The BST-40 Bible

Discussion in 'Thumpers' started by laramie LC4, May 31, 2008.

  1. motolab

    motolab Long timer

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    Technically, it's not a nut, as a nut has internal threads. Anyhow, original cold start enrichment plunger retainers are listed at http://www.advrider.com/forums/showthread.php?t=528038.

    Regards,

    Derek
  2. wvrocks

    wvrocks Been here awhile

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    Thanks. KTM parts fiche calls it a screw. Procycle calls it a fitting. The "Bible" calls it a nut. Whatever. I call the original plastic one a piece of shit that has rendered my bike useless for 3 more days.
  3. motolab

    motolab Long timer

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    Suzuki calls it a "Holder, Guide". I'd say that between KTM, Procycle, and Suzuki, KTM's term is the most accurate.

    Regards,

    Derek
  4. laramie LC4

    laramie LC4 crash test dummy!

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    i personally think "piece of shit plastic nut" is the most appropriate, but what do i know... :D

    once again we find our self quibbling over a name instead of focusing on the point. that being, this would be a very nice replacement for anyone with this carb. a far cry better than the "shitty plastic nut" that you sell.

    just had another look at your "vendor" thread. how long did it take for you to copy all that? as i have said in the past, if that was my "livelihood" i would have done a little more work. maybe instead of correcting every ones grammar you could spend some time and add pics?

    i spent several weeks building the bible, taking pics, editing, writing, then publishing. why? because i wanted to help people, not make money. so when people say i'm getting "a bit crotchety" it's only because when you look at "your work" vs. "my work" there really is no comparison. and once again, this ISN'T MY JOB! but then again, i suppose just putting a link in your vendor thread to my work is probably easier. :wink:

    derek, i don't question your knowledge, i don't question your abilities, i just question your motivations. this isn't about making money, its supposed to be about helping.

    enough said,

    laramie :beer
  5. sir phily

    sir phily Been here awhile

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    I think you just said what every one else was thinking:lobby

    Cheers Phil
  6. wvrocks

    wvrocks Been here awhile

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    Have to agree with Laramie on this one. I posted the part up simply because I hadn't seen it in this thread before and thought it might save someone else some hassle in the future.

    I appreciate the services that Motolab provides. Derek spent a fair amount of time on the phone with me while I checked out the wear on carb parts and made what I feel are good recommendations on what to replace.

    That being said, the semantic quibbling is a little ridiculous. I'm not stupid but carb parts aren't my main business, lets talk civil engineering and I'm more in my element. I appreciate technically correct nomenclature as much as anyone. However, telling me that I don't know what I'm talking about in one sentence and then offering to sell me something in the next doesn't really make me want to get out my wallet.

    I could have purchased pretty much all the parts from a KTM dealer online for the nearly the same price but I decided to support a member of our community. I think Derek knows his stuff. His approach to sharing that knowledge in this forum is just a little rough sometimes.
  7. motolab

    motolab Long timer

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    I mentioned the terminology that various manufacturers use so that if these terms come up for someone working on, or trying to buy parts for, a BST40 carb, they will be able to understand what is being referred to.
    I never told you that you don't know what you're talking about, nor did I mean to infer it.
    Would the items have been in stock at the KTM dealer? Would there have been someone available who knows BST40 carbs to talk to you on the phone to help you obtain no more and no less than what you actually need?
    It is in my nature to be direct and to the point. I'm sorry you were offended by it.

    Regards,

    Derek
  8. wvrocks

    wvrocks Been here awhile

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    Derek, I'm not offended in the least. My point is, some potential customer may read what is posted here, multiple times, and decide they really don't want to spend their money with you. No skin off my back. I don't pay my bills selling these parts. Not fair to you as written word doesn't convey tone and you were truely helpful on the phone. As I said, I appreciate the time you took, time that most likely wouldn't have be taken by any other online dealer.
  9. motolab

    motolab Long timer

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    Thank you for the thoughtful and kind response.

