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  1. O

    I can't stop myself, single cam CB750

    I resemble that remark 🤣
  2. O

    Engine Crankcase Breather

    I used a pintle valve the breathes in half of what it allows out, run it into a small plastic jar with a hole in it and down to the chain
  3. O

    XS650 Top End Buildup

    I found one that had a Y shaped 2 outlet baffle and it really pulled down the crankcase, you could push the kicker down easily and the 2nd one you could push down and feel it getting easier and if you pulled the dipstick you could feel the suction really well with the double breather evacuating...
  4. O

    XS650 Top End Buildup

    Btw, I aimed an oil drain hose from the treservior I made to the chain to be a passive chain oiler. It worked pretty well.
  5. O

    XS650 Top End Buildup

    I made a PCV of sorts for mine , I had the baffle in , but I put a check valve in and used a small reservoir to store vacuum and pulled a vacuum on the crankcase to pull the pressure under the pistons to the reservoir and separate the oil and vent the air out. It worked well and it helped...
  6. O

    Power

    Naa, I still stop and listen when I hear a 360 or 270!twin. I fell in love with the XS2 42 years ago, and ironically today is my anniversary, my wife and I were married 42 years ago. I left her the 69 Galaxie, and I rode the XS2 to work. Man those are years to look back on fondly. I wish I had...
  7. O

    Power

    I’m sorry, I meant 1 carb per cylinder. The port would be like the 3V engines with a divider running down to the split into two valves. We were talking about the same thing. The smaller valves and port division are easier to keep the fuel in suspension, and the exhaust valve and port blowdown...
  8. O

    Power

    I just listened to a podcast with Darin Morgan and I am convinced that a two valve intake system with the valves making a straight shot to the chamber would have velocity to maintain fuel atoimization to the prime position for fuel to maintain its pressure and velocity to feed the plug without...
  9. O

    Power

    I was studying a cylinder head from a 447 that I had as a spare . That was a long time ago. If I had a 533 case and 880 block and even a 447 head has enough room to fit a divider in and widen the port large enough for 2 stock size valves in each cylinder and put a larger exhaust valve in the...
  10. O

    Power

    I wish that a U.S. company would reproduce the XS2 with the 533 engine and a modern head configuration. The engine could easily support a 3 valve system on each cylinder by splitting the port on the intake side and using a forked shaft rocker that can operate two smaller valves on the intake...
  11. O

    Happy New Year

    I have hope that we can get back to having fun and all this foolishness in the world can end peacefully. Hoist a glass 🥃 to good sense and all of the posers will fall by the wayside. We can get back to normal. Happy 2023!
  12. O

    Power

    I like that strategy, even the early Hemi suffered mixture speed changes that affected fuel atomization. The use of squish to keep the fuel atomized and the air moving at the speed needed to get a clean burn is what makes this engine happy. I like the 360 degree rawness, but the 270 degree...
  13. O

    Power

    The valve lift is a big limitation of the original design. If I had .500 to work with I definitely would fill in the SSR and widen it and make the port cross the guide to make the mixture feed the plug like a cigarette and shorten overlap. A Hemi likes that. I had a friend with a 505 ci FE SOHC...
  14. O

    Electric vs Kick start

    That cheap later arm should have been outlawed. If you kick it all the way down even it is still in kick back territory and the arm that was on my 79 lower end happened to be the rrrrrrrrrrrr one. After rebuilding it as a 700cc 9.25:1 top end with a points and advance settup and 14 degrees...
  15. O

    Power

    I don’t want to be contrary, I apologize for being so. I appreciate all good information. I won’t be spreading bad information. That was what I came with. The combination is closely related to David Vizards design principles and the Shell Thuet racing design. The XS650 with a big big bore 750...
  16. O

    Electric vs Kick start

    I almost dislocated a knee half hearted kicking a 1000 Sportster and it kicked my knee right into that F’d up handlebar set they had. I have gotten into the habit of kicking any bike on the right side with my right foot on the ground and kicking with my weight on my left foot, and I kick it...
  17. O

    New XS650....new to everything and a battery question

    You also have a neutral safety switch. There should be a green light when it is in neutral and it should turn off if you place it in gear. The plug goes into the middle of the crankcase. You may need to check it by toggling it from neutral to 1st and back to see if it is working properly.
  18. O

    New XS650....new to everything and a battery question

    Put some ATF in the cylinders and drain the oil and fill the sump with ATF with a new filter. It’s likely that water may run out before oil . If was stored outside. While it is soaking send the tank to a company that restores rusty fuel tanks and you may possibly need new Petcocks (fuel feeding...
  19. O

    Electric vs Kick start

    Have you ever seen the picture of the Yamaha with a pulley and a bracket with a little 4 cylinder Ford alternator and a belt running back to the alt pulley and wired to the battery? That was hilarious. I guess I m odd, but I always kicked the bike to start the only time I used the electric is...
  20. O

    New XS650....new to everything and a battery question

    I wired my last bike with relays for high draw stuff with baby spade blocks to trigger the relays. And the fused stuff with a spade weatherpack all tucked in. The loom became so much more elegant and after that I drew out a schematic with numbers to make the loom easy to follow. I printed it out...
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