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1978 XS400-2E Intro and Build

Discussion in 'The Garage' started by bcware, Feb 25, 2011.

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  1. xschris

    xschris XS400 Guru Top Contributor

    Was the seat for an xs400 or is it one of them universal deals.
     
  2. Scorpio1963

    Scorpio1963 XS400 Guru Top Contributor

    can cut the bolt off then drill a hole in its place.basicaly inverting t/ /onhe bolt where it goes down from the top and uses a not on the bottom to hold the tank?
     
  3. bcware

    bcware Well-read Top Contributor

    The seat is kind of universal. The hotwingglass sit claims it fits an xs400 and it nearly does, but the front few inches of the pan is too narrow for the frame. I've seen more than one person make it work, but they had the later model with the rounded gas tank and that tank mounts differently; there is no bolt like on my '78.
     
  4. willem

    willem XS400 Guru Top Contributor

    Hmm yea that doesn't sound like the best idea then. Perhaps the solution lies in a combination of making the tank mounting bolt sunken or smaller (by grinding down the bolt and/or removing the washer) just so it's low enough that your seat padding can still fit over it. Then cut a semicircle out of your seat pan and make it all fit :)
     
  5. bcware

    bcware Well-read Top Contributor

    I'm in a bit of a hurry; still more exams this week. Here's an update with a crappy quick picture.

    Inaugural ride 2014!

    First impressions:

    Progressive fork springs 11-1109 with 15w oil feels great.

    The seat feels good; very comfortable cushion.

    I'm running an NGK R5672A-10 plug on the right cylinder now; it started first kick after winter storage with old gas. Win!

    Switched to 10w40 oil for giggles; seems to work well in this cold.

    More to come later. A few bugs left to work out, but nothing major.
     

    Attached Files:

  6. xschris

    xschris XS400 Guru Top Contributor

  7. willem

    willem XS400 Guru Top Contributor

    How did you end up mounting the seat?
     
  8. bcware

    bcware Well-read Top Contributor

    Good question. I will have to take some pictures of all that!
     
  9. Wess0339

    Wess0339 XS400 New Member

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    ontario
    Hey I've got a bike pretty well the exact same and im looking around for engine rebuild kits. Anyone know where I can pick one up for the xs400j for cheap? Having a hard time coming across one

    Posted via Mobile
     
  10. bcware

    bcware Well-read Top Contributor

    Here is a recent photo of the bike; a few minor things done to it, but there is more to come in the near future!
     

    Attached Files:

  11. xschris

    xschris XS400 Guru Top Contributor

    It is nice to see you back at it again:)
     
  12. kshansen

    kshansen XS400 Addict

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    figured I butt in a bit on this thread as I have what could be the twin to the one shown in the first post.

    The question(s) for today are is there a preferred source for carb kits these days? Also will they come with float valve and seat and the "butterfly seals"?

    OK found these online, anyone try them? Price sounds almost too good compared to others I have seen:

    http://www.ebay.com/itm/1977-YAMAHA-XS400-CARB-REPAIR-KITS-2-REPAIR-KITS-INCLUDED-CI-XS400DCR/131547738668?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D32222%26meid%3D2e1dcba2d9e14578be07dcaf0c3315f7%26pid%3D100005%26rk%3D2%26rkt%3D6%26sd%3D131547739724&rt=nc
     
    Last edited: Jul 7, 2015
  13. bcware

    bcware Well-read Top Contributor

    Butterfly seals? no, no kits come with those. I found it very difficult to find a "complete" carb kit with all of the innards, but eventually located a Keyster brand one after a lot of searching. The float valve and seat are usually included in the common "basic" kits. I don't know if there is a preferred brand. I am sure Keyster is not the best; Mikuni is the best, but it is what I used and it worked.
     
  14. bcware

    bcware Well-read Top Contributor

    New paint. I used tan truck bed liner. It's a bit ghetto, but at least the bike matches now and there is some color. I think it is an improvement. It cost me just under $20 for two cans.
     

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  15. Sesty

    Sesty H.E. Pennypacker

    looks amazing all one color!

    how effective is that trimmed up front fender?
     
  16. bcware

    bcware Well-read Top Contributor

    Meh, the fender isn't going to stop a whole lot, but I'm sure it does something. Its main purpose right now is to act as a cable-stay for the speedo and front brake cable :laugh: Thanks for the kind words.
     
  17. XSstudent

    XSstudent XS400 Enthusiast

    Looks great! I bet it is a blast to ride. :thumbsup:

    Posted via Mobile
     

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