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Are these motors a mono block or not? Is there any common problem that anyone knows of with these sleds?
 

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I have a '99 XCR800 and its been a great sled for me since I bought it last year. If your motor is stock - you shouldnt have any problems with them. Anybody? WL.
 

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no its not mono block.
 

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Yeah the only common problem with these sleds is the power valves seam to heat up and break, which causes pieces to get into the engine and she blows. Polaris UPDATED but didn't recall the part. So if you buy one you should replace the original power valves with the updated ones. The updated ones just have small holes in the so they can expand when they heat up.

Other than that, those sleds are sweet!! The hall major A*s. They are reliable also other than listed above.
 
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