XR650R: Is the Rev Limiter doing this?

6 replies to this topic
  • 4Takt

Posted April 01, 2007 - 02:32 PM


My XRR is unplugged, full Moriwaki exhaust, drilled side panel, Edelbrock carb, 15/48 gearing, Maxxis IT Cross tires.

I aired it out on some dirt roads today. At exactly 94mph (according to my Trailtech speedo) the bike starts to stutter as if it is running out of gas. Back it off just a little, say to 90mph, and it will run fine all day long. No other problems whatsoever.

Is that the rev limiter?

  • wickedsprint

Posted April 01, 2007 - 02:46 PM


I have the same gearing and I can hit around 92mph, been told this gearing is close to 100mph, if not over. I am doing this at 6100 feet, so me thinks you might have an issue, although I doubt it is the limiter.

  • 4Takt

Posted April 01, 2007 - 02:54 PM


I have the same gearing and I can hit around 92mph

So what does your bike do when you hit 92mph? Just not go any faster?

Mine seems to pull strong towards 94, like it had the power to go faster, but at exactly 94 it starts cutting out.

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

Posted April 01, 2007 - 04:23 PM


Mine hits 92 in the dirt(meant to clarify), and around 96-97 on the pavement, it just stops accelerating, no sputter, just runs out of steam. You figure at 6100 feet I am down about 20% in rated HP over a sea level bike though.

  • xr650l bum

Posted April 01, 2007 - 04:31 PM


Why not adjust the carb to give it more gas, and see if it helps? Depending on the plug maybe its bogging from to much fuel? Either way you can adjust easily enough.

  • hypersthenos

Posted April 01, 2007 - 07:25 PM


If, when this happens, you let off the gas a little & the bike surges forward a bit then your main jet is too lean. Go up one size & retry.

  • jetski701

Posted April 01, 2007 - 09:09 PM


I'd check it with a tach, or possibably you could tap it out in 4th and see if it feels the same. The cdi doesn't know what gear it's in, so when it hits the rev limiter, it would sound and feel the same. Jetting up will tell you something, and a trailtech speedo may be a little off, might be going faster than indicated!

Related Content


ignitech programmable XR650L CDI by brianhare

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • Hot  60 replies

Fell Off Trailer by usafxr

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • Hot  43 replies

Supercross Preview 2017 Part 1: Championship Contenders by Chris Cooksey

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  186 replies

2015 XR650L Squeaking noise by Crayjay

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 3 replies

Wiseco 101MM Spark Knock Low Engine Temps by imandrewparks

Dirt Bike   Make / Model Specific   Honda   XR600/650
  • 9 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.