Hot Rod Forum : Hotrodders Bulletin Board - View Single Post - Edlebrock Valve Cover Breathers???
View Single Post
  #35 (permalink)  
Old 11-25-2012, 07:33 AM
lakeroadster's Avatar
lakeroadster lakeroadster is offline
Hot Rods are Built, not Bought

Last journal entry: Lakeroadster's '31 Model A Tudor
Last photo:
Join Date: Dec 2001
Location: High Plains - Rocky Mountains
Age: 56
Posts: 806
Wiki Edits: 0

Thanks: 64
Thanked 175 Times in 142 Posts
..... it was discovered in 1958 that the road draft tube was a major source, about half, of the hydrocarbons coming from the automobile. GM's Cadillac Division, which had built many tanks during WWII, recognized that installation of PCV on vehicles could bring the first major reduction in automotive hydrocarbon emissions.

Happy Reading...

Crankcase ventilation system - Wikipedia, the free encyclopedia
Reply With Quote