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Featured XS400 Bobber build/first post

Discussion in 'The Garage' started by volcomskater77, Oct 20, 2010.

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Page 6 of 19
  1. Feb 14, 2011 #101
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
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    38
    tinley park, Illinois
    yeah im prob just going to lap the valves and clean out everything else i can in my small engines shop at school. its a deeply mild rebuild. if you know what i maen. im not gonne go crazy on it, just enough to get it running smooth. keeping everything thats good and replacing everything that isnt. lol HT you should do i polishing tutorial...
     
    volcomskater77, Feb 14, 2011
    volcomskater77, Feb 14, 2011
    #101
  2. Feb 15, 2011 #102
    hardtailed77

    hardtailed77 Never Finished

    980
    1
    16
    Jeffersonville, IN
    I would, but you guys don't wanna see my Skippi way of doing it. That, and I look like Death when I'm finished....COVERED in black crap! haha I may try to write-up a little something though!
     
    hardtailed77, Feb 15, 2011
    hardtailed77, Feb 15, 2011
    #102
  3. Feb 15, 2011 #103
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
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    38
    tinley park, Illinois
    its a way to do it right? and is works. that what it comes down to. lol
     
    volcomskater77, Feb 15, 2011
    volcomskater77, Feb 15, 2011
    #103
  4. Feb 15, 2011 #104
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
    4
    38
    tinley park, Illinois
    anybody know where to get good sized piston rings? or a car size that fits the same? i found NOS ones online but i have nothing to compare price on. there like 20 bucks is that good?
     
    volcomskater77, Feb 15, 2011
    volcomskater77, Feb 15, 2011
    #104
  5. Feb 16, 2011 #105
    Travis

    Travis Staff Member Staff Member

    904
    41
    28
    Roberts, WI, USA
    Yeah $20 is a good price for a set for one piston. So they are the stock size? Is that what you need?
     
    Travis, Feb 16, 2011
    Travis, Feb 16, 2011
    #105
  6. Feb 16, 2011 #106
    drewpy

    drewpy Excess twin Top Contributor

    6,708
    68
    98
    Manchester, UK
    price sounds ok to me
     
    drewpy, Feb 16, 2011
    drewpy, Feb 16, 2011
    #106
  7. Feb 16, 2011 #107
    hardtailed77

    hardtailed77 Never Finished

    980
    1
    16
    Jeffersonville, IN
    Any luck on locating rings bro?
     
    hardtailed77, Feb 16, 2011
    hardtailed77, Feb 16, 2011
    #107
  8. Feb 16, 2011 #108
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
    4
    38
    tinley park, Illinois
    yeah ill share the link when i get home. and its for both pistons. it says NOS. so thats a plus i dont know if i wanna share the link tho because its so awesome. lol
    there .25mm. is that the right size? it says 1st oversize piston rings to fit the xs400.
     
    Last edited: Feb 16, 2011
    volcomskater77, Feb 16, 2011
    volcomskater77, Feb 16, 2011
    #108
  9. Feb 17, 2011 #109
    hardtailed77

    hardtailed77 Never Finished

    980
    1
    16
    Jeffersonville, IN
    I'm guessing that if it says 1st oversize, that they are for an overbore application. I may be wrong though..
     
    hardtailed77, Feb 17, 2011
    hardtailed77, Feb 17, 2011
    #109
  10. Feb 17, 2011 #110
    drewpy

    drewpy Excess twin Top Contributor

    6,708
    68
    98
    Manchester, UK
    yep, .25 is first overbore, they are not standard bore.
     
    drewpy, Feb 17, 2011
    drewpy, Feb 17, 2011
    #110
  11. Feb 17, 2011 #111
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
    4
    38
    tinley park, Illinois
    well i can always bore it out. we have the equiptment at school. thats a cylinder hone tho. how hard would it be to bore out and what else would i have to do to it? just new rings right?
     
    volcomskater77, Feb 17, 2011
    volcomskater77, Feb 17, 2011
    #111
  12. Feb 17, 2011 #112
    drewpy

    drewpy Excess twin Top Contributor

    6,708
    68
    98
    Manchester, UK
    no, new .25 pistons as well :D
     
    drewpy, Feb 17, 2011
    drewpy, Feb 17, 2011
    #112
  13. Feb 17, 2011 #113
    logan

    logan XS400 Enthusiast

    70
    3
    8
    British Columbia
    preatty sure if you rebore the cylinders, your gonna need oversized pistons. set the rings inside the cylinders and check the end gap on the rings. you would want to hone the cylinders if your putting in new rings, but honing is not boreing!

    drewpy beat me to it!
     
    Last edited: Feb 17, 2011
    logan, Feb 17, 2011
    logan, Feb 17, 2011
    #113
  14. Feb 17, 2011 #114
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
    4
    38
    tinley park, Illinois
    damn ok. thanks guys. there goes that idea. on the search again. haha where did you guys get your rings from?
    and a new update: i bet my boss $100 that i would have it running in time for our little get together. so now i really gotta get my @$$ in gear. haha
     
    volcomskater77, Feb 17, 2011
    volcomskater77, Feb 17, 2011
    #114
  15. Feb 18, 2011 #115
    Travis

    Travis Staff Member Staff Member

    904
    41
    28
    Roberts, WI, USA
    Volcom, you have to measure the wear on your cylinders with a fancy bore gauge and then determine if you can get by with standard size rings after honing the cylinders. If you can't, then you have to buy oversize pistons and rings and have the cylinders bored and honed to match.

    I'm no engine expert, but that's my understanding. I would just take it to a machine shop that does that type of work and they'll tell you what you need. Then you gotta go try to find the parts.
     
    Travis, Feb 18, 2011
    Travis, Feb 18, 2011
    #115
  16. Feb 18, 2011 #116
    hardtailed77

    hardtailed77 Never Finished

    980
    1
    16
    Jeffersonville, IN
    hardtailed77, Feb 18, 2011
    hardtailed77, Feb 18, 2011
    #116
  17. Feb 18, 2011 #117
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
    4
    38
    tinley park, Illinois
    thanks for the info guys. ill be checking it out and using a bore gauge at school come tues or wed. no school monday!
     
    volcomskater77, Feb 18, 2011
    volcomskater77, Feb 18, 2011
    #117
  18. Feb 19, 2011 #118
    Chickenone

    Chickenone XS400 Enthusiast

    61
    0
    6
    Carlsbad Ca
    any updates?? i need new rings too... stock size....
     
    Chickenone, Feb 19, 2011
    Chickenone, Feb 19, 2011
    #118
  19. Feb 19, 2011 #119
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
    4
    38
    tinley park, Illinois
    not really. ill be taking in the jugs and the head into skool on wed to clean out and check for wear. should be some updates on wed-friday. depends on when i finish.
    where are you getting your rings?
     
    volcomskater77, Feb 19, 2011
    volcomskater77, Feb 19, 2011
    #119
  20. Feb 20, 2011 #120
    volcomskater77

    volcomskater77 XS400 Chopophile Top Contributor

    1,198
    4
    38
    tinley park, Illinois
    not an update, but i learned how to run a lathe today. its pretty fun and i will be posting pics of my progress and how ill be using my knowledge for use on my bike. probably a kicker pedal and some homemade Z-bars. (i gotta knurl them somehow)
     
    volcomskater77, Feb 20, 2011
    volcomskater77, Feb 20, 2011
    #120
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