I have a friend who runs a custom bike shop and he insists my bike would perform better with a crankcase breather, but I rarely see anyone else running them.
"I have no existing problems with leaks or blowby."
There's a clue. By: 47Knuckle-Dragger on: 8-10-2006
Your twin cam already has a crank case breather leading from left side of cam cover, top line to oil tank is the crank case breather. If you have a service manual ther is a detailed oil flow and breathing discription at the beginning of chp 3 (engine). Hope this helps. By: 2wheel on: 10-16-2006