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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 07-07-2023, 08:13 AM   #127
M0nk3y
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Quote:
Originally Posted by VerusEric View Post
It's best to have the system pull a slight vacuum on the crankcase. We have found with turbo applications, that *sometimes* you can pull too much oil/vapor out of the crankcase and overwhelm the can. That is the only time we recommend VTA, but it is generally at over 400whp.

The oil is also coming from the rear port primarily (OEM PCV Valve location).
FWIW, I discovered my last track outing I was getting blowby on the CCV side, not PCV based on where the oil was ending up.

I was closed loop, PCV tied to compressor inlet, CCV tied to airbox (Harrop SC as well)

https://www.ft86club.com/forums/showthread.php?t=153529
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Old 07-08-2023, 07:40 AM   #128
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Originally Posted by M0nk3y View Post
FWIW, I discovered my last track outing I was getting blowby on the CCV side, not PCV based on where the oil was ending up.

I was closed loop, PCV tied to compressor inlet, CCV tied to airbox (Harrop SC as well)

https://www.ft86club.com/forums/showthread.php?t=153529
Can you send me an email with hose routing and information on your setup, and I'll see if everything seems correct? Eric@verus-engineering.com.

This would be the first supercharged car that we have seen where the AOS is overwhelmed by the amount of blow-by. I'd like to ensure everything is hooked up properly. There are some diagnostic steps we can take as well.

The built engines generally run a bit looser and this can cause some excess blow-by but again, we haven't seen this issue with a supercharger setup to date.
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