Planet Minis

Z'mnypit · 11-04-2009, 06:44 AM

I recently rebuilt my other 110 with a new jug, piston and rings. Started it for the first time last night. I havent got the counter sprocket back on yet and noticed its pushing a little oil out around the shaft the behind where the sprocket would be. If you place your hand over it you can feel the air coming from around the seal. I let the bike idle for about 20min before I noticed it. The vent tube is new so I know its not stopped up.

Does the seal need replaced or have the rings just not seated?

mutinytattoo · 11-04-2009, 07:28 AM

i would think that seal was bad. . . i had a cr250 that blew oil out from behind the sprocket. . didnt notice any air tho. dont know if that is any help lol. i wouldnt think the rings should let any air through.

35mastr · 11-04-2009, 09:31 AM

I dont know if those rings have direction,But if they do and are on upside down that will cause it.

11-04-2009, 06:44 AM	#1 (permalink)
Z'mnypit 2nd Gear Member Join Date: Nov 2007 Location: Springville, AL Posts: 413	Crankcase pressure/blow by question I recently rebuilt my other 110 with a new jug, piston and rings. Started it for the first time last night. I havent got the counter sprocket back on yet and noticed its pushing a little oil out around the shaft the behind where the sprocket would be. If you place your hand over it you can feel the air coming from around the seal. I let the bike idle for about 20min before I noticed it. The vent tube is new so I know its not stopped up. Does the seal need replaced or have the rings just not seated?

11-04-2009, 07:28 AM	#2 (permalink)
mutinytattoo 2nd Gear Member Join Date: Mar 2009 Location: ogden, ut. Posts: 339 My Mood:	Re: Crankcase pressure/blow by question i would think that seal was bad. . . i had a cr250 that blew oil out from behind the sprocket. . didnt notice any air tho. dont know if that is any help lol. i wouldnt think the rings should let any air through.

11-04-2009, 09:31 AM	#3 (permalink)
35mastr 2nd Gear Member Join Date: Sep 2009 Location: Newark,Ca. Posts: 566 My Mood:	Re: Crankcase pressure/blow by question I dont know if those rings have direction,But if they do and are on upside down that will cause it.

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