pcv mod... too much crankcase vacuum?

[Eddie]

Leaking oil? From where? eddie

> [Original Message] > From: roncriswell@... > To: Tengai Mark Van Horn > Cc: KLR650 list DSN_KLR650@yahoogroups.com> > Date: 3/10/2011 10:46:24 AM > Subject: Re: [DSN_KLR650] Re: PCV Mod... too much crankcase vacuum? > > A friend of mine is leaking oil quite a bit after he did the 685

conversion. I guess this might help him?

> > Criswell > On Mar 10, 2011, at 7:42 AM, Tengai Mark Van Horn wrote: > > > I haven't really followed this mod as I generally don't mess with the > > mechanicals of a stock system that's working OK. My Tengai is at 60K > > miles and loses no oil. > > I can see how this PCV thing can control oil consumption. However, > > has anyone actually measured the crankcase vacuum created by one of > > these valves? Without any sort of breather or control/relief valve, I > > would guess the vacuum is pretty strong, being a big one-banger with > > no opposing piston to help equalize pressure. I think too much > > vacuum would prevent oil from sufficiently making it to the rings, > > accelerating piston/cylinder wear. Also, an increased amount of > > blow-by and unburnt fuel would enter the crankcase, putting more > > strain on the oil additives. > > Anyone? > > > > Mark > > > > > > [Non-text portions of this message have been removed] > > > > ------------------------------------ > > List Sponsors - Dual Sport News: http://www.dualsportnews.com > Arrowhead Motorsports: http://www.arrowheadmotorsports.com > List FAQ courtesy of Chris Krok: http://www.bigcee.com/klr650faq.html > Member Map:

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