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Re: [GMCnet] Onan Question [message #24192 is a reply to message #24185]

Fri, 10 October 2008 22:06

GMCWiperMan

Messages: 1248
Registered: December 2007

Karma:

Senior Member

Ooops! Pardon my Boo-Boo! Walt's right: the pistons move in opposite
directions. I don't know why I had it in my mind that it was a single
throw crank, making them move in the same direction. Took me a while to
find an illustration of the 2-throw crank to convince me too.

That makes the reason for the oil geyser even more acute. And that
tremendous pressure variation explains why I had to repair the oil pan
on my old 4KH -- it had cracked for several inches along one of the
creases in the bottom.

Ken Henderson
Americus, GA
www.gmcwipersetc.com
'76 X-Birchaven
'76 X-Palm Beach

Walt Taylor wrote:
> on 10/10/08 8:37 PM, Bruce Tara at bnetara@aceweb.com wrote:
>> Has anyone had experience with Blow By in the Onan? ...

> ...Since it's a two-cylinder, opposed engine, both pistons go out at the same
> time. Then, they turn around and come in at the same time, pumping the total
> displacement amount of air into the crankcase...

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[Message index]

		[GMCnet] Onan Question By: Bruce Tara on Fri, 10 October 2008 20:37
		Re: [GMCnet] Onan Question By: GMCWiperMan on Fri, 10 October 2008 20:46
		Re: [GMCnet] Onan Question By: Walt Taylor on Fri, 10 October 2008 21:06
		Re: [GMCnet] Onan Question By: GMCWiperMan on Fri, 10 October 2008 22:06
		Re: [GMCnet] Onan Question By: Walt Taylor on Fri, 10 October 2008 22:43
		Re: [GMCnet] Onan Question By: GMCWiperMan on Fri, 10 October 2008 23:38
		Re: [GMCnet] Onan Question By: Tin Gerbil on Sat, 11 October 2008 00:07
		Re: [GMCnet] Onan Question By: Bruce Tara on Fri, 10 October 2008 23:02
		Re: [GMCnet] Onan Question By: Bob de Kruyff on Sat, 11 October 2008 00:24
		Re: [GMCnet] Onan question By: David L Greenberg on Mon, 19 April 2010 05:19
		Re: [GMCnet] Onan question By: i.d.garza on Wed, 25 August 2010 17:10
		Re: [GMCnet] Onan Question By: Hardie Johnson on Wed, 25 August 2010 21:28

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