Tell me all you can about the 2004 CR250R....

MXisLIFE
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MXisLIFE 5/21/2014 9:51am
5/21/2014 9:51am
Anyone ever use the ibooster spark amplifier and if so how did it work out for ya
slipdog
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slipdog 5/21/2014 11:53am
5/21/2014 11:53am
Socket946 wrote:
Sigh. Signed up just to flame people in my thread.
Not for nothing, but he gave some pretty solid insider info on jetting a TMX carburetor. You flamed him first.
Travis_Hudson 5/21/2014 10:41pm
5/21/2014 10:41pm
Jimmy Buffett wrote:
1. you are wrong, click the link above. 2. call up HRC and let them know they are mickey mouse, and that you know better than...
1. you are wrong, click the link above.

2. call up HRC and let them know they are mickey mouse, and that you know better than they do.

3. shut up and hold my pocket



Do you even carburetor, bro?
slipdog wrote:
Killin' me Smalls...

You need to run a Margarita for your avatar!
Bahahaha!
Rmartin508
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Rmartin508 5/21/2014 10:55pm
5/21/2014 10:55pm Edited Date/Time 5/21/2014 10:58pm
Jimmy Buffett wrote:
This will blow some minds, due to all the misinformation floating around on the net. the TMX is actually a better carb than the PWK. But...
This will blow some minds, due to all the misinformation floating around on the net.

the TMX is actually a better carb than the PWK. But how can it be??! Say it ain't so!! That's not what Thumpertalk told me!!

Honda put a pig rich nozzle in that thing from the factory. S-9 to be exact.

Here is what you do. Go to Sudco and buy an S-8. install it. . Then, the two vent orifices that point upward on the carb (brass nipple ones), run those up and backward into your airbox. Drill a half inch hole and push them through. either put a breather can on the end of them, or a small piece of foam over the ends of the hoses. The negative pressure in the airbox when you whack the throttle eliminates bog down low.

I can't take credit for that set-up, it's straight from HRC. I have found that in most cases, probably 90%, that people who swear by the PWK just can't jet a bike. In 2002, Honda tried the PWK in testing, but went with the TMX because it actually made a full 2hp more than the PWK on their dyno.
Is this true for the TMX 36mm stock on a cr 125? I have a PWK on my 250 but, am gonna give your jetting a try. I am changing my 125 to a PJ carb with 52 pilot 165 main 1469m needle. Its a high compression motor race gas only 9.2 cc head running an 89 dome crown piston inside an HPP cylinder. curious as to wht I can do with the 36 TMX. Thanks for the info. I have to agree the PWK is a super easy mod and makes a better power curve than a stock TMX even a TMX with JD jet kit on a cr 250. By all means if the TMX 38 with your set up is better I am damn sure willing to giv eit a try.

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CamP
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CamP 5/22/2014 5:56am
5/22/2014 5:56am
Jimmy Buffett wrote:
This will blow some minds, due to all the misinformation floating around on the net. the TMX is actually a better carb than the PWK. But...
This will blow some minds, due to all the misinformation floating around on the net.

the TMX is actually a better carb than the PWK. But how can it be??! Say it ain't so!! That's not what Thumpertalk told me!!

Honda put a pig rich nozzle in that thing from the factory. S-9 to be exact.

Here is what you do. Go to Sudco and buy an S-8. install it. . Then, the two vent orifices that point upward on the carb (brass nipple ones), run those up and backward into your airbox. Drill a half inch hole and push them through. either put a breather can on the end of them, or a small piece of foam over the ends of the hoses. The negative pressure in the airbox when you whack the throttle eliminates bog down low.

I can't take credit for that set-up, it's straight from HRC. I have found that in most cases, probably 90%, that people who swear by the PWK just can't jet a bike. In 2002, Honda tried the PWK in testing, but went with the TMX because it actually made a full 2hp more than the PWK on their dyno.
Leaning out the nozzle on the TMX isn't a secret. Lots of folks have tried it on their CR250's, with mixed results. The reality of mx is that high peak HP numbers don't always result in the best power delivery. We don't race on dynos, we race on mx tracks.
JW381
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JW381 5/22/2014 12:30pm
5/22/2014 12:30pm
I have had the hardest time dialing in my pilot circuit in my PWK ever since I got it from JD. When I first started it up, I had to constantly blip the throttle to keep it running. Gonna try the CEJ needle in it as per CamP, but if that doesn't get me some low-end consistency, I might go back to the TMX. Since I had the '04 with the TPS, it actually ran really solid at times, I was just fiddling with it in the middle of rebuilding my top end. Don't know if I'll have good results or not, but I'm not having this "jet it and forget it" experience with my PWK. It's likely 100% due to my own inability, but still.
FGR01
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FGR01 5/22/2014 12:54pm
5/22/2014 12:54pm
Socket946 wrote:
Sigh. Signed up just to flame people in my thread.
slipdog wrote:
Not for nothing, but he gave some pretty solid insider info on jetting a TMX carburetor. You flamed him first.
He actually kinda confused everyone with his contradicting info. First he said the mod only applied to the 01-03 TMX, then he posted a link trying to show that it applies to all CR250 TMX up to 07.

So, which is it? Can the nozzle be swapped out on the 2004 and up CR250 TMX carbs?
Travis_Hudson 5/22/2014 1:36pm
5/22/2014 1:36pm
MXisLIFE wrote:
Anyone ever use the ibooster spark amplifier and if so how did it work out for ya
I have one, not sure how much difference it makes......but my bike is very crispy.Smile
Socket946
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Socket946 5/22/2014 2:13pm
5/22/2014 2:13pm
FGR01 wrote:
He actually kinda confused everyone with his contradicting info. First he said the mod only applied to the 01-03 TMX, then he posted a link trying...
He actually kinda confused everyone with his contradicting info. First he said the mod only applied to the 01-03 TMX, then he posted a link trying to show that it applies to all CR250 TMX up to 07.

So, which is it? Can the nozzle be swapped out on the 2004 and up CR250 TMX carbs?
I've noticed with most posters here, within their first 5-10 posts, they're usually just riddles to confuse the masses.
MXisLIFE
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MXisLIFE 5/22/2014 2:36pm
5/22/2014 2:36pm
Thanks I wasn't looking for more power just wanted to know if it produced a cleaner burn my bike is running rich at 32:1 and is loading up pretty bad so I'm gonna go 40:1 and just wanted to know if this would help..
FGR01
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FGR01 5/22/2014 2:48pm
5/22/2014 2:48pm
Big Lenny wrote:
Make sure you hit that baby everytime you wash it, and if any mud is on there it'll start to rust by the next day...If you...
Make sure you hit that baby everytime you wash it, and if any mud is on there it'll start to rust by the next day...If you want that bitch looking good Maxima SC-1 is the way to go...This shit is the best IMO..restores everything plastic, cables, rubber...

Best part about living in AZ, bare pipes don't rust. Don't put any coating or protectant on it. WD-40 and scotchbrite to get it clean and then ride it to turn it blue. I only hit it with the WD about once a year and that's just to remove stains. I actually wipe all the wd off after cleaning it and don't leave any on. It never rusts.

About 1 year old...



and 2-years old...

FGR01
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FGR01 5/22/2014 3:04pm
5/22/2014 3:04pm
MXisLIFE wrote:
Thanks I wasn't looking for more power just wanted to know if it produced a cleaner burn my bike is running rich at 32:1 and is...
Thanks I wasn't looking for more power just wanted to know if it produced a cleaner burn my bike is running rich at 32:1 and is loading up pretty bad so I'm gonna go 40:1 and just wanted to know if this would help..
What bike?

32:1 is not the prob. Don't put less oil in. Jetting is the prob. With proper jetting a bike will not load up at 32:1.
MXisLIFE
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MXisLIFE 5/22/2014 3:12pm
5/22/2014 3:12pm
FGR01 wrote:
What bike? 32:1 is not the prob. Don't put less oil in. Jetting is the prob. With proper jetting a bike will not load up at...
What bike?

32:1 is not the prob. Don't put less oil in. Jetting is the prob. With proper jetting a bike will not load up at 32:1.
04' CR 250 it ran fine all summer and winter and just started acting up this spring
Big Lenny
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Big Lenny 5/22/2014 3:12pm
5/22/2014 3:12pm
No, no the SC1 only goes on the plastics/rubber/vinyl...when you wash the PC bare pipe you'd better be sure there's no water left on it or it'll start rusting by the next morning, my pipe get's a scotchbrite scrubbing and a coat of WD40 with each wash...
FGR01
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FGR01 5/22/2014 3:22pm
5/22/2014 3:22pm
FGR01 wrote:
What bike? 32:1 is not the prob. Don't put less oil in. Jetting is the prob. With proper jetting a bike will not load up at...
What bike?

