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    1. #1
      Join Date
      Nov 2006
      Location
      Washington, MO
      Posts
      2,363

      SBC Crankcase Ventilation - Catch Can?

      Is anyone running a ventilated catch can instead of redirecting into their carb?



      I have read that oil vapor reduce octane in the fuel.. lowering efficiency/mileage.. any truth or benefit to a catch can?


    2. #2
      Join Date
      Jun 2001
      Location
      Newbury Park, CA
      Posts
      5,837
      Country Flag: United States

    3. #3
      Join Date
      Apr 2008
      Location
      Newark, OH, / Concord, NC
      Posts
      497
      Quote Originally Posted by Tony_SS View Post
      Is anyone running a ventilated catch can instead of redirecting into their carb?

      I have read that oil vapor reduce octane in the fuel.. lowering efficiency/mileage.. any truth or benefit to a catch can?
      Another option is to plumb the valve covers to the header collectors with a crankcase evacuation system, run just the system and no breathers this will create vacuum in the crankcase and increase power, you can buy these systems from moroso and other sippliers. Your right, putting any kind of oil vapor into the intake tract will decrease power.

      Dale

      I looked these up on Jegs' web site to give you a idea

      Mr. Gasket 6002
      Evacuation System

      Item# 720-6002
      Ships Monday
      Only $41.99

      Moroso 25900
      Crankcase Ventilation System

      Item# 710-25900
      Ships Monday
      Only $55.99
      IF COMMON SENSE WAS COMMON EVERYBODY WOULD HAVE IT


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