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  1. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    And an update: Starter is now kicking like new, didn't even realize how lazy it was before. RESULT with the carbs though...sort of. It's now...
    Post by: Miixxa, Jul 22, 2026 at 1:52 PM in forum: XJ Technical Chat
  2. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Aaand my Yamaha just keeps on giving...issues I mean, with comic relief. Managed to get some time and test the current carb setup...only for the...
    Post by: Miixxa, Jul 21, 2026 at 12:04 PM in forum: XJ Technical Chat
  3. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Yup, luckily I have the original XJ900 manual which has been a great help but it being a 900 manual it has no actual help regarding the carbs......
    Post by: Miixxa, Jul 21, 2026 at 10:11 AM in forum: XJ Technical Chat
  4. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Of course, the one time I share a picture and I manage to mix up the bowls, which I have very dilligently put on the right carbs for the past ~30...
    Post by: Miixxa, Jul 18, 2026 at 2:20 PM in forum: XJ Technical Chat
  5. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Well, I decided to save myself the headache of theorizing this through and continue with my trial-and-error empiric way of getting these effing...
    Post by: Miixxa, Jul 18, 2026 at 9:58 AM in forum: XJ Technical Chat
  6. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    This thread has now took a little detour, but since I haven't had the motivation (or time) to do anything practical on the bike here goes: Some...
    Post by: Miixxa, Jul 16, 2026 at 12:24 PM in forum: XJ Technical Chat
  7. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Great insight on the soul of the carbs again! Valuable info on all parts and I got excited for a while because I felt my brain edging on the verge...
    Post by: Miixxa, Jul 16, 2026 at 10:07 AM in forum: XJ Technical Chat
  8. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Yeaaah, fluid dynamics is fun... Not saying I'm any good at it, but I have some experience from the modeling world as I've built and tinkered with...
    Post by: Miixxa, Jul 15, 2026 in forum: XJ Technical Chat
  9. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Well, being the stubborn tinkering millenial I am, I have heavily outsourced all data mining to AI and I believe one of it's sources was exactly...
    Post by: Miixxa, Jul 14, 2026 in forum: XJ Technical Chat
  10. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    I think you're correct on everything and I really have no answers to why Hitachi did this to the 33's. All I know is that the extra "breathers"...
    Post by: Miixxa, Jul 14, 2026 in forum: XJ Technical Chat
  11. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Yup, and all the jetting etc. matches on info about 33's + the missing jets at the throat makes me believe they're 100% 33's That said, despite...
    Post by: Miixxa, Jul 13, 2026 in forum: XJ Technical Chat
  12. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Truly appreciate the cents chacal. a) Don't know how to further verify these being 33's other than measuring the throats. I have went with the...
    Post by: Miixxa, Jul 13, 2026 in forum: XJ Technical Chat
  13. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Okay, after another few hours I verified all the carbs wet levels being at 1mm on the center of the bowl while on the bike, this should be correct...
    Post by: Miixxa, Jul 13, 2026 in forum: XJ Technical Chat
  14. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Again monologuing here, but after a small beer fueled thinking-over I still might have few things to check: 1. Cause of the conflicting data...
    Post by: Miixxa, Jul 12, 2026 in forum: XJ Technical Chat
  15. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Status update: Got the carbs back on, got it running and... it's freaking running so lean that it just continuously pops from the exhaust. Now...
    Post by: Miixxa, Jul 12, 2026 in forum: XJ Technical Chat
  16. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Well smoke generator is a must have tool in the automotive world, so borrowed one from work. Really need to get my own in the carage... YICS...
    Post by: Miixxa, Jul 11, 2026 in forum: XJ Technical Chat
  17. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    While gathering motivation and rejetting the carbs, I decided to check the intake boots again - just to be sure. The boots I had never taken off...
    Post by: Miixxa, Jul 11, 2026 in forum: XJ Technical Chat
  18. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Well I was having a hard time since Hitachi jets are apparently non-existent nowadays... Literally just happened to test some Dellorto 5mm jets,...
    Post by: Miixxa, Jul 7, 2026 in forum: XJ Technical Chat
  19. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Thanks @chacal, that confirms that everything inside the carbs should be correct. Clearly the previous dude bought some kinda kit for the carbs...
    Post by: Miixxa, Jul 5, 2026 in forum: XJ Technical Chat
  20. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    I've done this for half a dozen times already, mainly because there's contradicting info on what the levels on this spec bike should be. Tried the...
    Post by: Miixxa, Jul 2, 2026 in forum: XJ Technical Chat
  21. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Update: Got all of the carbs "refurbished" so to say. For some reason the 4# carb enrichment plunger was leaking really bad when I originally...
    Post by: Miixxa, Jul 2, 2026 in forum: XJ Technical Chat
  22. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    This is now turning into a project thread, but I need to vent... So 2 out of 4 carbs now done. Took my time with each one, completely dismantling...
    Post by: Miixxa, Jun 30, 2026 in forum: XJ Technical Chat
  23. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Update on the current plan: So I know I could have get the correct seals from chacal, but living where I do those seals won't get to me for this...
    Post by: Miixxa, Jun 29, 2026 in forum: XJ Technical Chat
  24. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Hey chacal, I truly appreciate the reply! Yeah, this thing quickly turned from an easy project to an headache caused mainly by the carbs. The...
    Post by: Miixxa, Jun 28, 2026 in forum: XJ Technical Chat
  25. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Thx for the input but it was mostly unnecessary if you had read the previous posts... Sure the original airbox would be nice, but not worth...
    Post by: Miixxa, Jun 10, 2026 in forum: XJ Technical Chat
  26. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Aaand took the carbs to church with all steps this time and found out an issue with the enrichment circuit, which is basically leaking. Lapped the...
    Post by: Miixxa, Jun 6, 2026 in forum: XJ Technical Chat
  27. Miixxa
    Post

    What did you do to your Yamaha today?

    Yup, I've blocked those vents against the recommendations online because it's clearly ripping air from there. Since thise have been blocked it's...
    Post by: Miixxa, Jun 6, 2026 in forum: XJ Technical Chat
  28. Miixxa
    Post

    What did you do to your Yamaha today?

    What I did today (and every day for the last week) was try to diagnose the extremely rich running XJ750S 11M Eurospec These Hitachi HSC33's with...
    Post by: Miixxa, Jun 6, 2026 in forum: XJ Technical Chat
  29. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Update: Went down to 108# mains and tried the unifilters with and without the self made "laminar flow" tubes between the filters and carbs. Tried...
    Post by: Miixxa, Jun 5, 2026 in forum: XJ Technical Chat
  30. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Forgot to mention that the unifilter mounts I'm manufacturing will remove any harsh angles in front of the carb intakes and will provide a total...
    Post by: Miixxa, Jun 3, 2026 in forum: XJ Technical Chat
  31. Miixxa
    Post

    NOT a typical Hitachi carb issue...?

    Yup, compression is good and valve clearances within spec (although I did check these before running the engine after it had sat for a few years)....
    Post by: Miixxa, Jun 3, 2026 in forum: XJ Technical Chat
  32. Miixxa
    Thread

    NOT a typical Hitachi carb issue...?

    Okay, been lurking the forum for the whole spring while building my XJ750S into a caferacer (I know, I didn't start the project, but I'm finishing...
    Thread by: Miixxa, Jun 2, 2026, 51 replies, in forum: XJ Technical Chat
Showing results 1 to 32 of 32
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