Venting a sprint car engine

Peyton · 1/20/19, 2:23 PM

If I run a vent hose from valley tray to oil tank do I need to run valve covers with crossover tubes?

Tony74 · 1/20/19, 4:29 PM

Wouldn't have too, but either the oil tank or engine needs to be vented to atmosphere.Alot of moisture and alky will be evaporating off the oil at temperature.

Rhody · 1/21/19, 12:26 PM

Out of three engines I have, the only one with a hose between the tank and valley is the one with the crossover breathers. The other 2 have a gooseneck vent and an internally vented oil tank.

ACP · 1/21/19, 3:29 PM

Peyton, is your oil tank internally vented?

Midget98 · 1/21/19, 4:48 PM

Some horsepower gains have been seen in higher vacuum pressures from next generation oil pumps and only the dry sump tank is vented as the engine itself is running in a vacuum pressure condition.

Radicle · 1/22/19, 1:05 AM

I use a breather with a pop off valve. Peterson Fluid Systtems sells these # 08-1440 (-12 AN ) Closed system that breaths when needed.

1/20/19, 2:23 PM	#1 Venting a sprint car engine
Peyton Member Join Date: Sep 2017 Posts: 5	If I run a vent hose from valley tray to oil tank do I need to run valve covers with crossover tubes?

1/20/19, 4:29 PM	#2
Tony74 Senior Member Join Date: Jul 2007 Posts: 945	Wouldn't have too, but either the oil tank or engine needs to be vented to atmosphere.Alot of moisture and alky will be evaporating off the oil at temperature.

1/21/19, 12:26 PM	#3 Re: Venting a sprint car engine
Rhody Member Race Count This Year: 9 Join Date: Mar 2011 Posts: 196	Out of three engines I have, the only one with a hose between the tank and valley is the one with the crossover breathers. The other 2 have a gooseneck vent and an internally vented oil tank.

1/21/19, 3:29 PM	#4 Re: Venting a sprint car engine
ACP Member Join Date: Jul 2009 Posts: 141	Peyton, is your oil tank internally vented?

1/22/19, 1:05 AM	#6
Radicle Member Join Date: Mar 2018 Posts: 105	I use a breather with a pop off valve. Peterson Fluid Systtems sells these # 08-1440 (-12 AN ) Closed system that breaths when needed.