Turbonetics 7875 oil restrictor?
Most oil journal turbos need no restrictor, but as every engine is different there is no generic answer.
It's mostly BB turbos that must have a restrictor, but they are usually built in.
Most oil problems are as said, inadequate oil return although many do bandaid this with restrictors on the oil supply side..
Although if for some reason your engine did make unusually high oil pressure, that's a different scenario where a restrictor may help.
Although I seen recently Turbosmart have some new oil pressure regulator for turbo oil feed lines.
My leak ended up being the drain fitting itself leaking because of a missing gasket. I bought the turbo used and just assumed it was there.
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The used T7875 I bought came the install directions and in bold letter suggested not using a oil feed restrictor.





