Head vent ports, needed? |
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Head vent ports, needed? |
yarin |
Feb 6 2006, 10:07 AM
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#21
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'14-X'in FOOL Group: Members Posts: 988 Joined: 13-May 03 From: Guttenberg, NJ Member No.: 693 Region Association: North East States |
While pulling my carbs off I noticed that each head has an air vent. One was capped off, the other was open.
Where should these go and why are they needed? Will capping these contribute to oil leaks? Here is a pic I found: http://www.914world.com/bbs2/uploads/blog-1...-1131214564.jpg Thanks |
914efi |
Feb 8 2006, 02:57 PM
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#22
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Member Group: Members Posts: 140 Joined: 14-June 04 From: Westport,MA Member No.: 2,204 Region Association: None |
I was thinking that if you hooked the vent up to the intake manifold(s) in such a way as to draw a vacuum on the crankcase, this would help performance. The pistons would not need to displace as much air on the downstroke. It could also help with leaks as there would always be negative pressure inside the case(except at wot). The case needs to be sealed well enough that it does not mess up the carb/FI signal. As somebody mentioned, the 1.8s are set up this way.
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