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Old 05-13-2013, 08:16 AM   #17011
larryboy
Chopper Rider
 
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Joined: Jan 2005
Location: On a set of 50,000 mile tires.
Oddometer: 14,954
Quote:
Originally Posted by Xmoto View Post
I have a question about my BRP. The bike starts and runs great. I has the stock carb that was jetted by the previous owner. When the bike warms up the idle hangs up to high. If I let the clutch out a little to load the engine it will come back down but if I blip the throttle it hangs up again. Any ideas.


Worn slide linkage, it wears pretty fast.


Header wrappers...wrapped the mid-pipe to protect my leg on a TE610, the pipe cracked and blew out shortly after I wrapped it, holds in too much heat IMHO.
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Old 05-13-2013, 11:09 AM   #17012
Shibby!
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Quote:
Originally Posted by jwalters View Post
Minnesota...

Haha. Thats awesome.

Is that how much snow you guys still have?!
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Eat. Sleep. Ride - The Great Divide: http://advrider.com/forums/showthrea...4#post19193704
Go, Get Lost - Heading South: http://advrider.com/forums/showthread.php?t=735690
Dirt Donkeys Do Baja: http://advrider.com/forums/showthread.php?t=671095

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Old 05-13-2013, 11:16 AM   #17013
jwalters
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Location: Little Marais, MN
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Most of the snow is gone, but there is still some on the forest roads that aren't plowed in the winter. Some lakes still have 20 inches of ice on them. Here are some pictures from yesterday.

You can see some remanent pieces of ice here.


Some snow on the trail yet.


This was last week:












Quote:
Originally Posted by Shibby! View Post
Haha. Thats awesome.

Is that how much snow you guys still have?!
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Old 05-13-2013, 11:25 AM   #17014
Shibby!
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Damn..

Even we are ahead of you guys this season.

Little to no snow. You have to head into the mountains to find it with elevation.
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Tour of Idaho T1 Challenge - https://spotwalla.com/tripViewer.php...551f1642711d75
Eat. Sleep. Ride - The Great Divide: http://advrider.com/forums/showthrea...4#post19193704
Go, Get Lost - Heading South: http://advrider.com/forums/showthread.php?t=735690
Dirt Donkeys Do Baja: http://advrider.com/forums/showthread.php?t=671095

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Old 05-13-2013, 03:17 PM   #17015
Slim-Line Tonic
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Joined: Oct 2012
Location: Rider's Riviera
Oddometer: 56
Quote:
Originally Posted by Buell78753 View Post
Hmm,

how many litres in this tank? is it 23?

thought i saw it on the web to fit a dommie...

Nice going on your xr!
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Old 05-13-2013, 04:31 PM   #17016
Shibby!
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Quote:
Originally Posted by Slim-Line Tonic View Post
Hmm,

how many litres in this tank? is it 23?

thought i saw it on the web to fit a dommie...

Nice going on your xr!
Yes, 6.3 gallon.
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Eat. Sleep. Ride - The Great Divide: http://advrider.com/forums/showthrea...4#post19193704
Go, Get Lost - Heading South: http://advrider.com/forums/showthread.php?t=735690
Dirt Donkeys Do Baja: http://advrider.com/forums/showthread.php?t=671095

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Old 05-13-2013, 05:56 PM   #17017
rpmwfo
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Building up the motor on the BRP

I'm looking to get more power out of the bike(I ride from 5000' - 10000'). The elevation takes a toll on power output. I would like to turn the bike into a lightweight adv/dual sport bike. I'd like to run 15/45 gears. Maybe a rekluse to help the tall first gear. I don't plan to be riding too much single track with it, but might be nice to if I fun across a great trail somewhere.

Currently planning to build up the motor on my BRP. Thinking about doing the following:

-XRsonly 11:1 coated piston
-HRC Cam- found one, hopefully it gets here soon, if not I guess I will go with the first Web cam listed on their site
-Kibblewhite black diamond valves and springs- Going stock size
-New cam chain
-Changing from Big Gun full system to XRsonly LE race system with the reverse megaphone design.

Any advice on the above?
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Old 05-13-2013, 08:13 PM   #17018
Capt. Egregious
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Location: Where the sewer meets the sea, Edmonds Wa
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Quote:
Originally Posted by rpmwfo View Post
I'm looking to get more power out of the bike(I ride from 5000' - 10000'). The elevation takes a toll on power output. I would like to turn the bike into a lightweight adv/dual sport bike. I'd like to run 15/45 gears. Maybe a rekluse to help the tall first gear. I don't plan to be riding too much single track with it, but might be nice to if I fun across a great trail somewhere.

If you want to ride lots of street miles for DS'n I would run 16/45. As for power mods the only thing I have done is uncorking the exhaust and installing a TM40(pumper carb.) Plenty of power for me but I'm getting old and have always been slow.
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Old 05-14-2013, 12:19 AM   #17019
rpmwfo
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Already have a TM40. I am not necessarily looking to ride a lot of pavement miles, More connect the many dirt roads, passes, forest service roads, county roads, etc. that criss cross Colorado.

