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  1. faffi
    Thread

    XV750/1100 mongrel

    Hi! I presume this very nice place on the World Wide Web have become enriched with many new members since my last post. No need to tire you with...
    Thread by: faffi, May 16, 2023, 0 replies, in forum: Other Motorcycles
  2. faffi
    Post

    Sharing my experience re LOW COMPRESSION on '81 XJ650 4k1 SECA

    Things can remain stuck in a running engine - how many hydraulic valve lifters have not been freed up by ATF over the years?! - so personally I...
    Post by: faffi, Sep 2, 2022 in forum: XJ Technical Chat
  3. faffi
    Post

    Re-re-reviving my '81 Seca 750

    HiFlo are known for good quality products.
    Post by: faffi, Sep 1, 2022 in forum: XJ Technical Chat
  4. faffi
    Post

    XJ750 SECA Custom

    A ton of work!
    Post by: faffi, Aug 31, 2022 in forum: XJ Modifications
  5. faffi
    Post

    1985 HD Sportster 1000....I know...why...lol

    Will be interesting to follow!
    Post by: faffi, Aug 31, 2022 in forum: Other Motorcycles
  6. faffi
    Post

    81 XJR 750 R engine swap? or fix?

    Someone will chime in as to whether your shifting can potentially be fixed easily without engine strip. If you need to strip the engine, probably...
    Post by: faffi, Aug 27, 2022 in forum: XJ Technical Chat
  7. faffi
    Post

    Noise rear axle when deceleration Yamaha xj 750 maxim 82

    I bought cheap Chinese intake rubbers for my XVS650. Have no idea how they will hold up over time, but they still looked like new after a year,...
    Post by: faffi, Aug 23, 2022 in forum: XJ Technical Chat
  8. faffi
    Post

    Noise rear axle when deceleration Yamaha xj 750 maxim 82

    Otherwise the cylinder will suck false air through the port, causing poor running.
    Post by: faffi, Aug 21, 2022 in forum: XJ Technical Chat
  9. faffi
    Post

    xs850 questions (2)

    Yes, a full battery should allow at least half an hour of riding with no charging taking place.
    Post by: faffi, Aug 20, 2022 in forum: Other Motorcycles
  10. faffi
    Post

    XJ750 SECA Custom

    Swingarm looks like Virago 750/920, possibly XZ550.
    Post by: faffi, Aug 15, 2022 in forum: XJ Modifications
  11. faffi
    Thread

    What are your prime XJ likes & dislikes?

    I suppose the majority of members only have one model, but if you have several, please specify what qualities you are particularly happy with and...
    Thread by: faffi, Aug 14, 2022, 13 replies, in forum: Hangout Lounge
  12. faffi
    Post

    Re-re-reviving my '81 Seca 750

    Spark plugs easily last 10k miles today, usually twice that, so I would at least keep the "old" ones for when the new ones are worn out.
    Post by: faffi, Aug 14, 2022 in forum: XJ Technical Chat
  13. faffi
    Post

    Noise rear axle when deceleration Yamaha xj 750 maxim 82

    Good suggestion! If a spacer is missing, things can bind or touch that should not.
    Post by: faffi, Aug 13, 2022 in forum: XJ Technical Chat
  14. faffi
    Post

    '81 XJ650 Maxim won't start

    Going to "swear in the church" here, go out on a limb and say that in my experience, as long as an engine idles fine and revs raise and drop as...
    Post by: faffi, Aug 12, 2022 in forum: XJ Technical Chat
  15. faffi
    Post

    Electrical problem

    Could be as simple as poor ground.
    Post by: faffi, Aug 12, 2022 in forum: XJ Technical Chat
  16. faffi
    Post

    Mysterious numbers

    I believe at least some of the numbers have to to with bearing sizes related to the crank, and the pair may be to make sure that pared crank cases...
    Post by: faffi, Aug 12, 2022 in forum: XJ Technical Chat
  17. faffi
    Post

    Noise rear axle when deceleration Yamaha xj 750 maxim 82

    I agree it sounds like metal vibrating, but if it is the exhaust, then the sound should expectedly be the same whether in gear or not. But what...
    Post by: faffi, Aug 12, 2022 in forum: XJ Technical Chat
  18. faffi
    Post

