750 big bore

  1. SomervilleXS650

    750 Big Bore Kit / BBK INSTALL

    EDIT: Making this into a 750 BBK installation thread. Picked up one of the 750 kits recently and was thinking about making the changeover before Spring. If I do, I will probably take some pics and document in my build thread, but wanted to ask a couple questions in a standalone thread for...
  2. aDotInTime

    Help! Trouble with Kickstart/Clutch?

    Hey everyone. I finally decided to get out from under my own fear of not knowing a god damned thing and ask for help. I have a '71 with a 750 big bore kit, HHB PMA, and Boyer's ignition. I bought it from a fellow last week and over the weekend dropped the engine into my bobber frame. I cut...
  3. A

    Potential disadvantages of basing a built 750 on an XS2 engine?

    A while ago, I bought a used XS2 engine, planning to use it for my 750 rephased build. I already have a rebuilt 533 crank, MrRiggs rephased Shell#1 cam, "big fin" 750 cylinder block, and Wossner pistons for this build. Is there anything different with regards to primary drive, clutch or gearbox...
  4. funky

    Bit the Bullet

    Hi all its been a while hope you are all well . My XS started burning oil the old 75mm sleeves had been rebored to the max 77.5mm... not sure if the could go any further but 707cc pistons were now too small ring gap was at the top end of tolerance at the last rebuild. Yes I have bit the bullet...
  5. C

    keihin pwk 32 with 750 big bore

    hey all, so i just ordered a set of 750 barrels for my chop project. ive got a set of pwk32 i was going to run. does anyone have any tips or a good starting point jet wise? itll have open pipes and some kind of clamp on airfilters thanks
  6. XS650 270 Degree Rephased 750 Big Bore kit WWII Military Theme Motorcycle on the Road Again - YouTube

    XS650 270 Degree Rephased 750 Big Bore kit WWII Military Theme Motorcycle on the Road Again - YouTube

    The XS-LA The inspiration for this project came surprisingly from a Bloomingdales catalog with a vintage World War II motorcycle on the cover. Something abou...
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