Turbonormalizing v. Turbocharging

So from what I understand, turbonormalizing is used to keep Manifold Pressure (MAP) constant.  Turbocharging adds to Manifold Pressure to a certain point.  I also understand than most "turbocharged" cars are actually, in fact, turbonormalized.

To sum this up, turbonormalizing helps a car maintain the horsepower it was designed to produce and turbocharging helps a car produce more horsepower.

So for you automobile guys, is this correct?




Edited by WGP guy2 - 15 July 2007 at 11:27pm

__sneaky__ wrote: well technically a turbo charger doesnt create any boost untill enough exhaust gases are flowing to "spool up" the turbo, so at idle or low RPM's the turbo doesnt create much of any boost pressure, while at very high rpm's where a lot of exhaust gases are flowing it creates a lot, so it doesnt deliver a constant spacific air charge so the manifold pressure can't remain constant as such.

Right, I meant when the turbocharger was creating boost pressure, if its turbonormalized, the waste gate dumps all pressure over what the "normal" MAP would be.

__sneaky__ wrote: in theory yes... but keep in mind, not all turbo's have a wastegate...

In which case the engine would be undoubtedly turbocharged, and not turbonormalized?

As said earlier though it takes that time for the gass to create the boost

AKA : Turbo Lag.

__sneaky__ wrote: also for anyone with a turbo charged car, here is a little tip... let your car idle for a little bit before shutting it down, so the turbo has time to cool down, those high RPMs create a lot of heat, and just shutting it down all of the sudden will deffinatly shorten your turbo's life span over time.

If you are really lazy, buy a turbo timer.

__sneaky__ wrote: karll wrote: __sneaky__ wrote: also for anyone with a turbo charged car, here is a little tip... let your car idle for a little bit before shutting it down, so the turbo has time to cool down, those high RPMs create a lot of heat, and just shutting it down all of the sudden will deffinatly shorten your turbo's life span over time. If you are really lazy, buy a turbo timer. true... my way is cheaper

Fair enough. What is it about a boosted (forgive me for using such a horrible term, but it's what my friends and I say) car that is so alluring? Is it the sound of the spooling turbo? The woosh of the blowoff valve? The instant where you actually reach maximum boost and really feel it kick in? Whatever it is, it definitely does it for me.

__sneaky__ wrote: I'm more of a supercharger guy myself, cant beat the look and feel of a nice muscle car with a Roots Supercharger 2 4barrel carbs under a mean tripple butterfly streetscoop, and listen to the whine of the rotors as you Rev that thing, and you feel the body of the car shimmy from all the torque... its a beautifull thing...

I can sympathize with you on that as well. The beauty of superchargers is the fact that you always have boost on hand (not that I have to tell you that.) Plus the whine of some of those things is downright scary.

WGP guy2 wrote: Well I think I have succeeded in making a thread about aviation, but disguising it as something else and have it pass.

Sure fooled me.

WGP guy2 wrote: karll wrote: WGP guy2 wrote: Well I think I have succeeded in making a thread about aviation, but disguising it as something else and have it pass. Sure fooled me. Turbonormalizing is used to keep the MAP in a plane the same from sea level to its service ceiling, of course it is also used in most modern turbocharged cars to keep the MAP the same.  From what I've heard the term "turbonormalized" is not used in the automobile world.

Now that I think about it, that makes a lot of sense.

And I'd like to think I know a fair amount about cars, and I have never heard the term turbonormalized.

I don't know much about turbos, but from what I understand, I like roots style superchargers the best. :D