    XJ750 SECA Custom

    Impressive and extensive project. Would be very nice with a writeup!
    Post by: faffi, Aug 11, 2022 in forum: XJ Modifications
  19. faffi
    Post

    Noise rear axle when deceleration Yamaha xj 750 maxim 82

    It can also be a stiff U-joint. It would vibrate and increase rotating force if it makes the drive shaft wobble around.
    Post by: faffi, Aug 11, 2022 in forum: XJ Technical Chat
  20. faffi
    Post

    Carbs adjusting

    Good question!
    Post by: faffi, Aug 11, 2022 in forum: XJ Technical Chat
  21. faffi
    Post

    Carbs adjusting

    Personally, I would have shimmed the needles first, no other change. Two changes at the time can make it difficult to know what worked and not,...
    Post by: faffi, Aug 11, 2022 in forum: XJ Technical Chat
  22. faffi
    Post

    Carbs adjusting

    You should be able to find a decent compromise, but also the pipe you have can be poorly designed regarding helping the engine make even power...
    Post by: faffi, Aug 11, 2022 in forum: XJ Technical Chat
  23. faffi
    Post

    XJ550 Slide Differences

    Could it be that the Maxim got different slides for 1982, and that the one with the extra holes is from a Seca or a 1981 Maxim?
    Post by: faffi, Aug 9, 2022 in forum: XJ Technical Chat
  24. faffi
    Post

    XJ550 Slide Differences

    Are the extra holes threaded? This is for the 550 Seca [IMG]
    Post by: faffi, Aug 9, 2022 in forum: XJ Technical Chat
  25. faffi
    Post

    Re-re-reviving my '81 Seca 750

    Pretty sure stock is 5mm, although I do not know for a fact. The FSM should have the specifications.
    Post by: faffi, Aug 9, 2022 in forum: XJ Technical Chat
  26. faffi
    Post

    50k - Any recommended services at this mileage?

    I change the final drive oil every 6-10k, splines - at least the front ones - are not lubed by final drive oil and need the appropriate grease.
    Post by: faffi, Aug 7, 2022 in forum: XJ Technical Chat
  27. faffi
    Post

    Never ridden, still boxed XJ

    Good buy, very reasonable price. I hope the buyer will ride the wheels off it, instead of preservering it as is.
    Post by: faffi, Aug 7, 2022 in forum: Hangout Lounge
  28. faffi
    Post

    Higher rpm

    That does not sound right, you need at least 13v to get a charge worth having going.
    Post by: faffi, Aug 7, 2022 in forum: XJ DIY How-To Instructions
  29. faffi
    Post

    50k - Any recommended services at this mileage?

    I would remove the final drive shaft and lube the splines, and due to the age it would make sense to completely strip and overhaul the brake...
    Post by: faffi, Aug 6, 2022 in forum: XJ Technical Chat
  30. faffi
    Post

    softer clutch pulls

    Interesting idea. That was a massive extension, that should almost reduce the required effort in half. It also means a lot more travel is required...
    Post by: faffi, Aug 6, 2022 in forum: XJ Modifications
  31. faffi
    Post

    Brake Pads (which to choose?)

    OEM are almost always the best compromise when it comes to brake pads. The sintered content make sure you have good stopping power also in the...
    Post by: faffi, Aug 5, 2022 in forum: XJ Technical Chat
  32. faffi
    Post

    Spark plugs not working again

    You can get a spark in free air when testing with a spark plug, but if the spark is weak, it usually will not be able to jump across the spark...
    Post by: faffi, Aug 5, 2022 in forum: XJ Technical Chat
  33. faffi
    Post

    Spark plugs not working again

    Have you verified that you do not have spark? If not, the most reliable way to check for spark is with a strobe timing light, as it will only...
    Post by: faffi, Aug 5, 2022 in forum: XJ Technical Chat
  34. faffi
    Post

    XJ700N petcock modification on/off/res

    I do not know your style of petcock internally, but with the petcock in hand, you should be able to get a vacuum if it is sealing. You can also...
    Post by: faffi, Aug 5, 2022 in forum: XJ Modifications
  35. faffi
    Post

    Tires slowly lose air.

