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Old 02-23-2013, 06:24 PM   #54676
AZ TOM
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Joined: Oct 2008
Location: Prescott AZ
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Quote:
Originally Posted by wbedient View Post
I got out for my first ride this year. The BRP is a handful in the snow, and I am not ashamed to tip toe through the snow with it.

Video of today's exploits:


I had to go put on a jacket about half way through this video, burrr
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Old 02-23-2013, 06:49 PM   #54677
ONandOFF
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Location: Shenandoah Valley riding wonderland
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Quote:
Originally Posted by wbedient View Post
I got out for my first ride this year. ... Video of today's exploits: ...
Looks like a good ride given the conditions. I would also turn around where you did.
Makes me miss riding even more though.
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Old 02-23-2013, 07:00 PM   #54678
marlinjames
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Quote:
Originally Posted by marlinjames View Post
I just got doing the dave's mod and it all went smooth. bike started right up barely had to tap the starter. i let it wram up for a awhile and took it for a ride. it runs fine at about a quarter throttle but if i open it up it jokes out and spudders but still kinda accelerates. Guessing i have the air fuel mixture off? i backed it out the 2 1/2 turns.
Im at sealevel in washington state with stock exhaust. oh and i used a 55 and a 155 jets, it was suggested to use a 158 but had already ordered the 155 and couldnt find one local so i figured i would try it. its in my shopping cart for my next order
I taped off the snorkle area and it got better then ran it with the choke on and stayed about the same, then went to a 160 jet and it got a little better. But now when im out on the road i have no acceleration in any gear or any rpm? i thought about going to a 165 jet but then read this and think
i might put the stock jets back in?
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Old 02-23-2013, 07:46 PM   #54679
RZRob
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Location: Anaheim Hills, CA
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Quote:
Originally Posted by ONandOFF View Post
the usual suspect is the CDI unit.
Ding ding ding... Was researching concurrently and everything pointed to this. Decided to go out and give it a tap. Got my spark back.

Pesky CDI unit.

RZ Rob
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Old 02-23-2013, 07:50 PM   #54680
techforlife
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Location: Moncton,New Brunswick
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Quote:
Originally Posted by RZRob View Post
Ding ding ding... Was researching concurrently and everything pointed to this. Decided to go out and give it a tap. Got my spark back.

Pesky CDI unit.

RZ Rob

http://www.thumpertalk.com/topic/881...lp-cdi-repair/








B
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Old 02-23-2013, 07:53 PM   #54681
mcma111
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Quote:
Originally Posted by RZRob View Post
Ding ding ding... Was researching concurrently and everything pointed to this. Decided to go out and give it a tap. Got my spark back.

Pesky CDI unit.

RZ Rob

Looks like your in the market for a new CDI.
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Old 02-23-2013, 07:55 PM   #54682
ThumpnRed
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Joined: Aug 2009
Location: Eye Duh Hoe
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Quote:
Originally Posted by RZRob View Post
Ding ding ding... Was researching concurrently and everything pointed to this. Decided to go out and give it a tap. Got my spark back.

Pesky CDI unit.

RZ Rob
That's why I have a spare with me whenever I go out and play in the woods...
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Originally Posted by Cigar Mike :With plastic buy two.
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Old 02-23-2013, 08:43 PM   #54683
RZRob
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Quote:
Originally Posted by techforlife View Post
Yes, good read. Thanks.

Quote:
Originally Posted by mcma111 View Post
Looks like your in the market for a new CDI.
Yes sir, I believe you're right - or better yet, one that's already had the treatment done.


Quote:
Originally Posted by ThumpnRed View Post
That's why I have a spare with me whenever I go out and play in the woods...
That or a big rock. Good idea.

RZ Rob
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Old 02-23-2013, 09:31 PM   #54684
HeadTrauma
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Location: Antelope Valley, SoCal
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Quote:
Originally Posted by techforlife View Post
if a fuel injection system is in open loop it relies heavily on the coolant/intake temp sensors for fuel mangement.........

B
Open loop can actually work pretty well (certainly no worse than a carburetor) and a lot of first generation systems ignore the O2 output at high load anyway. Now that many new cars come with wideband sensors, they can monitor AFR all the time.

Quote:
Originally Posted by techforlife View Post
1.) Fuel injection is hands down the best way to fuel an engine,,,

2.) bikes seem to be problematic usually due to enviroment/dirt and the fact they can`t seem to make a decent fuel pump
1.) I agree.

