Quote:
Originally Posted by d1zguy2
Well that makes sense. I?ll have to see where the restrictor is so I can replace it when I install a closed catch can. Is it on the stock rubber boot or the stock hose?
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this is a picture of stock restrictor for sr20
https://zilvia.net/f/showpost.php?p=...0&postcount=19
however the size of restrictor depends on the flow rate of the pcv system, suction from the intake manifold and size of orifice of pcv valve.
SO if you've modified the intake, the engine, the pcv valve, anything between the intake manifold vacuum signal, the intake port, the pcv system, then the size of the restrictor will need to be adjusted to return the crankcase resting pressure to the correct range of 1-3" Hg,
Anything over 3" Hg can damage the oil pump and ruin the engine seals (engine rebuild)
so err on the large side if in doubt