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Author Topic:   What does this do?
JAW
Dirt Full Roller

Total posts: 48
posted August 22, 2005 12:47 PM  
Some people are running a tube off the valve covers into there headers.
Is this a hp advantage?

nine finger
Dirt Forum Racer

Total posts: 76
posted August 22, 2005 01:43 PM  
it pulls a vaccum in the motor

chickenlittle
Dirt Full Roller

Total posts: 64
posted August 22, 2005 03:24 PM  
Yes it does give more HP. Creates negative pressure in the crankcase. Will help give better ring seal and takes pressure off the bottom of the pistons. Check out C&S carbs web site. They make a neat belt driven crankcase evac system that is good for about 25hp.

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