after 16 hours of thing chugging along and 1 trip to the dealer, i paid the total unreasonable price to have the 20 hour service which is basically a lube job and value check. My values were super tight and even then they had to change jets (i'm the rockies, so elevation attributes to that). Now she starts greats and I can't wait to test her on the slopes, waiting for some rear spacers to show up so I can mount 26" outlaws, which of course will suck all the power gained by the new jet . . . oh I love my V-Twin.

 

Ya lemme know whats happining.

 

Just got a sweet deal on a new 04 400EX. I'm so excited about riding that I'm not sure what to do with myself. CAN'T WAT!!!!!

 

20 hours on my rancher and it still seems tight. Just give it time and dont beat on it too much! you'll overheat the rings (that's what's tight) on the piston and they will lose their tension, and in a couple years it will be burning oil and have no power because you were too hard on it. Just drive it normally, avoid long-term wide-open riding (a couple few-second bursts from time to time are good)

 

I have not been able to ride much this past week. I just checked the valve adjustment which was fine and changed the oil and filter.

I think i need to go on a long ride and not 3-5 mile rides to the bar[img]i/expressions/face-icon-small-tongue.gif[/img]

 

There really is no "break in" time needed on todays motors. The worst thing you could do to it is baby it. You need to put a little stress on the motor when new so you get a good, tight seal between the piston/ rings/ and cylinder. If you don't, you'll use more oil later. You definately won't overheat your rings, whatever that means.

I took a tour of the Honda plant last year. You know what the first thing they do to a newly assembled quad is?

They put it on the dyno, and run through all gears WOT, until they hit the rev limiter. They do this three to four times on each quad.

Still want to know how long to break in your new quad?

 

i agree with quad father. break in time is a myth. all break in is, is seating rings. give it hell for a day. the struggle you have could be a fuel problem. my buddy re-jetted his 400 after 200+ hours because it felt sluggish. it runs like a charm now