Noe. we still got 4 strokes... just slimey ones...

so the oil fumes get burned in the combustion chamber, instead of being vented to atmosphere
It's primitive emissions control equipment
PCV system on your car does the same thing

I doubt it, big singles pop, it's part of the charm
as to performance, I doubt it has much effect one way or the other, I've eliminated PCV systems on old cars in favor of breather caps (like on even older cars) and not seen any loss / gain in power or driveability I could detect

i bring this up as I get closer to the board tracker build. As this build is using our bike as the donor and would like to trim down everything.

trying to figure out how to run the breather to the air filter, maybe thru a makeshift manifold??? not sure how or IF that would create issues / vacuum blah blah

I read on here somewhere that it should stay the same length approx. as the original carb-to-air box coupler for "ideal performance/flow" etc ...

DesertRat wrote on 04/03/16 at 10:17:04:


you're confusing the airbox to carb with the breather hose.  2 different requirements.
you need this length of duct to make the carb work best.
breather hose can be any length, it's just to route bypass gasses to the intake and to keep dust bunnies outta the case.
all you need on your breather is a filter, if you route it to the intake duct, mission accomplished.

to a point, that's what I'd do.
you need to consider what happens when you get a "wet one"
In my case, it'll drip outta the air filter and not up the carb.

We've seen slides stick because of fingerprints.
Allowing a glob of snot from the vent tube can't be a good idea.