Oil Loss Gremlins

4 replies to this topic
  • twomancrew

Posted August 26, 2010 - 08:33 PM


Bike was ripping thru oil, 150-170 ml per ride. Installed new big bore 478 cylinder, piston, rings, valve seals, new intake valves & new timing chain. Old cylinder did not look that bad, could see some wear on nickasil. Still went thru 150ml per ride:banghead:, but then after about 3 rides it went down to about 60ml oil loss per ride:confused:. Did rings seat better? Then I started going thru oil again 150ml +. Found oil leak @ front sprocket counter shaft seal. Replaced w/new. Still go thru 60ml+ per ride. :bonk: The harder I ride the more oil I go thru. Any suggestions? Bike has ton of hours, runs strong, starts first kick. What is OK oil loss? 30ml? Typical ride 45m high country single track.

  • usp4u

Posted August 27, 2010 - 11:51 AM


Are you positive you are checking the oil in the correct manner ? There is a "drill" you should follow to ensure you are getting an accurate reading. See the tacked thread at the top of the forum.

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  • twomancrew

Posted August 28, 2010 - 05:44 PM


Yeah, I check it hot all the time. Make sure it's level too.

  • ZéPovinho

Posted August 29, 2010 - 02:30 PM


how many rings had the new piston? the athena big bore only has the top and the oil ring. is yours the same?

  • twomancrew

Posted September 01, 2010 - 07:18 PM


Top ring, oil ring, bottom ring. Just cannot figure it out. Yesterday road fairly hard and only went thru 10ml.

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