http://auto.howstuffworks.com/question132.htm

the mazda millenia used it.

yes Millenia *... if you have supercharger problems with that car it is basically junk

Someone do it! Basically gives you a lot more top end pull, while still maintaining the bottom end torque.

It'* just a cam with a lot of overlap?

ultimately, that'* what I think. However, there may be more involved, and some other tweaking Mazda does to help increase that efficency.

Like Bonnememn said, if the */C fails, the engine is crap. That'* the major disadvantage to this engine, and I would say it is too dependant upon it, and I wouldn't like having such a major dependancy on a major component, like that. Just my opinion, however .


-justin

Basically the piston is in compression, and the SC is still pumping air into the cyl. So you get even more air/fuel into the cyl then a conventional SC car.

Basically a really LONG intake lobe, and slightly more fuel. SC'* are some of the most reliable parts of an L67, shouldn't an engine be dependant on all major components?

They should be but most people will never build them that way.

Are the M90s or M62s or whatever'* in the SC cars strong enough to take the added pressure of part of the compression cycle? You might want to do some research on the blowers used in Miller applications and find out if they have any special features. I would imagine they would run higher boost than what our SC cars do. What do you guys think? It'* a fairly uneducated guess, but the pressure of the already-present boost would be added to whatever psi the partial compression stroke is. This has got to create the equivalent of a fairly large amount of boost against the pistons, cylinder walls, supercharger internals, etc. Your cam would determine what pressures were made obviously, but add the psi of an 8.5:1 compression ratio (or whatever the SC cars are) and you've got whole different ballgame.

Of course I may just be talking out of my rear end. Correct me where I'm wrong.

M90'* can make a ton of PSI though.