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General Category => General Discussion => Topic started by: atavar on August 17, 2015, 02:50:46 PM

Title: BlowBy
Post by: atavar on August 17, 2015, 02:50:46 PM: So, as noted in my oil change from hell thread, when I ran the engine with the dipstick removed (fresh fill to measured capacity) I got enough of a pulsing wind out of the dipstick hole to put a nice oil mist over everything. Is this normal on these engines with their small crankcase volume or do I have a problem? It really didn't smell strong like blowby, I am hoping it is just compressor effect from piston displacement..
C'mon, one of you gullible Norge owners go out with a rag and pull the dipstick and start the engine and tell me what happens to you.. :popcorn:
2008 Norge with about 40Kmiles on the clock.
Title: Re: BlowBy
Post by: Zoom Zoom on August 17, 2015, 02:53:54 PM: No that is normal.

ZZ
Title: Re: BlowBy
Post by: normzone on August 17, 2015, 02:56:10 PM: [atavar], check your serial numbers on your engine/frame.

If it ends in either a letter or a numerical designation, there may have been a recall addressing this very issue.

:wink:
Title: Re: BlowBy
Post by: rocker59 on August 17, 2015, 02:57:19 PM: Quote from: normzone on August 17, 2015, 02:56:10 PM
[atavar], check your serial numbers on your engine/frame.

If it ends in either a letter or a numerical designation, there may have been a recall addressing this very issue.

:wink:

LOL! :cheesy:
Title: Re: BlowBy
Post by: Sasquatch Jim on August 17, 2015, 03:00:41 PM: It's a design feature to waterproof your boots. On one side only.
Title: Re: BlowBy
Post by: Wayne Orwig on August 17, 2015, 03:24:57 PM: It is normal. And no I would never do that.

(Pay no attention to those stains on the wall.......)

I assume it is windage and the simple displacement of the pistons, and less about blowby.
Title: Re: BlowBy
Post by: Vasco DG on August 17, 2015, 04:40:34 PM: Shared crank pin 90*-V twin.

Crankcase volume varies by about 2/3rds of swept volume between its maximum, when the crankpin is at 12 O'clock and its minimum when the crankpin is at 6 O'clock. Hence the pumping action. On something like a straight four or other multis with crank pins at 180* crankcase volume remains almost constant. On a boxer twin it varies by the full swept volume every revolution.

Pete
Title: Re: BlowBy
Post by: normzone on August 17, 2015, 04:50:22 PM: Gawd, it's sexy when you talk like that. Do you have a CD for sale or something ? I know some women that would respond very positively.
Title: Re: BlowBy
Post by: kevdog3019 on August 17, 2015, 06:41:02 PM: Quote from: normzone on August 17, 2015, 04:50:22 PM
Gawd, it's sexy when you talk like that. Do you have a CD for sale or something ? I know some women that would respond very positively.

I think you simply have a problem of displacement! :boozing:

Hey babe, lets go to the bedroom works for me, but she understands displacement and no explanation required. Oh... I'm also not married. :cool: :grin: