Quote:
Originally Posted by JSH
Blame Eaton, the manufacturer, but it always comes back to the specs GM ordered. Better engineering, design, and manf. costs more money.
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Supercharger design has nothing to do with it, nor do I really see this as a GM "design flaw".
News flash - all boosted motors have blowby. Some manufacturers, such as Honda, have designed a baffle system in the head that keeps most of it out of the intake, although it still ends up back in the sump and contaminates your oil. It's just something you have to live with, the more boost, the worse the problem becomes. Not sure how much piston ring design has to do with it, probably has some minor effect.
For engines without any baffle system, catch cans make a HUGE difference in keeping your oil (and intake) cleaner, longer. I've seen this first hand on several vehicles. It is a MUST DO mod if you plan to keep the car, and even for the sake of the poor guy who buys your car
Note the new M cars all run 19+ psi bone stock, no catch can, Manufacturers (for the most part) do not install catch cans because it's another maintenance and waste disposal liability