Got my head back form Buzzard Friday all very nice, he had to make arbors as they are 8mm guides, and could just get the cutter to open up enough for the huge valves, new stainless valves, engine is back together and in the frame.

Are the carbs the right ones, i have a ltd but it has A1,2 carbs and it had the same problem even with 17.5 jets, the actual problem was the bike leant over too far meaning the fuel level would be too low on the right hand side of the bike and would do the same as yours as it has the short jets in t...

A couple of twists of ptfe tape on the nipple thread stops air getting in, my dad taught me this in the late Seventies and i never have a problem with bleeding.

Has to be float valves letting by.

They are shims, and yes you need to check those, also cam chain tension, engine timing, a whole service really with the carb balancing last.

Pigford wrote:I had one in 1979 - pile of shite

XS650 1980.JPG

That's because yours was a twin disc's version Mark,

ADRIAN H wrote:Good start. Is that a XS650 US Special ? - I am a bit concerned about your Rearsets back plate - not sure timber board is a good idea. LOL.

That's just to stop the stand from hitting the newly painted arm and footrest hangers, I'm sure you already knew that though.

Got myself another XS650 earlier this year, just doing another good tidy up, replacing whats needed and painting all the black bits, also sorting motor which was more work than i needed cam guides replaced, seals a plethora of other bits, been re-bored to 666 by my calculations why the other work no...

Yours look like they are portrait, so before you load them edit them so they become landscape and they should load up properly

That's coming along lovely Bill, skilled workmanship, just need to improve on your picture loading skills now as i am getting a cricked neck,

As you have pods, after market exhaust and air corrector jets probably means you have it in the ball park for your set up, really need to get it on a dyno now to get the fine tuning done.

If that fails it could be the bowls are warped due to overtightening and only nipping up on the corners. If that's the case you need to lap them with wet'n'dry on a flat plate. Or add another set of bowl gaskets. more gaskets could make it worse, as you then have a larger cushion between both parts...

I guess its a Z1B 900, the 495 is correct, you should have more travel though, maybe the wrong springs right length possibly to thicker wire.

From the info i Have Warren, the springs should be 511mm, if less than 485mm they need replacing, so the longer ones appear not to be for a B or A model.

Some of those fleebay units are really just rubbish, i had three M&P ones for my 350f and they were crap cheap Chinese junk, got my money back, got electrex world one, UK made and does the job properly, will always use electrex world ones now.