First bike, R65

Discussion in 'Airheads' started by MattySull, Apr 21, 2012.

  1. supershaft

    supershaft because I can

    Joined:
    Sep 9, 2010
    Oddometer:
    9,116
    Location:
    San Francisco Bay area
    Do people really replace push rod tube seals like that? I would highly recommend taking the cylinder off and replacing the O-rings, cleaning the sealing surface and applying some Durko, adding a cylinder O-ring if it doesn't have one and has the recess for it. I would clean the combustion chamber too and re-align the rings. Remove the lifters too and check for pitting. Of course, before I took it apart I would do a leak down test and see if any valves are leaking and take care of that while I was there if need be.

    Myself and others I have known use to torque down heads to 28ftlbs no problem until I heard of everybody else stripping them. I now torque them to 26ftlbs per a BMW service bulletin. The bulletin was about reducing cylinder distortion on nikisil cylinders, not pulling the studs but . . . .

    I put 106,000 miles on a LS. Lots of fun! Good handlers but my setup always under steered. Siebenrock makes a cam for them. I would like to try raising the CR, a cam, and some carbs on one. Personally, I wouldn't go with a bigger bore. It's already short stroke enough IMO at 1.33:1. The same as a R100. And the shorter cylinders are my favorite part of them so I certainly wouldn't want to put a bigger engine in.
    #21
  2. Bill Harris

    Bill Harris Confirmed Curmudgeon

    Joined:
    Sep 20, 2008
    Oddometer:
    8,678
    Location:
    backwoods Alabama
    Haynes or Clymer is hardly an immutable authority on torque values. The charts in the factory manuals are canned DIN references.

    Consider it in context: how often are you going to torque (or retorque) cylinder head nuts in a dry condition? 17 ft-lbs is an absurdly low value for head bolt torque.

    But use it if you want to... :)
    #22
  3. MattySull

    MattySull Adventurer

    Joined:
    Jun 3, 2010
    Oddometer:
    35
    Location:
    Boston
    I've got a little update other than torque specs. I went cruising around for a few hours and noticed I have been hitting a false neutral between 2nd and 3rd. If I shift up from this neutral I go straight to 3rd. I will attempt to adjust the shifter lever because it has some play in it. I've read preloading the shifter lever helps too so I will practice that technique and see how it goes.
    #23
  4. mrbindc

    mrbindc Adventurer

    Joined:
    Apr 26, 2012
    Oddometer:
    75
    Location:
    Alexandria, VA
    #24
  5. MattySull

    MattySull Adventurer

    Joined:
    Jun 3, 2010
    Oddometer:
    35
    Location:
    Boston
    I have yet to sign up for R65.org and the seat is from Vietnam.
    A guy in a previous post mentioned the hondaclassic31 seller had terrible reviews and I can't entirely agree with that. He had about 4 reviews mentioning quality issues of a specific honda cafe racer seatcover
    and I would absolutely expect mediocre quality out of the seat I'm getting but as far as terrible reviews I don't see many.

    I'll sign up for the forum soon.
    #25