2.) Offroad bikes are hard on electronics in general, especially singles. If it's not water or dirt intrusion, then the vibration kills something. The XRL's CDI is an example and those are potted in epoxy as you already know. The MegaSquirt ECUs I have with all the through-hole components would not fare well on an XR. One with all SMD components like a MicroSquirt or pcb v3.57 would be much better options.
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Old 02-23-2013, 10:19 PM   #54685
RZRob
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Location: Anaheim Hills, CA
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Muffler Mounting Point

Hi Folks,

So, I've got a couple XR650Ls and both have FMF exhausts. One has the PowerCore 4 with PowerBomb and the other has the Q2.

So, I'm noticing two mounting choices:
So most, including mine (this isn't my bike) have the hanger mounted here


But others (including my Q2) are mounted further forward.
I think aesthetically I like the further forward, but I don't think that would be as strong or maybe even not strong enough.

What do you guys think? Is one "right"?

RZ Rob
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Old 02-23-2013, 10:31 PM   #54686
fritzcoinc
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Location: Cypress, Tx
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Quote:
Originally Posted by RZRob View Post
Hi Folks,

So, I've got a couple XR650Ls and both have FMF exhausts. One has the PowerCore 4 with PowerBomb and the other has the Q2.

So, I'm noticing two mounting choices:
So most, including mine (this isn't my bike) have the hanger mounted here


But others (including my Q2) are mounted further forward.
I think aesthetically I like the further forward, but I don't think that would be as strong or maybe even not strong enough.

What do you guys think? Is one "right"?

RZ Rob
Got enough shinny gooey stuff on that bike?
Do you run a used bike lot or something?
Don't you just slide right off that seat?

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Old 02-23-2013, 10:31 PM   #54687
marlinjames
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exhaust

Quote:
Originally Posted by RZRob View Post
Hi Folks,

So, I've got a couple XR650Ls and both have FMF exhausts. One has the PowerCore 4 with PowerBomb and the other has the Q2.

So, I'm noticing two mounting choices:
So most, including mine (this isn't my bike) have the hanger mounted here


But others (including my Q2) are mounted further forward.
I think aesthetically I like the further forward, but I don't think that would be as strong or maybe even not strong enough.

What do you guys think? Is one "right"?

RZ Rob
It looks a lot better but i agree i dont think it would be as strong. Lots of leverage and weight hanging out there.
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Old 02-23-2013, 10:33 PM   #54688
Spud Rider
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Location: Idaho
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Quote:
Originally Posted by ONandOFF View Post
The sprocket I "worked onto" my not-noticeably-worn countershaft is a JT F1307 - not sure how that compares to the PBI/Moose But I didn't grind anything. I did, however, tap gently with a hammer going around the edge on a large sprocket inverted over the shaft. If banged hard enough, it could damage the housing on the opposite side.
I only needed to tap gently with a hammer to install my PBI, XR650R C/S sprocket the first time. All subsequent removals and installations were accomplished easily by hand.

Spud
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Old 02-23-2013, 10:34 PM   #54689
mendoteach
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RZ Rob, go with the Far back mounting.
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Old 02-23-2013, 10:37 PM   #54690
Mossy-Back
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Location: Corvallis, OR
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Quote:
Originally Posted by marlinjames View Post
I just got doing the dave's mod and it all went smooth. bike started right up barely had to tap the starter. i let it wram up for a awhile and took it for a ride. it runs fine at about a quarter throttle but if i open it up it jokes out and spudders but still kinda accelerates. Guessing i have the air fuel mixture off? i backed it out the 2 1/2 turns.
Im at sealevel in washington state with stock exhaust. oh and i used a 55 and a 155 jets, it was suggested to use a 158 but had already ordered the 155 and couldnt find one local so i figured i would try it. its in my shopping cart for my next order
Try adjusting the mixture screw the "Spud Way":

1) Get the bike up to operating temp
2) While idling, slowly turn screw in until the idle gets rough
3) Slowly turn screw back out until idle gets smooth again

If after this it is adjusted way too far in, or too far out, you may need smaller/bigger jets. I tried the 55/158 jetting on mine (live at 350ft and ride up to 4k or so) and it was WAY rich. I have 52/155 jetting in now and it seems to be better. Adjust the screw how I told you, put a new plug in, put some miles on it, and then do a plug check to see where you're at.
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Quote:
Originally Posted by kenny61 View Post
figures...my stud was rusty I played with my nuts a little and it cranked right over

Mossy-Back screwed with this post 02-23-2013 at 10:50 PM
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