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Colton Kruse

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About Colton Kruse

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  1. Colton Kruse

    89 yz250.....90-94 connecting rod. Big mistake.

    I figured it was the cylinder. Also I really don't want to get another crank refinished and do a full tear down. Current crank is perfectly done other than the stroke is too short. I am really counting on wiseco to find a piston that will work for now. Another thing if I buy a 90 and up cylinder is hopefully the power valve is at the same height? the actuator arm for it has zero room to move down on my current 89 cylinder, it damn near touches the cases were it comes up out of the clutch cover.
  2. Well guys I messed up. When I first got the bike to rebuild I was told it was a 91yz250. Turns out it is actually a 89yz250 which I found out part way through my build. No biggie right? Well I forgot when I got my crank redone I used a 91 yz250 connecting rod.........These rods are 5mm shorter than the stock 89 yz250. So now my engine is fully rebuilt with zero chance of ever running since the pistion falls a full 5mm short of the top of the cylinder at TDC. My questions is where do the 90-94 yz250s lose their 5mm to use this shorter rod? I know the piston doesn't make it up with a 5mm higher deck...I currently have wiseco on a wild search to find any and all pistons that could potentially work on my now half torn apart Frankenstein engine. Does the 90-94 make up for the shorter stroke in the cylinder or in the cases? I know the clutch cover changes to the two piece style in either 90-91 but was doubtful that would have anything to do with the shorter stroke. See the build progress below since it isn't all doom and gloom and has been a fun project.
  3. Colton Kruse

    Plastic swap for a 91 yz250?

    Update picture. If it posted right. Found some decent plastics for 100 bucks. Going with a red black and white look.
  4. Colton Kruse

    Plastic swap for a 91 yz250?

    Thanks. Yeah I have all that on my list right now. I am going to wait a while though. Going to get everything else ready. The complete engine rebuilt ate most of my rebuild money. I will probably do this in the future though. I love the way the 96 looks when it is put together, plus you can actually get some different plastics!
  5. Colton Kruse

    Plastic swap for a 91 yz250?

    Yeah some are painted, some are bent and other are super yellowed from being so old. So going to be heating/reshaping, sanding and maybe repainting them if i have to. We will see what happens for now. Guess I expected the plastics to be a 100 dollar replacement but that isn't the case for these super old bikes. Oh well.
  6. Colton Kruse

    Plastic swap for a 91 yz250?

    I guess another question. If I did a 96 update. I would need a tank. Plastics. Subframe and seat ? With the subframe change would I need a air box as well ?
  7. Colton Kruse

    Plastic swap for a 91 yz250?

    Thanks I might have to look into that. I am pretty deep price wise currently so I will wait and fix up these old panels. I have rebuilt the whole thing from the ground up so another 300 just for plastics just doesn’t feel good to me. Mechanically I will be good to go so I think I will piece the rest together over time.
  8. Colton Kruse

    Plastic swap for a 91 yz250?

    United States
  9. Colton Kruse

    Plastic swap for a 91 yz250?

    I actually have both the pink and the red. Not sure what I will do. Seems the full kits all are in Europe for some reason so it still ends up being around 300 bucks. Wish the 96 kit would fit. So much cheaper. For now I will have to attempt to refinish the beat to death plastics it came with.
  10. Colton Kruse

    Plastic swap for a 91 yz250?

    Thank you very much ! I didn’t have the ufo kit number and yeah I guess white it is ! Maybe I will paint a few of the pieces blue....we will see. Or maybe just stickers. Thanks again
  11. Colton Kruse

    Plastic swap for a 91 yz250?

    Hey guys I am new to the forum but tried to search for this subject and didn't find much for a bike this old. I bought the bike recently and have pretty much everything rebuilt but I am having trouble sourcing the proper plastics. First question is will 96 plastics fit this bike? There is plenty of those kits all over the internet. Currently the only thing I can find online that is actually for a 91 time range is white plastics only and can only be bought piece by piece. When they are pieced together like that is it almost 350 bucks for all white plastics which isn't what I want. So if you know of a thread that can show me how to put 96 or newer plastics on or if they bolt up on their own please let me know. Or if you have better ideas for what to do for plastics let me know! Thanks.
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