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something in muscle cars and in carrera gt


Well-Known Member
May 30, 2005
1.ive noticed that on a lot of old american musle cars they got a big crome circle on top of the engine, like in this pic:

whats it for???

2.and also i was checking out pictures of the carrera gt and i saw this picture of the engine:

whats the big white things on top of the engine? what are they for?
and whats that big block on the top right side of the pic: whats it called and whats it for?

3. whats a manifold?

4. in theory, wouldnt it be best to have a triple-clutch gearbox thatll prepare the next gear and the gear youre currently in and the previous gear?
Wikipedia ang google are your friends.

Auto Air Filters
Older vehicles that use carburetors or throttle body fuel injection typically use a cylindrical air filter, usually a few inches high and approximately a foot in diameter. This is positioned above the carburetor or throttle body and secured with a metal lid. Replacing this lid with a chrome plated version is a common and simple modification among car enthusiasts. Modern fuel injected vehicles use a rectangular filter. This filter is usually placed inside a plastic box connected to the throttle with a large hose. Occasionally these are replaced with a conical filter and cold air intake which provides a heat shield to cool the intake air. This is believed to produce a slight increase in power and efficiency.

Manifold (automotive engineering)
From Wikipedia, the free encyclopedia.

Left side of a Ford Cologne V6 engine, clearly showing a (rusty) cast iron exhaust manifold - three exhaust ports into one pipe.In automotive engineering, an intake manifold or inlet manifold is a part of an engine that supplies the fuel/air mixture to the cylinders. An exhaust manifold or header collects the exhaust gases from multiple cylinders into one pipe.

Due to the suction effect of the downward movement of the pistons in a reciprocating piston engine, a partial vacuum (lower than atmospheric pressure) exists in the intake manifold. This manifold vacuum can be used as a source of automobile ancillary power to drive auxiliary systems: (ignition advance, power assisted brakes, cruise control, windscreen wipers, power windows, ventilation system valves, etc).

This vacuum can also be used to 'suck' any piston blow-by gases from the engine's crankcase. This is known as a closed crankcase ventilation or positive crankcase ventilation (PCV) system. This way the gases are burned with the fuel/air mixture.

The intake manifold is located between the carburetor and the cylinder head. On multi point injected engines, the intake manifold holds the fuel injectors.

Exhaust manifolds are generally and traditionally simple cast iron units which collect engine exhaust and deliver it to the exhaust pipe. However, when greater performance is required, this restrictive tube is often replaced with individual headers which are tuned for low restriction and improved performance. Headers have been widely available from aftermarket sources for decades, and some manufacturers have begun using them as original equipment. The Honda J30A2 engine does away with exhaust manifolds altogether, using an integral engine block passage to route gases directly to the catalytic converter.

I have no idea about the stuff on the carrera gt engine, seems to be some cover crap. No idea what exactly is beneath it.
isn't the thing on old muscle car a Carburetor(sp?)

and the long thing on the carrera GT at the tip is the Supercharger I believe
1 - The chrome thing is the air cleaner - it sits on top of the carburettor. The chrome just makes it nice and pretty.

2 - The big white things are part of the intake - the air enters from the grey pipe you see poking out of the side of them, it will then pass the air flow meter which will be in that white box. The air flow meter tells the motor how much air is entering it, the engine computer uses that (and other data) to determine how much fuel to inject.

Edit: As pdanev said below - the air filters will be in there too.

The big box behind the engine is the muffler

3 - Not sure how to best describe this - the manifold is the part of the intake / exhaust system that bolts to the motor (cylinder head) that takes the inflowing / outflowing gases and either directs those gases into each cylinder (for the intake), and collects the outflowing exhausts and funnels them into the exhaust system. (I'm sure someone can explain that better...)

In the V8 pic you posted the grey metal object with two curved surfaces on the side of the motor is the exhaust manifold. The intake manifold is the red metal object underneath the chrome air filter (the carby will be sitting in between the filter and the manifold)

Essentially the air will flow like this:
Air Cleaner > Carby > Intake Manifold > Through cylinder head > Past valves > Combustion Chamber > KABLAMMY!!! > Back into cylinder head & through exhaust ports > Exhaust Manifold > Exhaust > Posion a dolphin

4 - Errr so like an Audi DSG but one step further? I suppose that would be terrific, but it would be horribly complicated

Andy - the CGT is an N/A motor - it's not super- or turbo-charged

Someone with more knowledge might be able to explain things better, or correct anything I've got a little bit wrong...

At the head of the engine, the twin-flow manifold system supplies a separate flow of air to each of the cylinder banks. To do that, the manifold is equipped with two separate throttle tracts as well as separate air filters with Helmholtz resonators. The resulting vibration of the incoming air is one of the key ingredients in the characteristic sound of the new Carrera GT.

This is another evocative reminder of the car's genuine racing origins.
everyone hit the answers already

air filter - it sits on top of the carb
air intakes/filters/throttle body

also, the GT is NA, so there is no charger (super or turbo) on that V-10
thanx a ton guys!!! :thumbsup: :thumbsup:
man that carrera is one incredible piece of engineering.... :shock:

like jeremy once said: want one, want one badly....
A manifold is just basically the ducting system for whatever part.

Intake manifold takes the fuel/air mixture from the carb/injector to the engine. Exhuast manifold takes the exhaust from the engine to the catalitic converter/exhuast pipe.

Though it's really hard to believe that you don't know what an airfilter is. How old are you? :eek: