Posts
2018
Joined
8/25/2013
Location
USA
Edited Date/Time
8/21/2014 2:42pm
Is it part of the "good" years of newer CR250's? It looks like I am going to pick it up on Saturday, any specific things to that bike I need to look for or can see visually wrong? Bike from pictures is VERY clean, and visually well taken care of.....
The Shop
Luxon 4-Post Bar Mounts
$189.95 - $239.95
DeCal Works Huge Plastic Inventory of UFO and Polisport kits.
Free shipping: VITALMX
Talk to CamP - http://www.vitalmx.com/forums/Race-Shop,42/Our-new-2004-CR250,1263331
I didn't have an '01, but I did have a YZ250. The motor is stronger, but when geared the same, the difference isn't as much. But the CR is better just about everywhere else. The suspension might be just a tad more prone to bottoming, but that can be fixed.
As someone said, the motor is a rocket, I actually run a little but fatter jetting to a) get some extra oil circulating in the cylinder area, most notably the exhaust bridge (more on that in a sec) and b) to smooth out the power a tad. It's an extremely rideable bike that you can be aggressive on and attack with, making you feel like a pro.
So, some specific notes:
1. Putting an '05+ cylinder base gasket on is a really inexpensive mod to tighten your squish band and add a hair of low-end response.
2. Check the RC valve cables, and also start the bike with the cover off and check for full range of motion. Apparently there's a Chinese motor that can be bought for pretty cheap if your servo goes out.
3. You'll get the most peak HP with the stock Mikuni, but most just run the Air Stryker. Just easier to get dialed in.
4. The piston drilling - MX965 is right, this can be done, but it HAS to be done to a forged piston only. OEM (which CamP will tell you is the best) are cast pistons and cannot be drilled. I run a regular cast OEM with 32:1 full-synthetic at a safe jetting and I have no more problems with the exhaust bridge. This CR motor has a somewhat poorly designed exhaust bridge that is prone to heating and cracking, which is a spendy fix. If you do go the route of drilling a forged piston, make sure you check Thumpertalk for the pictures on exactly where to drill.
5. Other than routine maintenance, I think that's it. Check your clutch components when you get it, there's good ways to check and make sure your crank seals are keeping air/oil out of the cylinder, which will throw off the jetting.
I would bet good money that once you get it set up and working well it'll be one of your favorite 250s you've ever got to ride. I love mine, it's comfy and fun as hell.
They have NO low end stock :> so we did a couple of things to make it easier to ride. These mods give it a bit of low end and a broader power band all the way through.
V force reed
FMF Fatty pipe
6oz flywheel weight.
Oversize front brake
have fun with it.
Here is my 03. Gonna change the back grounds though too much going on. Gonna go with just more of plain look white with black numbers only. Liek the front plate. TJ didnt give me much of a preview when i oredered them.
Pit Row
I love my 04. It's the first big bike 2 stroke I ever bought and rode. But I just returned from a riding trip in Alabama and I rode my buddies yz250 while I was there and it felt like a 500 compare to my bike. I just put a new piston and rings in it the weekend before but my buddies dad was messing with the power valve so I think that's where I'm losing a lot of power. I don't know much about motors so I hope I can get it tweeked before this weekend
Maybe someone else can chime in.
I've had a chance to ride some CR's ranging from 86 models to 07s.
They are pretty fun bikes!
If you get it and desire more out of the bike talk to Short and he can tell you what to do. His 05 is a beast and a blast to ride (granted, you can't run pump fuel through that motor)
The superseal on the DT1 air filters works well to get past the stock nubs on the sealing surface. http://www.dt1filters.com/
I've been told that the Boyesen exhaust flange works well, but didn't try one on my 03 CR250. http://www.boyesen.com/exhaust-flange-3.html
I did run a PC pipe and silencer, 05+ base gasket and 2000 CR250 Keihin carb on my 03. Ran great. Compared to my friend's 05 YZ250, it had a little less bottom end, similar midrange, and more top end power. Not as snappy of a motor as his, but in a corner to to corner drag race, I'd beat him most of the time.
It's so difficult to find one without fender holes and black plastic with skin graphics.
Plan on talking to short for sure.
Post a reply to: Tell me all you can about the 2004 CR250R....