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  1. J

    Surging idle on choke. Not running without.

    Ok so I have two carb sets and switched back to the carb with stock pilot jets. I have stock exhaust. Stock air cleaners. I'm 3 turns out on the mix screw. And when I start it the idle still surges on choke. I was able to start it without choke eventually. And the idle seemed smoother but as...
  2. J

    Surging idle on choke. Not running without.

    The pilot jet is a 45 . I made a typo
  3. J

    Surging idle on choke. Not running without.

    The pilot jets are sized up to 145. With stock exhaust and stock air filters. 3 turns out on the mix screw. When full choke It runs super high rpm. When I take it off choke it dies. I feel like it's running lean. Any ideas ? Is the pilot screw too big ? The pilot jet is not blocked. It was...
  4. J

    Surging idle on choke. Not running without.

    The pilot jets are sized up to 145. With stock exhaust and stock air filters. 3 turns out on the mix screw. When full choke It runs super high rpm. When I take it off choke it dies. I feel like it's running lean. Any ideas ? Is the pilot screw too big ?
  5. J

    1979 XS400 build with Mikunis -- carb advice needed

    The paper inside is starting to tear. My question is also, when I got the bike the pilots seized so I had to destroy them to get them. I replaced them with a size bigger and I feel like the bike doesn't pull as hard as my other Xs400. Do you think using uni pods without the H pipe might justify...
  6. J

    1979 XS400 build with Mikunis -- carb advice needed

    Do you have a part number for the uni filters you would recommend? They fit with the stock battery box on the H pipe? I saw on another post you cut the flange out of the a stock pair of filters.
  7. J

    Free - 1978 XS400 plus parts

    Wow this bike is super clean. You could probably sell this for a good amount. Especially in California. Everything cost more there .
  8. J

    Can I use a 1978 front brake caliper in a 1981 sohc

    My piston was seized so I ordered a used brake caliper form eBay, but it was a 1978 caliper (oops), the caliper still mounts to the bike, is it still compatible?
  9. J

    Wanted - Headlight ring and mount ring

    I actually just went ahead and bought a new head light ‍♂️. A brand new bucket and all the mounting rings wasn't much more than replacing the stock hardware , and I already had the bulb.
  10. J

    How to make the tires the same height.

    5.0 inches into mm is 127 4.5 inches into mm is 114. Would they make a tire that is unsafe ?
  11. J

    How to make the tires the same height.

    The look. I got a stock 400. I picked this one up for 200 bucks in rough shape so I figured I'd have some fun with it. I'm sure raked out front ends and hard tails aren't good for handling either, but it sure looks cool. What if I take off the chain guard. Would there be an issue then?
  12. J

    How to make the tires the same height.

    This is the one I have at the moment
  13. J

    How to make the tires the same height.

    It has mags, I plan on raising the rear seat hoop and fender.
  14. J

    How to make the tires the same height.

    Thanks Leo, you're about to be a Guru on Both websites! Let me ask you this ; would there be any adverse effects from putting a 5.0 tire on a 16 inch rim, that does seem awfully tall.
  15. J

    How to make the tires the same height.

    I'm trying to make the tires the same height I know the front is 18 and the rear 16 I was going to do 4.0 -18 in front And 4.5-16 in the rear Would that work?
  16. J

    Wanted - Headlight ring and mount ring

    I have an 81 xs400 special SOHC I have the headlight bucket and the wiring and the bulb I need the bulb mount ring and the ring that holds it all in. Who's got one? There's a mount ring on eBay for an 82xs400J but i don't know if that would fit mine.
  17. J

    Carb slide thumb test. Failed.

    So I've always heard that if you cover the big hole in the Venturi with with you thumb and let the slide come down it should fall slowly from the suction. My bike was having a hard time running and I switched it with my other carb (which passes the thumb test) and now it seems to be running...
  18. J

    For Sale - 1982 DOHC XS400 – $400 obo

    Not without modifications. I wonder how difficult it would be
  19. J

    For Sale - 1982 DOHC XS400 – $400 obo

    South suburbs of Chicago, Lockport Illinois
  20. J

    Sold / Found / Inactive - mikesxs front master cylinder

    My bars are absolutely flat. So I'm still in.
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