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On3 turbo supposed to have an oring on compressor side?

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Old 08-19-2018, 01:42 PM
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Default On3 turbo supposed to have an oring on compressor side?
I have a 7875 on3 turbo. Bought new. I noticed it had shards of what I thought was rtv. So I took it apart and found this:



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Old 08-19-2018, 01:51 PM
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They're RTV'd like that from the factory.
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Old 08-19-2018, 02:24 PM
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Originally Posted by JoeNova
They're RTV'd like that from the factory.

should i I rtv it back or use an oring? I have a very thin o ring I can put in there and it seems to squish tight. Or I can machine an oring groove in my lathe. I don’t like the idea of rtv sealant. That seems chickenshit to me.
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Old 08-19-2018, 08:11 PM
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i thought the same thing when i opened mine up to reclock it. im not sure what to do now either?
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Old 08-19-2018, 10:25 PM
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I remember my Chinese turbo had an oring on the compressor, hell thing wasnt even a perfect circle when i took it apart but it sealed up just fine.
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Old 08-20-2018, 12:19 AM
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I haven’t decided what I’m going to do yet. I don’t like the idea of rtv.
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Old 08-20-2018, 01:31 AM
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Originally Posted by Kfxguy
I haven’t decided what I’m going to do yet. I don’t like the idea of rtv.
I scrapped off the old stuff, clocked the turbo, and then put a thin film of red rtv on mine; no boost leaks.
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Old 08-24-2018, 10:18 AM
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Originally Posted by Lethalwx69
I scrapped off the old stuff, clocked the turbo, and then put a thin film of red rtv on mine; no boost leaks.
that’s what I ended up doing. Didn’t like it. But o well.
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