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  1. sandmanred

    Needle position question 78 XS400

    I'm re-jetting due to and exhaust change, still running stock air box and filters. I've gone up 2 sizes on both pilot and main and so far dropped the needle one groove. It runs good across all throttle positions and through all rpms except in the 5000-7000 rpm range at WOT where it falters a...
  2. sandmanred

    What series pilot jet for 78 XS400?

    I see the manual has the stock pilots at 42.5, which mine have printed on them. I need to go up a size or two so I got some VM22 47.5 pilots from Jets R Us and I'm pretty sure I ordered the wrong style. They fit but I went way rich and I can see the orifice is much larger than stock, more...
  3. sandmanred

    Need to paint black header wrap?

    I got some black header wrap that states it needs to be painted to retain it's black color. Anybody have any experience with black header wrap and how it ages with or without paint?
  4. sandmanred

    Rear brake stop

    Re-assembling after paint and powder. Having trouble remembering the assembly in the rear brake stop area on a 1978 XS400E. Parts diagrams have not been detailed enough to help much. Does this look right?
  5. sandmanred

    Rubber slugs in head fins?

    How important are these little rubber slugs? Any risk in just taking them out?
  6. sandmanred

    idle question

    My 78 XS400E will idle at 2000-2500 rpm for a few secs when I come to a stop once it's warmed up and run at cruising speed. Sometimes more than a few seconds. Giving the throttle a rev will often bring it down to 1200-1500 but it also will come down on it's own. Is this normal? Anything to...
  7. sandmanred

    Red line

    What's normal for a 78 XS400E as you approach red line rpm? Mine is pretty solid and powerful from about 5000 to 8000 rpm once it's all warmed up. It begins to falter a bit as you press over 8000 rpm, power falling off and sounding like it's miss firing a bit. Should that power continue to...
  8. sandmanred

    After market mufflers

    Has anyone one found a good quality aftermarket muffler with removable baffles? If I can remove them and modify them I can dial them in so I don't have to mess with re-jetting. Please attach pics and source.
  9. sandmanred

    Torque spec on main drive?

    In the process of removing the main sprocket to get to the collar and oil seal I found zero torque on the nut, after the bent washer was flattened I remove the nut with my fingers. That just doesn't seem right. Of the course the collar is 6 weeks so I sanded out the rough spots with 600...
  10. sandmanred

    Output shaft seal replacement

    Trying to avoid tearing things apart just to see what to order. What parts should be replaced on a main seal? Obviously the seal (32) but I assume also the collar (33)?
  11. sandmanred

    Powder coating rear wheel

    I'd like to powder coat my rims but I see the cushions on the rear rim are embedded in the casting. Anyone have experience powder coating the rear rim? Will the cushions take the heat, up to 400F?
  12. sandmanred

    Best wheel weights?

    I will be painting or powder coating my cast wheels soon. Where is a good source for wheel weights? What kind work best? Are dyna beads any good?
  13. sandmanred

    Filter foam source?

    Has anyone found a source for foam used in the air filters? I have a small tear in one and it looks like I could just replace the foam instead of replacing the entire filter assembly.
  14. sandmanred

    Wanted - Exhaust mufflers for 78 XS400E

    Looking for mufflers both left and right for 78 XS400E. This is the style with no cross tie. Surface rust OK but not rust through or other modifications. Thanks!
  15. sandmanred

    H4 conversion

    Searched this topic and couldn't find what I was looking for. I think I'd like to run an H4 35w bulb with the stock bucket so this means finding a replacement reflector assembly. Candlepower no longer offers their reflector kit and it doesn't sound like it was plug and play anyways. Almost...
  16. sandmanred

    Sprocket changes?

    I have a 78 XS400E. I bought it last fall and only got it fired up and running a few days before riding season was over :-( Sprockets and chain are in need of replacement. My original plan was to start up in the spring and get a few more miles before I replace them. But now I plan to extend...
  17. sandmanred

    Wanted - XS400E XS400F rear swing arm with bearings/bushings intact

    1978 1979 XS400E XS400F rear swing arm with bearings/bushings intact.
  18. sandmanred

    New guy, new build

    Just picked up a 78 XS400. Wasn't running when I got but but has been inside most of its life so everything is pretty clean for a 40 year old machine. The carb rebuild section in tech was extremely helpful getting through the carbs. It took a few tries but I finally got them cleaned up and...
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