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Turbonetics 7875 oil restrictor?

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Old Jul 22, 2017 | 09:44 AM
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Default Turbonetics 7875 oil restrictor?

Can i run one on my7875? My drain doesnt have a lot of pitch to it and im leaking oil between the exhaust housing and center section under boost. Would like to try it before going to a scavenge setup. Im running the stock oil pump.
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Old Jul 22, 2017 | 11:07 AM
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Originally Posted by jchevy
Can i run one on my7875? My drain doesnt have a lot of pitch to it and im leaking oil between the exhaust housing and center section under boost. Would like to try it before going to a scavenge setup. Im running the stock oil pump.
That's not what an oil restrictor is for, need to figure out the real problem. And the problem may be, you need to use a pump.
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Old Jul 22, 2017 | 11:36 AM
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it should have one on it stock...
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Old Jul 22, 2017 | 12:04 PM
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Thanks, Im going to look at reworking my drain line.
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Old Jul 23, 2017 | 04:40 AM
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It depends what sort of oil pressure you are seeing, the size of line etc.

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.
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Old Jul 23, 2017 | 09:20 AM
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It is a BB turbo and after looking into it closer there is a screen and a restrictor in it.

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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Old Jul 24, 2017 | 11:02 AM
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Turbonetics does not recommend running a restrictor on their T7875 BB turbos.
Not saying you can't, they just don't recommend it.
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Old Jul 24, 2017 | 11:58 AM
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Hmmm I was told that they DO recommend running one. So I bought the one they sell that has the integrated filter in the fitting as well.
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Old Jul 24, 2017 | 01:49 PM
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Originally Posted by roastin240
Hmmm I was told that they DO recommend running one. So I bought the one they sell that has the integrated filter in the fitting as well.
I believe it to be subjective, I'm not trying to muddy the waters but to say all BB turbos need a restrictor isn't accurate is all I'm getting at.
The used T7875 I bought came the install directions and in bold letter suggested not using a oil feed restrictor.
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Old Jul 24, 2017 | 02:32 PM
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Originally Posted by roastin240
Hmmm I was told that they DO recommend running one. So I bought the one they sell that has the integrated filter in the fitting as well.

They probably told him not to fit his own restrictor, because the units already have one built in.
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