Definitely need more power for the highway work.
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Old 05-14-2013, 12:07 PM   #17020
PeteN95
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Location: Muk, WA
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I'm running a Hot Cams stage 1, Leo Vince header with stock uncorked muffler, and the vented side plate with a Rekluse and 15/45 and it will pull easy 3rd gear roll on wheelies. Put down over 51HP on the dyno, and still a touch lean on top. The high comp piston should help your altitude and give a little more grunt.
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Old 05-14-2013, 10:00 PM   #17021
FlyGuy
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Joined: Oct 2005
Location: Middle of Highway 1 California
Oddometer: 169
Ross piston fail

About 18 months ago I reported on the on the instillation of a Ross piston

http://advrider.com/forums/showpost....ostcount=11442

Well on mothers day near the top of Ebbetts pass, one of the best motorcycle roads I have ever been on. I Highly recommend this road if your in the area.

http://scenic4.org/

The XR started bogging our of the corners, I kept on riding thinking of the high density altitude was the cause , I reached the peak of the pass 8,700 ft and warm out, I started down hill and all was good on the way once I reached 3000 ft and still had the bogg on acceleration I pulled over to try to adjust the mixture, and it died as soon as I let off the gas
oil was leaking out of the air box profusely
well a long story shortened. the piston cracked





Well the ross piston made it near 14,000 miles and made the XR rev easier than the stock piston but I don't think I will buy another one.
Looks like i am going With JE on the next overhaul
Light weight is good til it is int and this is the case of too light.
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Old 05-15-2013, 03:23 AM   #17022
BuRPsa
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FlyGuy,

I think 11:1 is too high to expect infinite reliability, and 14KMi is a lot already.
I got same piston (not installed yet) but a 10.5:1, ceramic coated too, in all better and more reliable I think.
The hotspot sits in-line with the sparkplug it seems - not a too hot grade used? And, what coolant do you use?
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Old 05-15-2013, 04:28 AM   #17023
ZXRaziel
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Flyguy , that looks like a metal casting fault , its rare but it does happpen sometimes , i have seen this before ( wiseco if i remember correctly ) . Just a bad luck really , i bet if you buy another one it would be fine , but then of course heavyer piston ( with more material /alloy ) should be stronger more reliable . Reliability its good .
But i think the JE and wiseco are way too heavy , more than the stocker ,
i think i will give the Ross piston a try at my next rebuild , i want to know what is the difference when running light high comp piston
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Old 05-15-2013, 04:09 PM   #17024
FlyGuy
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Joined: Oct 2005
Location: Middle of Highway 1 California
Oddometer: 169
Quote:
Originally Posted by BuRPsa View Post
FlyGuy,

I think 11:1 is too high to expect infinite reliability, and 14KMi is a lot already.
I got same piston (not installed yet) but a 10.5:1, ceramic coated too, in all better and more reliable I think.
The hotspot sits in-line with the sparkplug it seems - not a too hot grade used? And, what coolant do you use?
Using one step cooler spark plug than recomended, I have been using pre mixed honda (automotive blue) coolant. The tempature stayed below 210f But my cooling fan was fairly running constantly (might have been a help)
I will post a different picture showing a crack on the other side of the wrist pin boss to crown area
I believe the design could easly be improved and still be light, but the XR is not popular enough for ross to get involved?
Additional fillet size is in order at the pin boss to crown
I am now going to contact wossner I like there design alot, take a look at the rotatable picture in the link below of there xr 650 piston

http://www.wossnerpistons.com/images...WOS-8575DA.swf

I am not complaining, as for miles I live in a different neighborhood than you. In KMI there was 22,500 kmi of fun filled riding on the ross piston

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Old 05-15-2013, 04:31 PM   #17025
FlyGuy
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Location: Middle of Highway 1 California
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Quote:
Originally Posted by ZXRaziel View Post
Flyguy , that looks like a metal casting fault , its rare but it does happpen sometimes , i have seen this before ( wiseco if i remember correctly ) . Just a bad luck really , i bet if you buy another one it would be fine , but then of course heavyer piston ( with more material /alloy ) should be stronger more reliable . Reliability its good .
But i think the JE and wiseco are way too heavy , more than the stocker ,
i think i will give the Ross piston a try at my next rebuild , i want to know what is the difference when running light high comp piston
Well Id bet its a cyclical load issue due to flex
I am also familyer of the weisco issues where the metal on the inside looked marbled indicating impurities and what you indicate happens as a cause.
but look at the picture in my post above and it becomes more clear.
And Hell ya go for the light weight and you wont go back.
but check out worrsner pistons too. I am going to try to find out there piston weights
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