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  1. Minimutly
    Post

    XJ750 Pod Filter not running well around 5-6K RPM

    "I believe when the airbox is eliminated there is less pressure difference between the inlet and the diaphragm chamber, requiring a weaker spring"...
    Post by: Minimutly, Apr 24, 2024 in forum: XJ Technical Chat
  2. Minimutly
    Post

    XJ750 Pod Filter not running well around 5-6K RPM

    A simple test would be to add some spacers under the springs - say 5 to 10 mm. this would add to the static spring pressure, making the lift point...
    Post by: Minimutly, Apr 24, 2024 in forum: XJ Technical Chat
  3. Minimutly
    Post

    XJ750 Pod Filter not running well around 5-6K RPM

    When you remove the airbox the inlet pressure goes up - are we agreed? This follows because the airbox and filter is a restriction (lower than...
    Post by: Minimutly, Apr 24, 2024 in forum: XJ Technical Chat
  4. Minimutly
    Post

    XJ750 Pod Filter not running well around 5-6K RPM

    Actually @Simmy , I'm going to disagree with you here, what you need is a stiffer spring (to counteract the increase in inlet pressure (the bit...
    Post by: Minimutly, Apr 24, 2024 in forum: XJ Technical Chat
  5. Minimutly
    Post

    What did you do to your Yamaha today?

    No, it goes up in response to the vacuum below it (between it and the main jet), which connects to the area above the diaphragm. Essentially to...
    Post by: Minimutly, Apr 24, 2024 in forum: XJ Technical Chat
  6. Minimutly
    Post

    Selling 1983 XJ900 Jon Fife build. Ex Cond

    Almost impossible to price, or sell I would imagine... Nice!
    Post by: Minimutly, Apr 18, 2024 in forum: For Sale, Trade/Swap, Wanted
  7. Minimutly
    Post

    Exhaust Options for the 1983 XJ650 Maxim in 2024

    You could look around for a used 4 into 1? I'm sure somewhere on Earth there must be some for sale?
    Post by: Minimutly, Apr 9, 2024 in forum: XJ Modifications
  8. Minimutly
    Post

    Im lost.

    Yes, just putting them through an ultrasonic cleaner will not do - you still need to check all the jets and passages, replace the throttle seals,...
    Post by: Minimutly, Apr 8, 2024 in forum: XJ Technical Chat
  9. Minimutly
    Post

    Proper Valve Clearance Measurent?

    This makes sense to me. Some things that can throw you off here - oil film under the followers is one, another is cam bearing wear/clearance (and...
    Post by: Minimutly, Apr 6, 2024 in forum: XJ DIY How-To Instructions
  10. Minimutly
    Post

    What did you do to your Yamaha today?

    Yes the idle mixture screws contribute at all throttle openings, but I would suggest the effect is tiny, given the size of the jets etc.
    Post by: Minimutly, Apr 6, 2024 in forum: XJ Technical Chat
  11. Minimutly
    Post

    Ikea 1984 XJ1100... some assembly required

    "The frame has some rust and the upper crankcase has a couple of the threaded holes for stator bolts partly broken. when I get it going and if I'm...
    Post by: Minimutly, Apr 6, 2024 in forum: Hangout Lounge
  12. Minimutly
    Post

    Exhaust Sound

    Lol at all this - yes it might seem a good idea to make a load of noise, peeing off the neighbours is never a good idea. Having said that, my Seca...
    Post by: Minimutly, Apr 4, 2024 in forum: XJ Technical Chat
  13. Minimutly
    Post

    Carb jetting

    Time to pull all the jets to check whats where by the looks of it...
    Post by: Minimutly, Mar 30, 2024 in forum: XJ DIY How-To Videos
  14. Minimutly
    Post

    1100 Project

    If he had your fingers and brains he would have done it for you...
    Post by: Minimutly, Mar 27, 2024 in forum: XJ Technical Chat
  15. Minimutly
    Post

    Journals after resurfacing

    Don't make this hard. Compressed air won't shift it - get a piece of steel dowel, cut. slot in the end and drop some emery tape in there. Stick...
    Post by: Minimutly, Mar 23, 2024 in forum: XJ Technical Chat
  16. Minimutly
    Post

    Journals after resurfacing

    The "headers" is usually term for exhaust downpipes. The bits you need to clean are the machined surfaces - bores, top of the cylinders, underside...
    Post by: Minimutly, Mar 22, 2024 in forum: XJ Technical Chat
  17. Minimutly
    Post

    Camshaft End-play

    Well yes you can, but I just do it by feel, and then use a dti on the cam, (dry), lifting it up and down to indicate clearance. I've used valve...
    Post by: Minimutly, Mar 22, 2024 in forum: XJ Technical Chat
  18. Minimutly
    Post

    What have I done?

