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Old 11-16-2008, 11:05 AM   #1
MatadorMkV OP
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XR650R Mikuni TM40 or Edelbrock?

Can anyone out there tell me which one is best for a 2007 XR650R? With the TM40, do I need a kit and a lot of special items...cables, spigots, etc.?

Thanks,
Russ

MatadorMkV screwed with this post 11-16-2008 at 12:30 PM
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Old 11-16-2008, 11:11 AM   #2
JKL
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Edelbrook from Barnums - comes all set up.
Easy starting and better throttle response.
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Old 11-16-2008, 01:03 PM   #3
MatadorMkV OP
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Yeah, looks like that's the way to go. Seems like pumpers are the answer for big bore 4-strokes. I once put a Dellorto pumper on an ATK605 and the difference was like night and day. I was able to tune the pilot circuit better because the pump took care of the off idle stumble. My guess is that it's pretty much the same for the big XR.

I sent an email using the address on Barnums page, but it was sent back. I'll just have to give them a call.

Thanks
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Old 11-16-2008, 04:30 PM   #4
XRider
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I've got a BRP with the Edelbrock quicksilver pumper, Ive got another XR with an FCR42 and I just installed a TM40 on a BRP for a customer. Of those three carbs the best performer by a small margin is the FCR42. The TM40 is a close second and the 'Brock is dead last and for good reason. The best value is by far the TM40. You can get a kit for the XR from Sudco for $480 and it will come jetted fairly close with cables and extrra jets. The FCR42 kit (also from Sudco)for the XR is $700 and in my opinion is a little better but not $200 better than the TM40. The Edelbrock kit for the XR is over $500 and I'll never buy another one as long as the TM and FCR are still available.

The 650R I just put the TM40 on was stock except for the exhaust and air filter does 3rd gear wheelies without even trying to now. By far the best value for a pumper carb.

Just a little FYI, disconnecting the accelerator pump when jetting this type of carb makes it much easier. After you've got the bike running perfectly reconnect the pump and adjust the shot timing and duration.
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Old 11-16-2008, 04:50 PM   #5
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The FCR is a quality carb and would probably be my pick.
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Old 11-16-2008, 06:06 PM   #6
badcooky
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You are on the money Xrider.
I've just put an TM40 on a my modded XR650r and it's way better than the stocker.The TM40 kit for an XR650R comes with the needle and needle jet way too rich and most people give up,but once sorted out they are awesome.
My pumper is a bit rich but i've just put on a set of Staintune headers so this should be better now.
I will oval bore my TM40 when i go to 680CC.
It feels like it's fuel injected now it's that smooth.
I think the problem with the Eddies is that it only uses a needle and it's only good up top or down low through the settings.
I have an idea for a solution but i don't have an Eddie to try it on.
You know those power now wing things most people buy and throw away, well the secret with them is that they richen up the bottom end and you have to lean it out a size or two.Once this is done they are great.
This could be the answer to the Eddies issue for bottom and top end power.
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