Mixing oil and grease

Discussion in 'Motorized Bicycle General Discussion' started by littletinman, Oct 2, 2012.

  1. littletinman

    littletinman New Member

    Joined:
    May 15, 2012
    Messages:
    231
    Likes Received:
    0
    Hi All,

    Quick question, I have a bunch of motor oil that I use for lubing some stuff on my bike because it can drip down where grease can't reach without disassembling. I also have red grease I use pretty much everywhere. My question is, can I put both in the clutch shaft area? The grease doesn't want to get all the way to the bearings and the oil will. What do you recommend?

    Also, how should I grease the bearings on the crank part of the engine? the bearings on the side of the bevel wheel gear shaft.

    Looking forward to responses!
     
  2. Ludwig II

    Ludwig II Active Member

    Joined:
    Jul 17, 2012
    Messages:
    4,581
    Likes Received:
    1
    I'm going to suggest investing the time in stripping the parts down and fitting grease nipples where they will deliver the grease to the correct parts. That way, there's no compromise on the sort of lubricant you need.
     
  3. Pilotgeek

    Pilotgeek New Member

    Joined:
    Apr 6, 2011
    Messages:
    403
    Likes Received:
    0
    Are you talking about greasing the crankshaft bearings too? You don't want to or need to grease those, they get lubricated from the inside of the engine. They're only sealed on the outside. The oil you mix with the gas lubricates those.
     
  4. littletinman

    littletinman New Member

    Joined:
    May 15, 2012
    Messages:
    231
    Likes Received:
    0
    I'm mainly talking about the clutch bearing area.
     
  5. pwatson

    pwatson New Member

    Joined:
    Oct 3, 2012
    Messages:
    1
    Likes Received:
    0
    Motorcycles typically have a wet clutch that is oiled with the crankshaft motorcycle oil, so I would say use the oil.
     
  6. JonnyR

    JonnyR New Member

    Joined:
    May 13, 2012
    Messages:
    1,203
    Likes Received:
    0
    whats wrong with lubing the crank and wrist pin bearings
     
  7. littletinman

    littletinman New Member

    Joined:
    May 15, 2012
    Messages:
    231
    Likes Received:
    0
    JohnnyR, we're talking about the big bearings on either side of the crank weights.
     
  8. JonnyR

    JonnyR New Member

    Joined:
    May 13, 2012
    Messages:
    1,203
    Likes Received:
    0
    but im going to do the wrist pin and want to know
     
  9. Ludwig II

    Ludwig II Active Member

    Joined:
    Jul 17, 2012
    Messages:
    4,581
    Likes Received:
    1
    If a 2 stroke is running with the correct oil ratio and type of oil, greasing the internal bearings of the engine is unnecessary. It's how they're designed to work.
     
  10. JonnyR

    JonnyR New Member

    Joined:
    May 13, 2012
    Messages:
    1,203
    Likes Received:
    0
    but i want to know if its going to hurt anything in the long run if i do it because i build engines and dont like dry bearings
     
  11. Ludwig II

    Ludwig II Active Member

    Joined:
    Jul 17, 2012
    Messages:
    4,581
    Likes Received:
    1
    A thin smear on the rebuild's probably a good idea, but the last time I started up a 2 stroke that had been stored dry, I just flooded the engine with 2 stroke oil, turned it upside down etc and got the right oil on the bearings. It took a couple of plug cleans before it ran long enough to stop making clouds of smoke, but it had the best start in life I could give it.
     
  12. Pilotgeek

    Pilotgeek New Member

    Joined:
    Apr 6, 2011
    Messages:
    403
    Likes Received:
    0
    I use an electric grease gun. If you take the clutch actuator rod and bearing out of the sprocket and compress some grease into it, it gets through the bearings for sure. After taking off the clutch one time, I noticed the entire back half was caked with grease that leaked through the bearings. It's also possible to unscrew the clutch cable holder above the shaft and put grease in through there.

    As for the little tiny bearings that the clutch gear rotates on, the ones where you can actually see the balls in the races, I used to use oil but it would fling out eventually. If you take the clutch off, there are holes on the back of it that you can push grease through to fill up the races.
     
    #12 Pilotgeek, Oct 3, 2012
    Last edited: Oct 3, 2012

Share This Page