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  1. H

    Introduction and YZ250 swap

    Happy Thanksgiving all
  2. H

    Introduction and YZ250 swap

    At the time of this post the quad is functionally finished! I went over to Abla (They're local to me) and got a +3 +1 A-Arm kit for it. That widening kit was beating me up bad. Since the last post I added along with the front end a head stay mount to hopefully help spread some of the...
  3. H

    Any current members have a Yz490 swapped blaster

    Hey I have a decent thread going too!
  4. H

    Introduction and YZ250 swap

    Bit of an update for you all.. Quad is running like a boss. On a recent trip I actually broke the front radiator off, decided that wasn't a good fit on the quad and grabbed a set of original radiators and grills. Shoehorned them under the front fenders, somehow. Haven't had any issues with that...
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    Yz 250 engine swap

    That is absolutely not true, like, at all. At least if you decide to run an FMF. I've got a gnarly on mine, and with some creative maneuvering you're able to rotate the pipe into the stock chassis. Pardon the messy garage.
  6. H

    Introduction and YZ250 swap

    I'm not much of a structural engineer but I'm not sure where else sees much stress? The rear is already stout for the swingarm, the bottom mount is a full width C channel bar with vertical tabs, and the front mounts have 2"x1/8th" plate gussets down to the lower frame rail.
  7. H

    Introduction and YZ250 swap

    Hey all, desert season is here and I've got the quad finished up (well, 99% of it anyways). Took some lessons from last year riding it and made some changes. I reworked the radiator mount, brought it higher up and closer in, and ditched the heavy steel guard I made. It'll be getting a light...
  8. H

    Introduction and YZ250 swap

    Honestly, it's not bad at all. I feel like people make a huge deal about it, and go to some pretty incredible lengths try and avoid it. The machine is so large it physically absorbs much of the vibration.
  9. H

    Introduction and YZ250 swap

    The bike was unharmed. I managed to get it back to camp after recovering my brain marbles for a few minutes. Thankfully the full breadth of the pain didn't set in until AFTER I got back to camp. I kickstarted it on my bad ankle...
  10. H

    Introduction and YZ250 swap

    Hey all, it's a couple days post desert trip. Got there late, did a night run, quad ran good. Needs more gearing to handle the increased load from the sand, but it sheared the bolt again. No repairing that this time so I'm going to put a crank in it. No big deal, I knew it needed one, was just...
  11. H

    Introduction and YZ250 swap

    Recovery! New top end was installed, along with a new clutch side crank seal. No play in either crank bearing was able to be detected. The repair to the crank with the new threads has been a complete success as well. I ended up tossing that ebay carb into a box and buying a new used 98 YZ250...
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    Introduction and YZ250 swap

    Disaster! Was doing tuning work and somehow managed to shear my woodruff key off and managed to strip out the threads on the crankshaft. However, i was able to turn down the diameter of the thread shaft and cut new threads at a 3/8-16 thread pitch (no metric tap and die set on hand). So that...
  13. H

    Introduction and YZ250 swap

    Got my kickstarter today and it fit without any modifications what-so-ever. Sweet. Also got a new Protaper handlebar pad just because. So the ebay engine runs but the ebay carb is jetted way...way wrong. 55 pilot, 175 main, clip is, well, not sure. Nothing in it is labeled. If you're familier...
  14. H

    Introduction and YZ250 swap

    Update for tonight. Added expanded metal to the back of the grill to prevent debris from being redirected into the radiator, and cleaned off the spatter. Looks great now. I also got the coil mounted, coolant lines run and chain installed. Home stretch!
  15. H

    Introduction and YZ250 swap

    Hello, and thanks! Its been good fun reading about all the other builds here.
  16. H

    Introduction and YZ250 swap

    And this is where I'm at with the project. All I have left to do is finish routing the coolant lines, put a wider rear axle in to match the new widened front, and weld a few gussets in. I'll be detailing those activities as they progress, hopefully within the next week or so this thing will be...
  17. H

    Introduction and YZ250 swap

    Continued from prior... The Cooling System I considered a bunch of mounting options for a radiator for a while before settling on a design idea I liked. I love the look of a banshee with it's high and proud radiator, and I decided to pay homage to that with a very custom mounting and...
  18. H

    Introduction and YZ250 swap

    Continued from prior... The Exhaust Pipe The single biggest obstacle to this entire swap. I've watched all the youtube videos. I've seen people cut every weld and rotate, I've seen them do weird notch cuts for bending and oh my god they all look terrible. I thought there HAD to be a way to get...
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    Introduction and YZ250 swap

    Continued from OP Current Situation At this point in time I've sorted out many of the issues most people have with these swaps. Engine The first issue is finding an engine. I scoured ebay and craigslist. There was either complete junk or expensive clean completes for $1500. Luckily one day a...
  20. H

    Introduction and YZ250 swap

    Hello! I'm HannsGruber. Since I'm doing this swap I thought I'd post what pictures I have here and answer any questions I've discovered to some potential frequent problems as I've come across and solved them. I didn't intend to log the build, so the pictures I have are more milestone-y that...