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Vent pipe from cam cover to airbox necessary? - Engine/Ancilliaries - The Lotus Forums Jump to content
gtookey

Vent pipe from cam cover to airbox necessary?

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I have a separate catch tank on my S1 for crank ventilation. So is the vent pipe from the intake cam cover to the airbox needed? 

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Hi Peter,

the crankcase breather hose goes into the catch tank and the tank vents direct to atosmpher.  I left the vent pipe going into the airbox from the cam cover installed. I did a bit of googling about and found that it is beneficial to the health and performance of the engine to maintain some positive crankcase ventilation. 

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Is it a US spec thing to have a separate catch tank? I only have the pipe that goes into the airbox.

Pete

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Since I do not have an airbox (but K&N filters) my vent pipe ends in fresh air... 

I thought about installing a small catch tank, but since the tube remains dry there is no real need.

Wolfgang

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The crankcase breather hose from the block would also have originally gone to the air box for emission purpose. Previous owner many many moons ago installed the catch tank.

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