    Now, don't cock up drilling out those studs - you can use a left hand drill, left hand tap even, but m4, or max m5 is the limit. I would drill 3mm...
    Post by: Minimutly, Mar 21, 2024 in forum: Hangout Lounge
  19. Minimutly
    Post

    Camshaft End-play

    You can "refit" the cam caps to an extent, but you have to be clever about it - it needs metal removing from the mating face, very carefully, and...
    Post by: Minimutly, Mar 21, 2024 in forum: XJ Technical Chat
  20. Minimutly
    Post

    What have I done?

    Nooooo. Put the engine in, if it runs and is anywhere as good as it looks it will be fine. Splitting the cases to inspect the starter clutch is...
    Post by: Minimutly, Mar 21, 2024 in forum: Hangout Lounge
  21. Minimutly
    Post

    What have I done?

    Shine a torch in the tank - 90% of the issues with these is rusty fuel contaminating the carbs, jamming the float valves open etc. The frame looks...
    Post by: Minimutly, Mar 20, 2024 in forum: Hangout Lounge
  22. Minimutly
    Post

    Xj600 Mikuni bs32 carbs

    I uploaded some pics here because I couldn't seem to do it in private message.
    Post by: Minimutly, Mar 19, 2024 in forum: For Sale, Trade/Swap, Wanted
  23. Minimutly
    Post

    Xj600 Mikuni bs32 carbs

    [ATTACH] [ATTACH] [ATTACH] [ATTACH]
    Post by: Minimutly, Mar 19, 2024 in forum: For Sale, Trade/Swap, Wanted
  24. Minimutly
    Post

    24 Hours ago...

    Well done, threatening to drag my maxim out to mot test it. Just so wet here at the moment..
    Post by: Minimutly, Mar 16, 2024 in forum: Hangout Lounge
  25. Minimutly
    Post

    Xj600 Mikuni bs32 carbs

    are you after a working set or a mint set? I have a set I used after cleaning, they worked fine, but I would need to check if they are complete...
    Post by: Minimutly, Mar 14, 2024 in forum: For Sale, Trade/Swap, Wanted
  26. Minimutly
    Post

    Simmy's Naked Turbo Project

    The slide is lifted by the vacuum under the bottom of the flat bit being fed to the top of it - yes I know, with the turbo there is no vacuum, but...
    Post by: Minimutly, Mar 14, 2024 in forum: XJ Modifications
  27. Minimutly
    Post

    Simmy's Naked Turbo Project

    Lotus Esprit turbo (Dellorto carbs), MG Metro turbo, MG Montego turbo (single SU), Renalt 5 turbo , Renault 18 (Solex). Loads more... With your...
    Post by: Minimutly, Mar 13, 2024 in forum: XJ Modifications
  28. Minimutly
    Post

    What did you do to your Yamaha today?

    Yes, never a good idea I agree, but of course the head is the same as the 650, so the gasket sits against the head - I've no idea what the...
    Post by: Minimutly, Mar 12, 2024 in forum: XJ Technical Chat
  29. Minimutly
    Post

    What did you do to your Yamaha today?

    one thing I noticed - the head gasket overhangs the bores (by a mm or so) - is this normal or has someone slung on a 650 gasket?
    Post by: Minimutly, Mar 12, 2024 in forum: XJ Technical Chat
  30. Minimutly
    Post

    What did you do to your Yamaha today?

    Today I removed the head from a "spare" 750 engine - the camchain was broken, so I expected to see bent valves, but they were ok? Anyway, the cam...
    Post by: Minimutly, Mar 11, 2024 in forum: XJ Technical Chat
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