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Oil in Catch Can

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Old Aug 19, 2016, 10:47 AM
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Oil in Catch Can

I'm running a 2.3 built motor E85 at around 35psi 700whp+ with the STM 3 port catch can and after 90 miles on the freeway with 3rd/4th gear pulls here and there I'm consistently getting around a quart in the can. It's done this ever since I got the motor. Anyone else getting lots of oil?

Last edited by veilside prius; Aug 19, 2016 at 10:58 AM.
Old Aug 20, 2016, 05:09 PM
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What are the 3 ports connected to? Is the can sealed or vented to a filter?
Old Aug 20, 2016, 05:13 PM
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Is this the transmission mounted one with 3 ports high on the can and one port is connected to the front of the engine block?


If so, that makes perfect sense. I'd suggest plugging the one to the block. That block port will push a lot of oil into it, especially with such a high mounting point on the can and the can mounted so low.
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Old Aug 22, 2016, 10:43 AM
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Originally Posted by JRally
Is this the transmission mounted one with 3 ports high on the can and one port is connected to the front of the engine block?


If so, that makes perfect sense. I'd suggest plugging the one to the block. That block port will push a lot of oil into it, especially with such a high mounting point on the can and the can mounted so low.
Yep that's the set up I have. Thx I'll look into blocking that port.
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