32:1 is not the prob. Don't put less oil in. Jetting is the prob. With proper jetting a bike will not load up at 32:1.
MXisLIFE wrote:
04' CR 250 it ran fine all summer and winter and just started acting up this spring
OK, so something has changed or gone wrong. Leaky crank seal or intake manifold or air leak somewhere else? Don't adjust your oil ratio or jetting to compensate for a problem. Find the problem.
FGR01
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FGR01 5/22/2014 3:22pm
5/22/2014 3:22pm
Big Lenny wrote:
No, no the SC1 only goes on the plastics/rubber/vinyl...when you wash the PC bare pipe you'd better be sure there's no water left on it or...
No, no the SC1 only goes on the plastics/rubber/vinyl...when you wash the PC bare pipe you'd better be sure there's no water left on it or it'll start rusting by the next morning, my pipe get's a scotchbrite scrubbing and a coat of WD40 with each wash...
No rust on bare pipes in AZ. I leave the water on mine all the time. No problem.
Big Lenny
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Big Lenny 5/22/2014 3:53pm
5/22/2014 3:53pm
Big Lenny wrote:
No, no the SC1 only goes on the plastics/rubber/vinyl...when you wash the PC bare pipe you'd better be sure there's no water left on it or...
No, no the SC1 only goes on the plastics/rubber/vinyl...when you wash the PC bare pipe you'd better be sure there's no water left on it or it'll start rusting by the next morning, my pipe get's a scotchbrite scrubbing and a coat of WD40 with each wash...
FGR01 wrote:
No rust on bare pipes in AZ. I leave the water on mine all the time. No problem.
Damn...Huh

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Cygnus
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Cygnus 5/22/2014 4:29pm
5/22/2014 4:29pm
Big Lenny wrote:
No, no the SC1 only goes on the plastics/rubber/vinyl...when you wash the PC bare pipe you'd better be sure there's no water left on it or...
No, no the SC1 only goes on the plastics/rubber/vinyl...when you wash the PC bare pipe you'd better be sure there's no water left on it or it'll start rusting by the next morning, my pipe get's a scotchbrite scrubbing and a coat of WD40 with each wash...
FGR01 wrote:
No rust on bare pipes in AZ. I leave the water on mine all the time. No problem.
Same here. No humidity.
Travis_Hudson 5/22/2014 4:51pm
5/22/2014 4:51pm
MXisLIFE wrote:
Thanks I wasn't looking for more power just wanted to know if it produced a cleaner burn my bike is running rich at 32:1 and is...
Thanks I wasn't looking for more power just wanted to know if it produced a cleaner burn my bike is running rich at 32:1 and is loading up pretty bad so I'm gonna go 40:1 and just wanted to know if this would help..
If you go to 40:1 you will be getting richer....fuel wise. But to answer your question, yes, i think it helps alittle bit.
Socket946
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Socket946 5/22/2014 10:38pm
5/22/2014 10:38pm Edited Date/Time 5/22/2014 10:39pm
Went 1 step richer (from 48 to 50) on the pilot - around the shop it sounds great - no loading up or anything.

Excited to try it on the track next Wednesday.

Edit - On Wednesday night I went to a 185 main and gained more top end.

