ok so iam looking at my old intake manifold and i see there is a lil runner on the intake gasket running to a hole on the block right its under the middlebolt hole what is this for cuz i just put my ho manifold on and it runs bad now so could someone please tell me what its for and what i need to do to the ho manifold????? thanks
i need to know what i have to do the the flange and gasket to make it work and what does the hole do?????????????
its the PCV(positive crankcase ventilation I believe) hole. Whatever gases build up inside the block, are fed into the Intake manifold to be burned off. Definitely not a good idea to block it off...
that small hole only applys vacuum to air/oil seperator on the block....... as long as you run the long tube back into your intake system (the black hose that goes into the intake before the t/b) you'll be fine...... I've actualy ran the Air/Oil seperator vented to the air, and didnt have any problems.
SPD RCR Z -
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