Huff'n'puff'n out the head tube - both my '95 and '02 will do it if running in high grin mode

Simply acknowledge that huff & puff at high speeds has been seen multiple times by list members and even documented on the first Dragon run trip.  Having done so, simply carry a quart of your favorite oil along with you on those high speed trips to replace the very small amount lost to huff & puff when you are really cooking on the RPMS.

Sometimes you have to accept we are using a large thumper engine that displaces a canned drink's worth of volume every time it goes up and down.  It moves that much air around in the crank case ongoing, back & forth.  Throw in two quarts of oil flying everywhere in that crankcase and churn it constantly with a huge crank and a large counterbalancer that are spinning madly and frothing everything together all the time.

(hey, pick an oil with an anti-froth & anti-oxidation package in it -- Rotella comes to mind)

Suzuki wasn't kidding when it put the large stainless mesh oil separator into the head assembly upstream from the puke tube that goes into an oil reservoir that lives UNDER your air box -- an air box reservoir they ask you to remember to drain at every oil change.

And now we drop in hot cams and start running higher RPMS on purpose -- and what should we expect?   Expect more oil to be exiting the dump tube.   More oil in the airbox reservoir.  More oil lost on high dragon speed trips.

I HAD that problem, not anymore since the new rings and
exhaust valve rebuilt, not a drop is missing now at any speed
until now (600mi since rebuilt), but lets see how long this bliss
lasts, problem seems to be extremely common too.

In my case it's hard to tell exactly which one was at fault
(valves or rings) since both bad parts would have the same
result, BUT a guy in the savage forum from Spain, I've been
talking to, some engineer, swears it's "ring blow-by" the engine
produces at high RPMs by design regardless of ring conditions;
he says s it's the bore/stroke size and that the oil heats up, thins
and "climbs" the cylinder wall through the microscopic grooves at
constant high speeds and gets burned along with the gas in the
chamber.  

It is well known that most savage riders carry around their
quart of oil when on the road cause of this. Oh, and it is NOT
the oil vent, since my airbox was completely dry when I had
this problem.

Anyway, my 2cents
C'ya

Ive started it w/o the cap. It does make a racket & blow oil vapor out. I bet w/o that baffle under the cap it would just throw oil out. You can check your hose, hook onto the hose that comes out of the head & blow. Then pull the oil cap & see how it feels. No difference? Its plugged.

verslagen1 wrote on 08/13/09 at 22:56:43:


continue to ponder this - seems to me a far cooler running engine could be had if the huff in of air was fresh(filtered) air and puff out of hot air went away but a better oil mist recovery would be needed I think

verslagen1 wrote on 08/14/09 at 12:10:01:

Now that's some thin thin stuff there, no wonder...

In the middle at the bottom of the bike is a hose with a plug hanging down.

When you remove that plug, expect something terrible to come out of it, oil/gas/water mixture.

Every bike should get it's hose yanked every time you change the fluids.