Quote:
Originally Posted by GTO_Gregory
I think the better catch cans use metal baffles, or a steel mesh for long life.
I doubt the catch cans reduce any crank case pressure as you are not creating additional vacuum.
I ran a GZMotorsports Sportsman Vacuum pump on my LS2-402 and there is a noticeable difference. With a vacuum in the crank case the engine revved must faster and easier. The system has its own vented catch can and twenty laps at Texas World Speedway with 0W-30 oil filled up the catch can.
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Would you typically only do this for bigger power/cam? I wonder if I’d be going overboard on preventive measures if I don’t plan to power add. I’ve heard horror stories about catch cans getting gunked up and blown seals