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Moisture is an inevitable by product of combustion. Ethanol added to fuel seems to make it worse. I don't know about the lemans but most breather setups route the rocker vents to a condenser box which in turn is routed to the air intake filter box so the crankcase gasses can get recycled through the cylinders. Older motors sometimes vented directly to atmosphere but usually had some sort of oil trap. Shouldn't be to hard to rig one up or perhaps add a condenser box from a later model. Keeping the oil temp above 100 c is paramount to help in vaporizing the water off. I have been using a fuel additive called K 100 from Napa auto and have noticed a great improvement in the amount of mayo on my griso. An oil thermometer is also useful to avoid cold running. Removing the breathers will only make matters worse by not letting the water vapor escape .
I think the hose in question is the vent for the breather box.My Daytona had a fancy alloy breather bottle, my first V11 a plastic drink bottle. Both did the trick if you're thinking of going the way Pete suggests.
So, a few questions for those in the know please...Does the engine need the rocker cover breathers, or could these be removed?Would it be better to re route the breather to atmosphere to it's original position under the gearbox? I ask this because I'm contemplating routing it to a catchment bottle behind the battery, but this would necessitate a rise in the breather pipe and create another U bend reservoir.
I took my V7 Sport out for a good 200 mile run yesterday, highway, city and quiet country roads. When I got home the crud from the breather collected on the centre stand and rear wheel. I have the stock breather hose mounted to the stock lower bracket that connects to the transmission frame bolt. K & N single filter, all stock otherwise. I guess this is what can considered normal?Jim
Interesting and informative replies, thanks.I did forget to mention I've got a sump extension fitted and thus a lower oil level.When I removed the rocker covers a while back, to re torque the heads, I noticed mayo running out of the breather pipes.I think this is where most if not all the mayo is generated.My way ahead will be to remove these pipes and fit a catchment tank.Is there any necessity to have the breather box above the engine fitted, or could a pipe go straight from the large diameter breather connection above the engine direct to a catchment tank?
While you're in there clean out PCV, if old crimped original, I'd fit later circlip type.
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