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  1. sprocket

    big block XS250 (400) Turbocharged

    Microsquirt EFI controller. Open source. I think he's using Ducati throttle bodies. At least earlier in the thread... who knows now :D
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    Are we destined to "graduate" to xs650s?

    Well, My first XS was a 750 special, so I guess I got demoted when I got my first XS650 :) Now I'm down to 1 XS400, 2 650s, and 2 1100s. The rest of my stable is Honda. XS650 isn't exactly long distance touring bike. Actually, the 400 is smoother at higher RPM and the 650 can numb yer butt in a...
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    Maxim swingarm swap

    The offset is different I believe. I have modified one using the XS400 pivot tube welded where the Maxim pivot tube was removed. It was also modified by flipping the monoshock brace as an underbrace to be set up for HD softail shocks. ONLY cut the welds and it should align fairly close. I'd do...
  4. sprocket

    XS400 intake single carb

    $85 USD + shipping. I need an address to get quote on shipping. That is straight back basic. +$10 for vacuum port (for vac style fuel tank valve) +$15 for angled to one side (usually opposite kicker) These place the carb right where the stock battery box goes (straight basic) The side...
  5. sprocket

    2-to-1 carb

    I built this manifold and many like it for both XS400 and 650. I CNC machine flanges and the rest is of course aluminum tubing. All welds are finish ground smooth inside manifold for airflow. Recommend silicone hose for the carb connection, can be found at most turbo suppliers. Hose should...
  6. sprocket

    ID of carbs

    For a single carb I've heard nothing bad about using one of the stock carbs. I've been building these for a few years for both XS400 and 650. You will find that the #1 cylinder is slightly lean and there's really nothing you can do to fix that with a single carb. It has to do with the crank...
  7. sprocket

    XS400 intake single carb

    Sorry it's been a busy summer and I haven't been a good forum junkie...lol Yes I still have these, Building one today for someone in AUS as a matter of fact. Plenty of tubes in stock and flanges for at least 8 more manifolds. Here's some pics of completed manifolds and a few installed on...
  8. sprocket

    80mph tumble

    Sorry to hear of your crash and glad to hear that you're OK. The bike will get rebuilt, more importantly, you don't need to be rebuilt! I was thinking of putting bags on my XS400, but ended up putting them on my CB836 chopper instead. As far as speed wobble, when was the last time you serviced...
  9. sprocket

    Will 1982 motor fit in 1978 frame?

    Sounds like that '78 frame/'82 motor is chopper fodder :D Anything will fit if you want it to!
  10. sprocket

    Rain induced backfire?? Possible?

    yeah but it lasts while WD40 evaporates and you need to reapply regularly. It's only as messy as the person who applys it :)
  11. sprocket

    Giveaway: Set of rims from Mike's XS (ends 11pm CST July 15, 2012)

    Put me in for a set of new rims! need something new for the LSR bike!
  12. sprocket

    Wanted - Wiring Harness XS400G/SG (electronic ignition)

    I told ya shipping would be a bitch. Good luck with the mods to your existing harness. Fed Ex and UPS both wanted $221 for the cheapest shipping. I thought $75 was rather cheap. No big deal, not a big effort, just took pics and boxed it up, 3 websites found the best shipper cost...
  13. sprocket

    Wanted - Wiring Harness XS400G/SG (electronic ignition)

    Here's some pics, and yes it is electronic, no points! $60 for the harness and $75 USPS Express International flat rate box. Total $135 USDollars Paypal to: dtrubel@comcast.net Pics show complete harness and each area that connectors are pulled out of the main bundle. I will ship as...
  14. sprocket

    big block XS250 (400) Turbocharged

    For decomp provision, early XS650 used a modified valve adjuster cover with a small lever that pushed open one exhaust valve to let off compression. Operated by a cable (like a choke cable) Different real estate to be modifying, but might be easier and safer than a plate to do this simple task...
  15. sprocket

    Wanted - Wiring Harness XS400G/SG (electronic ignition)

    Sorry, I've been out of town and haven't gotten to this yet. I'll try to get it boxed up today and check on UPS, Fed-Ex...
  16. sprocket

    I am close to giving up

    Drewp... go back to polishing you whitworth wrenches...:D :laugh: :doh:
  17. sprocket

    Safety Relay

    one is the kickstand safety switch, so you don't go riding off with the stand down. The other is neutral safety switch, so you can't start it in gear.
  18. sprocket

    Wanted - Wiring Harness XS400G/SG (electronic ignition)

    I have an '81 harness, but the trip across the pond might be a bit exce$$ive. I'm in Michigan. PM if interested.
  19. sprocket

    Wanted - Front fender 1979 xs400F

    I should have an '81 in the shed. Will look today and get a few pics for ya, and check condition for price...lol The trip to Cali from MI might be more than the part though.
  20. sprocket

    Wanted - 1978 Rear Grab Bar

    '82 is DOHC and a different bike than previous SOHC bikes. Fit, unlikely. Sounds like a few have them available, but if needed I have one from an '81.
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