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Old 02-26-2019, 03:22 PM
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Default '92-01 CR250R Cases

     

Did the '92-'01 CR250R cases have changes in the mounting locations for the different frames they went into? A part number search for cases turned up that '01 and '00 shared case halves, but I thought the engine went mostly unchanged for its production run aside from port timing. I suppose an alternate way to state the same question would be: Do all '92-'01 motors interchange into those years of frames?
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Old 02-27-2019, 05:37 AM
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Probably. See Doggers threads. On my 94 build, I used a new 96 cylinder and head with a new 2000 case and a new 2001 case if I remember correctly. Everything fit perfectly. Remember the heads and pistons are different between 92-96 and 97 to 2001.
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Old 02-27-2019, 02:01 PM
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I'll read back through the threads to see what info is available there. I'm aware of the different specs on the top end and thought that was all that had changed and that they could all interchange.
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Old 03-26-2019, 08:55 AM
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I'm going to have to make a tough call and I could use some input...
I finally took some time to disassemble the bike ('01 CR250R). I chipped the cause for concern (a small glob of JB Weld right below the crank cavity) off and found a hairline crack extending onto both case halves. Everything else was quite normal... except for the chunk of webbing missing from the almost new Wiseco crank. The cylinder has a slight bit of scoring by the exhaust bridge, but definitely seems salvageable. For what I'm into the bike, I can part it out and make a decent profit OR I can try to have the cases welded to get those cracks reinforced. I suppose I could also reassemble as is and re-JB Weld the area to prevent an air leak. If it was a personal bike, I'd replace the cases, but for what bikes sell for in my area (this is a bike for flipping), I would make MAYBE $200-400 for all my trouble. Just the ignition system off these is selling for around what I'm into the bike, but I always prefer to hear them running and sell them that way. Thoughts??
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Old 03-26-2019, 09:24 AM
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My two cents... not a lot of guys pining for an 01 CR250. Most guys want the 02-07 it seems. You might have some luck selling the roller as a 500 swap candidate, then parting out the motor (or fix and sell complete). In this case you probably won't gain much in profit by repairing the bike and trying to sell it as it is.
Granted my input is based on what I see selling and not selling in my area, and my experience with doing exactly what you are doing right now. Market is probably a bit stronger in your area so maybe you'll have better success.
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Old 03-26-2019, 09:25 AM
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Quote:
Originally Posted by cowboyona426 View Post
My two cents... not a lot of guys pining for an 01 CR250. Most guys want the 02-07 it seems. You might have some luck selling the roller as a 500 swap candidate, then parting out the motor (or fix and sell complete). In this case you probably won't gain much in profit by repairing the bike and trying to sell it as it is.
Granted my input is based on what I see selling and not selling in my area, and my experience with doing exactly what you are doing right now. Market is probably a bit stronger in your area so maybe you'll have better success.
I appreciate the input!
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Old 03-28-2019, 08:34 AM
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So interesting confirmation
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Old 03-29-2019, 03:14 PM
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So, I took a bit of a drive to a welder a friend had recommended that has fixed cracked cases for him in the past. He said he would give it a shot but was a bit worried about the sealing surface between the case halves. I also reached out to the PO because he had a few parts from a variety of bikes up for sale. I though he might have the oem pipe (the SST pipe on it is quite rusty). I drove there as well and found the pipe was not for a '00-'01 frame. HOWEVER, he offered a '95 for peanuts. So, I took that instead and will shortly confirm if the '95 cases will fit in the '01 frame and build the motor using those cases if that is the case (...pardon the pun).

---------- Post added at 04:14 PM ---------- Previous post was at 04:09 PM ----------

BTW: If anyone is interested in a '95 frame for free, just holler and it's yours. It has sat for a few years, but looks salvegeable. I also have two cylinders (one needs re-nikasiling, the other was sleeved at some point), a swingarm, and a few other odds and ends that I'll be putting up on eBay.
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Old 04-02-2019, 05:05 PM
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Update: '95 cases fit perfectly into a '01 frame. Additionally, the right case cover from the '01 (which has the upgraded water pump gear from plastic to steel) bolts right up to the '95 motor.
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Old 04-03-2019, 07:59 AM
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The wrench rabbit kits show a different part number for '95-'96 than '97-'01. I pulled some parts individually and the gasket kit numbers are identical, the crank kit numbers are identical, but the piston kit numbers are different. Since I'll be running the '01 cylinder, should I run the '01 kit so the piston is for that cylinder?
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