First lt250r confusion..

• First lt250r confusion..
  Posted by Kevhes11 on 14 Apr, 2013 16:21
• I got this quad cheap years ago with the plan of making her run again. I'm finally getting to it and I'm confused. I bought it thinking it was an 86. Now that I'm looking, I see the vin says the frame is 87. The motor is blue like an 87. The motor doesn't have a pv though which is why I'm lost. Is it possible it's an 86 motor, painted blue then put to an 87 frame ? I thought that job requires modification to the frame ? Any help would be great. Thank you all.
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• #1 Reply
  Posted by RustBelt on 14 Apr, 2013 17:03
• The 85 86 dont have a pv. The front motor mount on the 85 86 mounts to a single down tube. the 87 and newer have a forked down tube and a motor mount from the head to the backbone.
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• #2 Reply
  Posted by Gillio on 14 Apr, 2013 17:05
• That's an 87 power valve motor. PV is behind the rectangle plate with the window in it. The frame, I didn't look. But the 10th digit from the left will tell you the year on the VIN. The letter should be H if its an 87. Probably is.
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• #3 Reply
  Posted by Kevhes11 on 14 Apr, 2013 17:12
• That's my answer. I didn't know that. Thank you lol
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• #4 Reply
  Posted by RustBelt on 14 Apr, 2013 17:22
• It's an 87 to 90 frame.
  
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• #5 Reply
  Posted by Kevhes11 on 14 Apr, 2013 17:54
• Well this motor sucks. Who wants to sell me one ?
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• #6 Reply
  Posted by GrkGuy on 14 Apr, 2013 18:21
• send iceracer a pm, he will make it fly, with-out wings.
  87 is a better motor, large intake..
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• #7 Reply
  Posted by BadMoonRacing500 on 14 Apr, 2013 18:57
• What's wrong with it ?? The 87 cylinder is very desirable, and most everything in the motor can be fixed or replaced.
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• #8 Reply
  Posted by Kevhes11 on 14 Apr, 2013 19:00
• The cranks got a big amount of play. The power valve is all messed up. The cylinder base has dents from someone removing it with a screw driver. The dome needs resurfaced and there was some sort of christalized gasket in the crank/ bottom end lol. In parts ill be around 4-500 I'm thinking
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• #9 Reply
  Posted by BadMoonRacing500 on 14 Apr, 2013 19:03
• A good motor ready to run will cost you way more than that if it's built properly.
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• #10 Reply
  Posted by Kevhes11 on 14 Apr, 2013 19:07
• That's true. I emailed that guy ill see what he says for me
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• #11 Reply
  Posted by JayTater on 15 Apr, 2013 04:06
• Go RM250!!!
  
  
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• #12 Reply
  Posted by Iceracer on 15 Apr, 2013 08:01
• Post up some pictures of the cylinder and surfaces. It may be fixable, but also may not be worth the time. Could be better off with a different engine to work with.
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• #13 Reply
  Posted by Kevhes11 on 16 Apr, 2013 23:53
• I don't have specific pictures at the moment. Here's what I do have. The motor possibly could be re usable but ill see if it's worth the cost. From what I've seen , the bottom end looks just nasty, it's gotta have junk in there. There's the gasket all over the place. The whole motor leaked all over. The piston has an interested shape taken out of it and I could tell it didn't look like it was high hours on it. The cylinder has what appears to be flat head screw driver chunks missing lol. Check her out see what you all think I know a little but not a lot.
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• #14 Reply
  Posted by RustBelt on 17 Apr, 2013 00:21
• A little weld, new seals and bearings, the bottom end should be good for years.
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• #15 Reply
  Posted by Kevhes11 on 17 Apr, 2013 00:57
• What do you think of that piston ? What blew this guy up
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• #16 Reply
  Posted by Iceracer on 17 Apr, 2013 05:07
• Im not seeing a blow up yet, Mechanical failure is more likely.   If it was me knowing they hammered screw drivers in to remove the cylinder I would be looking for a set of cases. Not a lot of point into putting money into fixing somthing just to wait for the next issue to surface. Start with a clean neglected set rather than a obviously abused part. again this is just from these couple pictures.
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