Author Topic: Valve cover breathers  (Read 7830 times)

Offline Team510Racing.com

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Valve cover breathers
« on: September 14, 2010, 05:40:45 pm »
On the valve covers there is breather caps... Do the rubber caps stay on or is it easier for a hose to be run of of them.. I saw a pic with what looked like hoses..


Thanks
Paul


Paul McCollum


Offline justfreaky

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Re: Valve cover breathers
« Reply #1 on: September 15, 2010, 08:37:21 pm »
Engine Spec Rules in #2 Carburetors states "Using rocker arm covers
with breather hoses in both covers is allowed."

Steve
Better to be hated for who you are, Than to be loved for who you are not.


Offline Team510Racing.com

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Re: Valve cover breathers
« Reply #2 on: September 15, 2010, 09:03:09 pm »
Thanks .. i was really wondering what size hose is good to use?
Paul McCollum

Offline justfreaky

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Re: Valve cover breathers
« Reply #3 on: September 15, 2010, 09:30:00 pm »
What size is the opening for the breather cap?
My thinking is to weld nipples to the openings, attach hoses to the nipples, then "Y" the hoses together and put a breather cap on that.
Make sense?

Steve
Better to be hated for who you are, Than to be loved for who you are not.

Offline Team510Racing.com

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Re: Valve cover breathers
« Reply #4 on: September 16, 2010, 07:37:28 am »
Ya i will have to look into it...Good idea ..


Thanks
Paul McCollum


Offline justfreaky

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Re: Valve cover breathers
« Reply #5 on: September 28, 2010, 07:05:32 pm »
Paul,

Let us know what you decide to do. Add some pics to show off.  ;)

Steve
Better to be hated for who you are, Than to be loved for who you are not.


Offline bandostuff.com

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Re: Valve cover breathers
« Reply #6 on: September 29, 2010, 11:17:51 am »
The hose on the stock valve cover breather is 1/2".  Some connect a breather to the crankcase outlet under the carb.  I  bought a Bando with a 1/2" hose connected front and the rear valve covers.  Thought there might be something to this so I made a tank with 2 outlets mounting above engine level rear of the LR tire and connected hoses from both valve covers.  It was a lot of trouble and in the end I don't think it made a bit of difference.

If you do add a hose to the rear valve cover, add a baffle to keep oil from splashing directly into the hose.  You can drill and tap the side of  the valve cover and use a 1/4" NPT hose barb then weld in a baffle.  You could also use small screws to mount a baffle.
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