obd1 b18b valve cover to obd2 head
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Joined: Jan 2003
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Re: obd1 b18b valve cover to obd2 head (povs9)
Crankcase vent is different. Here's how I think it goes...
OBD-1 B18 has a vapor/oil separator box on the back of the block, with the PCV valve attached. Then there's only one fitting (to intake) on the valve cover.
Your OBD-2 engine doesn't have that separator box on the block, so it needs both lines coming from valve cover.
OBD-1 B18 has a vapor/oil separator box on the back of the block, with the PCV valve attached. Then there's only one fitting (to intake) on the valve cover.
Your OBD-2 engine doesn't have that separator box on the block, so it needs both lines coming from valve cover.
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