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GJF GJF is offline
Slantnose from HELL
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Join Date: Dec 2004
Posts: 809
An aspirated engine has the breather line from the crankcase to the oil tank and from the oil tank to the air filter box. If this isnt rerouted then that creates a boost leak. Yes you have boost going to the crankcase but also it is being bleed off though the air filter. The only thing you needed to do is block off the breather line from the intake. The breather needs to go from the crankcase breather tube to the oil tank and from the tank to the air filter housing or intake housing where the filter connects. It is only to help pull a vacuum on the crankcase. What most people do is vent the crankcase to a filter canister and tie the oil tank breather line to it then vent to atmosphere. If it went from the intake to the crankcase and that's it . Then yes you were pressurizing the crankcase and that is not good. But that would not create piston ring blowby. It would try to Push oil out any location it could. Yes if that was the case it would also take spool up some time for the added area of the crankcase. As long as you severed the line from the intake you'll be fine.
87 911 Carrera platform
Twin Garrett's, Big Valve, Xtreme Cylinder Heads, JB Racing cylinders and machine work, custom JE pistons, GT2 EVO cams, GT3 oil pump, modified 3.2L intake, 80mm TB, custom Intercooler, equal length headers, DFI, KEP Stage 2 custom twin disc, G50 custom gear set, LSD, Tilton trans pump, Fluidyne cooler
Old 12-03-2011, 08:50 PM
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