Where can I get an Oil Puke Tank?

[HSSS427]

IBR8K4VETTS - All engines have blow by at some level since the rings don't make a perfect seal. FEs apparently can be on the high side particularly when run hard. That blow by pressure has to go somewhere. In the original cars, they mounted a tank on the firewall with a hose running from the rear breather port of the intake to the tank. If you look at some original 427 engine pics you'll see a black tank on the firewall. The air, and oil vapor created, went into the tank instead of spraying over the engine compartment and creating a fire hazard - and a mess. The tank then fed back in to the oil pan for vapor that condensed back in to liquid, and the air vented to a road draft tube that hung under the car. When someone realized this wasn't good stuff to vent into the atmosphere, the PCV system was invented and they sucked the vapor back in to the intake to be burned in the combustion process. Race cars still use a similar system today and it's often required to keep oil from blowing on to the track. I may not have all the details and physics right, but that's my understanding. Also, from an originality standpoint, it is what the "real" 427 SCs had installed.

However, to your point, if there's too much blow by, it could indicate the rings aren't sealing properly and are letting too much combustion pressure by and into the crankcase. That's the hard part for me - how to tell what's normal, and what level is abnormal?

[Ibr8k4vetts]

HSSS427,
Thank you for your response. I run a PVC system and could not understand why anyone would run something else!

[streetrod1927]

Cobra Restorers has an original type oil puke tank in their catalog, part # CP1206, page 36 @ $349.95 each...... ouch