!984 250 XC engine question

[Steve Ransom]

I recently purchased a "supposedly" 1984 250 XC. When the engine builder pulled the cylinder he said t was a CR.. Since the 1984 CR was water cooled I think the cylinder must be a 1983 version,
but now I'm wondering about the entire motor. The number is stamped 0893 5124. I'm hoping someone can help me figure it out.
Thx

 

[troy deck]

we need pixs 84 CRs are LC motors CRs and XCs are ez 2 tell apart if u on what 2 look 4

 

[Steve Ransom]

It is an air cooled motor. I've already spoke with Phillip at Husqvarna-Parts.com about the engine #. It doesn't appear on his list, but a similar one shows as 1984 250WR....Like I stated, if the engine builder is correct it must have an 1983 CR cylinder .......or be a 1983 engine.

 

[2premo]

http://www.huskyclub.com/model.htm

this might be handy for the case numbers if nothing else

 

[Steve Ransom]

Thanks 2premo but that appears to be the same as Phillips list.

 

[2premo]

yeah yours seems closer to a WR number, might be a compilation of a couple bikes

 

[1982 XC 430]

I have a 84 250 WR project Bike. Keep in mind that the LC Cylinder has a center Exhaust Port and the AC is a 45deg side Port. So the Frames are different depending on which Cylinder exhaust port it design it came with, to allow the Exhaust to clear. The WR's have shorter suspension, and a quick look at the distance between the front Axel and the bottom of the Fork Leg will determine that. The 83 and 84's have different porting in the Cylinder, and that can determine which Year it is. The 84 WR 250 is kind of a unique bike today, cause it falls threw the cracks of modern Vintage MX Rules. Its Air Cooled, Twin Shock, and its an 84. The 84's porting allowed it to compete HP wise with the Japanese bikes of the era.

 

[Kartwheel68]

The '84 250XC was air cooled. The only LC bikes in '84 were the 125s, the 250CR and the 400WR, all others were still air cooled. As mentioned, since the LC and air cooled cylinders have different exhaust port arraignments and require different frames, not just a simple top end swap, its highly unlikely your bike was changed from LC to air cooled. At Unadilla in 2012 I rode an '82 250WR with an '84 air cooled cylinder and I didnt think it was any faster than an '82 or '83 cylinder, and it lost some low/mid range power.

 

[Joe Chod]

83 added the tranfer boost ports and made 83 and up AC 250 more of a mid top .......... for woods and even vintage GNCC type tracks I and many prefer the 82 cylinder

 

[suprize]

I rode an 84 a/c wr 250 and it had a weird power curve. it was like they had tried to detune a CR so it ended up with a surge off the bottom that just withered out and then right up the top it had a "mini band" if you could call it that . mid 84 the l/c's came out and were twin shock till mid 85 when the first of the single WRX's arrived... numbers are funny..... there were no a/c 400's only 430's and 500's in 84 / 85

cheers ( I think im close here )

 

[PEZBerq]

84 240 / 250 WR has great power but you need to gear it down using a 56 tooth rear sprocket to stop it falling off the power between gears (Cycle World test recommendation). It's a great woods bike. I love mine - light and great handling.