V8 Crankcase venting for autocross or roadrace

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   I have been using my car for Autocross for a while now, and I think I need to do a better jop of venting the engine. 
Currently I have the PCV at the back of the intake manifold, and have tried various hose routing with an oil separator from the PCV with a breather at the oil fill at the front of the engine. Hasn't seemed to work all that well, so I'm in a 'start over' phase.

I just picked up a tunnel ram, so that has no provisions for PCV or oil fill, so I went ahead and put PCV breathers into my valve covers in preparation for that future change. I'll plumb the new crankcase venting from the valve covers from here on out.

I see that the T/A cars have done various things to keep crankcase pressure under control on the wet sump cars, however there are so many more options now for managing crankcase pressure now that werent available in the past I'm curious what others have done to manage this?
Thanks

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343sharpstick Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Mar/10/2010 Location: Wisconsin Status: Offline Points: 554	Post Options Post Reply Quote 343sharpstick Report Post Thanks(0) Quote Reply Topic: V8 Crankcase venting for autocross or roadrace Posted: Jun/25/2019 at 4:38pm
	I have been using my car for Autocross for a while now, and I think I need to do a better jop of venting the engine. Currently I have the PCV at the back of the intake manifold, and have tried various hose routing with an oil separator from the PCV with a breather at the oil fill at the front of the engine. Hasn't seemed to work all that well, so I'm in a 'start over' phase. I just picked up a tunnel ram, so that has no provisions for PCV or oil fill, so I went ahead and put PCV breathers into my valve covers in preparation for that future change. I'll plumb the new crankcase venting from the valve covers from here on out. I see that the T/A cars have done various things to keep crankcase pressure under control on the wet sump cars, however there are so many more options now for managing crankcase pressure now that werent available in the past I'm curious what others have done to manage this? Thanks

WesternRed Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799	Post Options Post Reply Quote WesternRed Report Post Thanks(0) Quote Reply Posted: Jun/25/2019 at 5:13pm
	I think our local rules require a 3 liter (3 quart) catch can for road race applications. Block the PCV off, you don't need it. Run a vacuum pump on the crankcase if you are keen. My thoughts is some fabricated valve covers with baffled AN fitting welded to the top and some rubber hose to your catch can wherever you decide to mount it.
	I've finally given up drinking for good...........now I only drink for evil.

Hurst390 Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Apr/20/2008 Location: secret Status: Offline Points: 5818	Post Options Post Reply Quote Hurst390 Report Post Thanks(0) Quote Reply Posted: Jun/26/2019 at 6:48am
	You have located those breathers right over a rocker arm. Make sure you have a good baffle.
	SC/Hurst Rambler 11.62 120 100% Street Legal

WesternRed Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799	Post Options Post Reply Quote WesternRed Report Post Thanks(0) Quote Reply Posted: Jun/26/2019 at 8:08pm
	Not AMC, but something like this would be the ticket:
	I've finally given up drinking for good...........now I only drink for evil.

WesternRed Members Profile Send Private Message Find Members Posts Add to Buddy List AMC Addicted Joined: Aug/03/2010 Location: Australia Status: Offline Points: 5799	Post Options Post Reply Quote WesternRed Report Post Thanks(0) Quote Reply Posted: Jun/26/2019 at 8:14pm
	PS: I just run a breather on the filler neck and wipe the oil off after each run or two: Well it's not normally this bad, that was an issue with the rocker cover gasket .
	I've finally given up drinking for good...........now I only drink for evil.