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    Results 1 to 8 of 8
    1. #1
      Join Date
      Sep 2016
      Location
      Bakersfield, CA
      Posts
      603
      Country Flag: United States

      Crankcase evac system, mufflers?

      So I'm looking at buying this kit:

      https://www.summitracing.com/parts/a...4145/overview/

      I need it bad, and looking at vacuum pump kits, that's gonna be way in my future.

      I notice it says not to run with mufflers. I have dual Flowmaster 40 series. I don't want to run with no muffler totally, do I need to go with like a Pypes Raco Pro or similar for the absolute least amount of back pressure?
      http://www.TheFOAT.com/92GTA
      1969 Pontiac Firebird
      w/535ci IAII aluminum block, Dailey dry sump, Holley EFI (full road race build). Primer black w/black interior.
      1992 Pontiac Trans Am GTA w/SLP Performance Package. Dark Jade Grey Metallic, grey leather, T-Tops.

    2. #2
      Join Date
      Jan 2008
      Posts
      67
      Country Flag: United States
      Are you trying to stop oil from blowing past your seals or trying to make more HP? If you are just looking to stop the oil leaks you may want to look at an electric vac pump they cheap and work very well here is a link to an install http://grannys.tripod.com/evac.html There is a guy I work with that has one on his T-type (10.50 car) and he swears by it.

    3. #3
      Join Date
      Sep 2016
      Location
      Bakersfield, CA
      Posts
      603
      Country Flag: United States
      I have all forged internals and since I get oil drip out of my breathers when I go into the throttle even just a fair bit, a friend suggested this would help seal my rings better and prevent this. Said it worked wonders for him and was an old hot rodder trick. My rear main does leak a tiny bit too after some full throttle runs, and my dip stick comes out just a little. I also went up to a 195f thermostat at his suggestion as well.

      I'll take a read at the link you sent.
      http://www.TheFOAT.com/92GTA
      1969 Pontiac Firebird
      w/535ci IAII aluminum block, Dailey dry sump, Holley EFI (full road race build). Primer black w/black interior.
      1992 Pontiac Trans Am GTA w/SLP Performance Package. Dark Jade Grey Metallic, grey leather, T-Tops.

    4. #4
      Join Date
      Dec 2010
      Location
      Fredericksburg, VA.
      Posts
      3,155
      Country Flag: United States
      I used that kit back in the 70's when I was drag racing. That system will start working once the engine rpm gets above about 3,000 RPM. But I found it to be next to useless on the street. A properly designed PCV system will be more effective at oil control. I had small annoying oil leaks until I installed an adjustable PCV valve from ME Wagner.

      http://mewagner.com/
      Steve Hayes
      "Dust Off"
      68 Camaro

      Given sufficient initial acceleration, even pigs can fly!

    5. #5
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,758
      Country Flag: United States
      I just recently added a MightyMouse evac can setup to my car and it works fantastic. In fact, several of my friends have done the same since and all have had similar results. Here is the link to my thread detailing how it works and what to use. http://www.lateral-g.net/forums/showthread.php4?t=54712

      Dave at MightyMouse is very helpful in designing a setup specifically for your application.

      I have done 2 full track days so far with the new setup and the engine has not used a drop of oil nor blown any oil out of the breathers.
      Lance
      1985 Monte Carlo SS Street Car

    6. #6
      Join Date
      Sep 2016
      Location
      Bakersfield, CA
      Posts
      603
      Country Flag: United States
      Sounds awesome, I'll check it out.
      http://www.TheFOAT.com/92GTA
      1969 Pontiac Firebird
      w/535ci IAII aluminum block, Dailey dry sump, Holley EFI (full road race build). Primer black w/black interior.
      1992 Pontiac Trans Am GTA w/SLP Performance Package. Dark Jade Grey Metallic, grey leather, T-Tops.

    7. #7
      Join Date
      Aug 2012
      Location
      Peoria, AZ
      Posts
      1,758
      Country Flag: United States
      Friend of mine lost 2 quarts of oil on one track day with his 2011 Camaro, he put a Mighty Mouse can setup on it and the next track day didn't use a drop. Controlling crankcase ventilation on newer engines that spend a lot of time at WOT is crucial...
      Lance
      1985 Monte Carlo SS Street Car

    8. #8
      Join Date
      Sep 2010
      Location
      Beach Park IL
      Posts
      2,838
      Country Flag: United States
      Do what Lance says. I still don't think that it should work, but it does it's job perfectly.

      Donny

      Support your local hot rod shop!






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