That's for cars that have an aftermarket supercharger, that started out naturally aspirated and have PCV systems that can't handle boost.Not any specific issue that I’m aware of that is unique to the 2GR-FE, just to supercharged engines in general.
Meaning that Lotus has modified the breathing system that they get from Toyota?That's for cars that have an aftermarket supercharger, that started out naturally aspirated and have PCV systems that can't handle boost.
This car has a supercharger from the factory, so the crankcase breather system is designed for positive pressure.
Yes, they would have had to. That doesn't mean *all* the oil vapor is efficiently captured, but it's way better than it would have been on a standard 2GR-FE.Meaning that Lotus has modified the breathing system that they get from Toyota?
That's true of all factory forced induction vehicles. Emissions requirements on all modern motors force manufacturers to scavenge the oil vapor back into the intake tract so that it can go through the engine and be burned in the combustion process. Turbo and supercharged vehicles have more positive crankcase pressure, so they push more oil vapor into the breather lines.I have read that even performance focused factory supercharged cars often have enough oil blow by that the addition of a separator will collect a significant amount of oil.
Obviously the car will still run without one, and is designed to, but it seems this is a very straightforward way of keeping the intake tract, including the supercharger vanes, clean.
I don’t mind a bit of extra maintenance, it all that means is periodically emptying a catch can.
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