705 big bore kit .... and is there a 737 coming?

[Spike55]

Blake: Two other ways to extract oil from the engine are either by suction or by pressure. Suction: Maybe look at the air filter. If it is getting clogged up, the additional vacuum may start pulling more oil up through the breather to the airbox. Pressure: Maybe the rings are a problem and the blow-by might be pressurizing the crankcase and pushing the oil out the breather to the airbox. In either case a high oil level will aid in the transfer of oil to the airbox. Don R100, A6F

--- In DSN_KLR650@yahoogroups.com, Blake Sobiloff wrote: > > My A13's been using a fair amount of oil recently, and I'd noticed > that oil was weeping past the inner case gasket, so I assumed that > that was where the oil was going. So, this morning I planned to > replace the gasket in preparation for spending Memorial Day weekend > riding forest roads up near Eureka, CA. > > While cleaning up the underside of the engine in preparation to drain > the oil I noticed that the clear plastic collection bottle from the > airbox was unusually dark. I pulled the plug and some oil came > dripping out. And dripping out. And dripping out. > > It appears that the full length of the drain tube was completely full > of oil and then some, as about 1/4 quart of oil eventually came out. > When I initially noticed I was losing oil I was having to replace > about 2 oz. every 100 miles. Most recently, however, I've used about > 7 oz. per 100 miles. > > Oddly enough, aside from the footpeg vibration that I've been coping > with for about 15K miles, the bike seems to be performing just fine. > This includes my regular 30 mile (each way) commutes on the highway, > where I maintain 5K to 6K RPM. I can't smell or see any smoke from > the exhaust, nor is there any significant darkening of the rear fender > aside from the normal light amount of carbon soot. Power is fine and > I'm still getting around 48 MPG, and the bike starts quickly and > easily, too. Used oil analysis hasn't detected elevated levels of > wear metals. > > So, any ideas what's going on? Maybe a cracked ring? > > I'm really bummed, as I was tremendously looking forward to getting > some off-road time and motorcycle camping over Memorial Day. Now, > however, I'm not sure I have the confidence in the bike to make the > trip. > -- > Blake Sobiloff > http://www.sobiloff.com/> > San Jose, CA (USA) > > > > [Non-text portions of this message have been removed] >