pcv mod... spare airbox to play with
Posted: Tue Oct 11, 2011 8:57 pm
I just bought a spare airbox (a 2002) for my '99 klr, and I'm about to order the Mercedes Benz valve. Not sure I want to install it, but the extra box will let me examine the situation before dismantling or modifying anything.
I notice different riders' airboxes have small differences, vertical walls and bits of foam in the airbox's hole where the vent hose attaches. So I guess I can't be positive the '02 box is the same as the one on my '99, but close enough.
-JWF
--- In DSN_KLR650@yahoogroups.com, "eddie" wrote: > > 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: > http://groups.yahoo.com/group/DSN_KLR650/app/peoplemap/view/map > > Group Apps: > http://groups.yahoo.com/group/DSN_KLR650/grouplets/subscriptionsYahoo! > Groups Links > > > > > > >