New Owner of 2001 XR650R

5 replies to this topic
  • red_rider_elsinore

Posted February 25, 2008 - 09:18 AM


I aquired a good condition xr650r from a local shop. It came with a Pro Circuit T4 exhaust, Tag 1_1/8 bars, rht foot peg mod. Everthing else is stock. I was told the bike is uncorked, but it just doesn't feel fast. It feels torquey but not strong. I thought I would twist the throttle and it would lift the front. For jetting it has a 175 main and 65 pilot. I lubed the throttle cables because the throttle didn't feel smooth. As for mods I ordered an early 90's glass headlight, Fork Skins, and SmartPerformance oil. I'm getting ready to rewind the stator, install a DC rectifier and battery. I do a lot of night riding and I use a helmet light wired do the bike on my quad. I rather convert to DC for the lights and its easier to wire electronics. I use a Garmin Vista HCx and would like to be able to wire into the bike.

What do I check in the bike's jetting to make sure its running good. It didn't feel as fast as my yz426f.

I broke the front brake caliper mounting braket last night. I inserted the top bolt into the bottom hole. The bolt was too long and it cracked the mount, and a piece fell off. Do they sell the mounting bracket or what else can I do.

Does anyone have the stock rear light. The guy before me removed the light and the socket assembly.

P.S. I love the bike. I hit 87.7 on my gps. I live in the desert and close to Baja.

  • martinfan30

Posted February 25, 2008 - 09:29 AM


Look here for 650R tips.

  • jdubb75

Posted February 25, 2008 - 10:05 AM


I'm not sure what altitude you're at, but here's what works for me at about 500'.

175 main
68s slow
B53E needle w/clip in middle position

You will also want to check the carb insulator (between carb & engine) and make sure it has a full circle opening. The stock resctricted one has a rectangular opening that restricts air flow. While you're at it make sure the plugs have been pulled from the airbox.

The site martinfan posted has a lot of dyno charts and a gearing spreadsheet that will help you gear the R to take advantage of the torque and hp that it so graciously wants to serve up. On mine anyway...once you break through the initial arm jerker it falls off. It's not a 450R/X with a high rpm hit. It should definatley lift the front with ease at the turn of the wrist though.

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  • red_rider_elsinore

Posted February 25, 2008 - 12:21 PM


I"m at sea level. I was thinking of opening up the airbox. It still have the stock airfilter and screen. I'm looking at changing it to a UNI. Will that make a huge difference?

  • jdubb75

Posted February 25, 2008 - 12:45 PM


I"m at sea level. I was thinking of opening up the airbox. It still have the stock airfilter and screen. I'm looking at changing it to a UNI. Will that make a huge difference?

I just got my UNI in the mail a couple days ago, but have got it on the bike yet so I don't know the answer to that.

If your bike still has the airbox plugs in it you will definately have to remove them, replace the restricted carb insulator and jet as I specified earlier to make it run right.

If the previous owner just installed the slip-on and a 175 main you are nowhere near uncorked yet. The parts are cheap and the hp gains are huge for the money spent.

  • LuckyLook

Posted February 27, 2008 - 09:27 AM


What is the effect on your fuel consumption with the larger jetting and uncorked R? Coming from a overland perspective i mean?

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