I, as FGR, am worried about a possible air leak. I am going to check the crank seals, and I triple checked the Vforce 3 air boot, and it looked good.
809
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809 6/2/2014 10:36am
6/2/2014 10:36am
Bringing this back.......I have a 03 250 I traded for. I love the bike just trying to straighten it out. It still has the TMX carb and it came with a JD kit. The bike had the blue needle on 3rd clip when I got it, and sputters rich at part throttle. Went Red needle 3rd clip and almost seemed lean. Red on 4th is too rich again. Who has experience with the JD kit? The instructions say Red 3 is richer than Blue 2. Any Ideas?
Rmartin508
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Rmartin508 6/2/2014 10:43am
6/2/2014 10:43am
It's not just the needle. Call jd jetting they will get you lined out. It's almost inpossie to jet a bike over the internet. Fuels oils air all that makes a different.
JW381
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JW381 6/2/2014 1:19pm
6/2/2014 1:19pm
809 wrote:
Bringing this back.......I have a 03 250 I traded for. I love the bike just trying to straighten it out. It still has the TMX carb...
Bringing this back.......I have a 03 250 I traded for. I love the bike just trying to straighten it out. It still has the TMX carb and it came with a JD kit. The bike had the blue needle on 3rd clip when I got it, and sputters rich at part throttle. Went Red needle 3rd clip and almost seemed lean. Red on 4th is too rich again. Who has experience with the JD kit? The instructions say Red 3 is richer than Blue 2. Any Ideas?
You should go from red 3 to blue 2. I bet that would actually work well for you. Like Rmartin said though, you need to sort out your other circuits.
gsxr6
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gsxr6 6/2/2014 5:23pm
6/2/2014 5:23pm
Socket how goes it with your bike?
gsxr6
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gsxr6 6/2/2014 5:28pm
6/2/2014 5:28pm
And for the tmx crowd ....I have 3 tmx and only one was cool with the jd kit. It actually resides on a buddys husky 360 92 now. Really woke that bike up. Alas twas never even close anywhere in the power to my amazingly perfect 2000 pwk. I am actually getting ready to try the new pwm carb as it us said to mix so much better in the top i should be using a 170 or so main. I shall report in 3 or 4 weeks when i get mine back together......
Socket946
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Socket946 6/2/2014 5:45pm
6/2/2014 5:45pm
gsxr6 wrote:
Socket how goes it with your bike?
Hey, thanks for asking.

I've ridden tiddlers my whole life, so this is the most powerful bike I've owned. I've ridden lots of 450's and 250 2 strokes, but this was the first to call my own.

That said, I am loving it. Every minute on the bike has been positive and good. The bike is good, the jetting is beautiful, but I am still playing with it to see what the bike does.

Right now, I'm at 1.75 turns out, 185 main, 50 pilot, CEJ needle on 3rd clip. 32:1 Maxima super M with 110 leaded race gas.

The bike rips. It has mid range and top end that doesn't stop pulling. I think my gearing is odd with the 51 rear. I am thinking I want to make a large move to see what happens, like buy a 49 and a 47 - Just to see what it does.

Right now the bike sits with the suspension off - '07 CRF front forks and shock will go to my local suspension guy for clean up, and a new rear spring. My front brake is good, but it's not "DAAAAMNNNNN good" like my CRF and FGR's YZ are.

I ordered a mityvac to fix that up.

Thanks for asking! Smile
Big Lenny
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Big Lenny 6/2/2014 6:00pm
6/2/2014 6:00pm
gsxr6 wrote:
Socket how goes it with your bike?
Socket946 wrote:
Hey, thanks for asking. I've ridden tiddlers my whole life, so this is the most powerful bike I've owned. I've ridden lots of 450's and 250...
Hey, thanks for asking.

I've ridden tiddlers my whole life, so this is the most powerful bike I've owned. I've ridden lots of 450's and 250 2 strokes, but this was the first to call my own.

That said, I am loving it. Every minute on the bike has been positive and good. The bike is good, the jetting is beautiful, but I am still playing with it to see what the bike does.

Right now, I'm at 1.75 turns out, 185 main, 50 pilot, CEJ needle on 3rd clip. 32:1 Maxima super M with 110 leaded race gas.

The bike rips. It has mid range and top end that doesn't stop pulling. I think my gearing is odd with the 51 rear. I am thinking I want to make a large move to see what happens, like buy a 49 and a 47 - Just to see what it does.

Right now the bike sits with the suspension off - '07 CRF front forks and shock will go to my local suspension guy for clean up, and a new rear spring. My front brake is good, but it's not "DAAAAMNNNNN good" like my CRF and FGR's YZ are.

I ordered a mityvac to fix that up.

Thanks for asking! Smile
Great news, don't know how big you are but dropping down might lose some low end, but of course you'll gain on top..another thing they suggested was to change the shifter and use the one off the 125, I did it but then changer to a Hammerhead...Wink
Socket946
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Socket946 6/2/2014 6:01pm
6/2/2014 6:01pm
Big Lenny wrote:
Great news, don't know how big you are but dropping down might lose some low end, but of course you'll gain on top..another thing they suggested...
Great news, don't know how big you are but dropping down might lose some low end, but of course you'll gain on top..another thing they suggested was to change the shifter and use the one off the 125, I did it but then changer to a Hammerhead...Wink
Why the 125 shifter? What does it change?

My issue is the bike is SOOOO snappy in the mid range, and my throttle control SUCKS, I sometimes have a hard time working with it.

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