Question about breather for intake?

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Dec 12, 2013 | 03:42 PM

#21

Foxster

Road Warrior

Joined: Apr 2010

Posts: 1,739

Likes: 10

From: Suffolk, England

Quote:

Originally Posted by DesertDyna

Correction. True

"In car engines: Blowby vapors that end up in an engine's crankcase contain moisture as well as combustion byproducts and unburned fuel vapors. PCV routes them back to be burned."

Thanks for that. Had me worried for a second.

Just to say a little more on why you want it all downhill from the breather ports on the heads...

In the stock setup, the feed into the intake creates a sucking action because of the low pressure in the carb/throttle body. Once you remove the pipes from this then this sucking is gone. This can lead to the pipes not clearing properly and they fill with the cappuccino-looking gunge. This means the head breathers ports are effectively blocked.

The way to avoid that and to keep the flow going is to have the pipes downhill.