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Jeep Wrangler YJ
YJ General Discussion
4.2 blow by
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<blockquote data-quote="Gilaguy23" data-source="post: 435024" data-attributes="member: 19498"><p>Typically crank vents have the one hose into the air filter box to pull clean air. The Vac side is hooked up at the carb base or intake but needs a PCV or orface type system like the later 2.5 of 4.0 has otherwise if it was just a open 1/2 hose or something like that you'd have a massive amount of suction pulling on that line. As far as plain old blow goes I imagine you know what thats caused bythat being crank case pressure from shot rings,holed pistons to name a couple, stuff like that.</p></blockquote><p></p>
[QUOTE="Gilaguy23, post: 435024, member: 19498"] Typically crank vents have the one hose into the air filter box to pull clean air. The Vac side is hooked up at the carb base or intake but needs a PCV or orface type system like the later 2.5 of 4.0 has otherwise if it was just a open 1/2 hose or something like that you'd have a massive amount of suction pulling on that line. As far as plain old blow goes I imagine you know what thats caused bythat being crank case pressure from shot rings,holed pistons to name a couple, stuff like that. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
4.2 blow by
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