    Regards,

    Derek
  10. SBG

    SBG Neville1 to TT boys

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    Honestly, when I read float weight I was thinking of the actual floats because they seemingly apply weight on the gas to maintain the height. I never thought of the needle till I read float needle.
    And believe me, I can read fuel air screw and know I'm going to be corrected for calling it the wrong thing.
  11. wrk2surf

    wrk2surf on the gas or brakes

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    I dont know if it has been done but maybe we could do a list of reccomended wear parts that seem to be the most used like a minimum list and then maybe a list of a complete rebuild.. :deal
  12. bmwktmbill

    bmwktmbill Traveler

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    Derek,
    Are you a German or European?

    I have many German and Dutch friends as a result of my travels.
    They are very direct and precise unlike Americans.

    Germans are wonderful travel companions and have a strong belief in transparency and fairness.
    Europeans learn ethics in what we call junior high school.

    Euros are taught to be socially responsible.

    Given where America finds itself in today's world I welcome a direct approch to all problems.

    I have had enough misdirection and I try not to take anything personally especially here on ADVRIDER where each of us is...a fucking asshole.

    bill
  13. SBG

    SBG Neville1 to TT boys

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    Okay, dyno jetted, airbox fully open, exhaust. I dropped the main down from recommended because full throttle was choking it out when trying to go in a hurry. Now, here's the issue. My air/fuel screw (I know I'll be corrected) is basically closed. If it goes half a turn it starts hesitating, which I believe should occur 2 full turns in our more. So, what needs to be done, pilot jet up or down? Currently stock on a 1990.
  14. wvrocks

    wvrocks Been here awhile

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    I recieved my "insert part name here" from Procycle. Fits perfectly and works as it should.

    [​IMG]
  15. bmwktmbill

    bmwktmbill Traveler

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    Another KTM 640 'weakness' repair.
    And thanks to wvrocks!!

    If we could find an inlet cam follower(that lasts) the frikkin machine would be perfect.
    Just like all of us(inmates).

    bill
  16. laramie LC4

    laramie LC4 crash test dummy!

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    if your "fuel" screw is fully closed then you need a smaller idle, or your bleeding fuel from somewhere else that is richening the circuit.

    i hade an issue once with my xr400, rebuilt the carb and engine at the same time and when i was putting things back together i must have slightly bent the needle. for the life of me i couldnt get the bike to idle correctly, its was really rich but i was using a much smaller than recommended idle. finally i figured out the issue, put in a new needle, went back to the recommended idle jet size and she fired right up. the bent needle was allowing fuel to bleed into the system at idle richening everything to the point of not wanting to run.

    good luck,

    laramie :beer
  17. laramie LC4

    laramie LC4 crash test dummy!

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    if someone wants to put together a list i will go back in and add it to the original post. while i'm at it i will "fix" my grammatical errors. :deal

    laters,

    laramie :beer
  18. laramie LC4

    laramie LC4 crash test dummy!

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    i'm starting to think that some think that's my new middle name.... :lol3

    laramie :beer
  19. laramie LC4

    laramie LC4 crash test dummy!

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    POST UPDATED

    - fixed nomenclature of "mislabeled" parts in text

    - fixed pics with incorrect nomenclature

    - added wvrocks "plastic shitty nut" replacement for the choke cable to the post


    if someone wants to build a "consumable" parts list with part numbers (ktm oem numbers when possible) i will add that as well.

    laters,

    laramie :beer
  20. meat popsicle

    meat popsicle Ignostic

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    Thanks for sharing your find - did the Procycle part come with the rubber boot?

    My two cents, as I do lots of this: searching for things requires terms; since each manufacturer decided to call it something different it is useful to have a discussion about it. The only problem I noticed is interpretation of post tone and emotional baggage; ADV is truly international (more so that America) so you can't assume you understand an inmate's intent, and we all need to remember to let things go and worry about what actually matters to you in your life. :norton

    Speaking of which, I wonder if replacing the plastic thingey with a metal one is a good idea. Remember a engineer likely specified a plastic part for a reason; why would they? Maybe Mikuni found that being able to break is better for the circuit's integrity - remember the torque values on your fork triple tree bolts, low to allow them to slip before your forks bend in a crash - maybe Mikuni found plastic to be more resilient in this application.

    Call Mikuni and ask them:

    Mikuni American Corporation
    (847) 781-2000