    Rims are tubeless.
    Post by: faffi, Aug 5, 2022 in forum: XJ Technical Chat
  36. faffi
    Post

    Yet Another EFI Conversion on 1980 XJ650

    Oh, absolutely, but usually at a much slower pace and with far less corrosion in my experience. Personally, I have no particular issues with the...
    Post by: faffi, Aug 5, 2022 in forum: XJ Modifications
  37. faffi
    Post

    Brush alternators

    Yes, that is true, the Radian was definitely a parts bin special, as they say. Front brake discs were used on a number of bikes, from the RZ350 to...
    Post by: faffi, Aug 5, 2022 in forum: XJ Technical Chat
  38. faffi
    Post

    Yamaha xj 750 maxim 1982

    If you did not have a damper rod inside, the fork would fall apart and there would be nothing for the bottom bolt to thread into.
    Post by: faffi, Aug 4, 2022 in forum: XJ Technical Chat
  39. faffi
    Post

    1985 HD Roadster

    Congrats :cool:
    Post by: faffi, Aug 4, 2022 in forum: Other Motorcycles
  40. faffi
    Post

    Brush alternators

    I did not know about the output differences, which gives an advantage there for brushes. I personally would opt for brushless still, but the...
    Post by: faffi, Aug 4, 2022 in forum: XJ Technical Chat
  41. faffi
    Post

    Brush alternators

    I thought that was not until 1989? I seem to recall the test reports of the Radian back then called it a cost reducing change. Go figure o_O
    Post by: faffi, Aug 3, 2022 in forum: XJ Technical Chat
  42. faffi
    Post

    brake bleeding xj650 uk - twin disc

    I can tell you how I bleed my brakes. It works perfectly for me every time, but that does not mean it is the perfect solution. 1. I fill the...
    Post by: faffi, Aug 3, 2022 in forum: XJ Technical Chat
  43. faffi
    Post

    1982 Yamaha Seca

    Oh, forgot about the angled thing. For a straight-ish set of bars, you can use the master cylinder from the standard model XS400 if you want to...
    Post by: faffi, Aug 3, 2022 in forum: XJ Technical Chat
  44. faffi
    Post

    1982 Yamaha Seca

    Use this information as you like, but personally I find that using a master for single disc model on a twin disc model gives better braking...
    Post by: faffi, Aug 3, 2022 in forum: XJ Technical Chat
  45. faffi
    Post

    Do I have a XJ750 OR XJ700

    I would check valve clearances first, as too tight can cause loss of compression. Also, compression should be checked with throttle fully open,...
    Post by: faffi, Aug 3, 2022 in forum: Hangout Lounge
  46. faffi
    Post

    Brush alternators

    What do you say in English, once bitten, twice shy? Yamaha made some seriously costly mistakes in the 70s and early 80s, most notably the TX750,...
    Post by: faffi, Aug 3, 2022 in forum: XJ Technical Chat
  47. faffi
    Post

    Yet Another EFI Conversion on 1980 XJ650

    This may be of interest [MEDIA] The only reason I can see for converting to EFI is the fuel "quality". Moden ethanol fuel goes off quickly and...
    Post by: faffi, Aug 3, 2022 in forum: XJ Modifications
  48. faffi
    Post

    Tires slowly lose air.

    Many valve caps incorporate the tool you need [IMG]
    Post by: faffi, Aug 2, 2022 in forum: XJ Technical Chat
  49. faffi
    Post

    Tires slowly lose air.

    I have done that, often it is enough to go to anywhere between 35 and 40 PSI to get a decent seal, which you can usually run fine on unless you...
    Post by: faffi, Aug 2, 2022 in forum: XJ Technical Chat
  50. faffi
    Post

    Tires slowly lose air.

    Because not all caps are full air tight as it is not their primary task - it is to protect the valve cores from the elements. Secondary task is to...
    Post by: faffi, Aug 2, 2022 in forum: XJ Technical Chat
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