Supercharger...........of Course A Super Charger Will Produce Power Immediately. Where As A Turbo Is Turned By Exhaust Gases Only Responding Crisply When The Rpm's Are Up. The Common Rule Of Thumb Is. A V -8. Put A Blower On It. A V - 6 Or I-4 Turbo Charge It. As The Latter Two Motors Wind Up Quicker For The Investment Of A Turbocharger To Pay Off. Your Welcome. Don't Mention It.
Thank you...but most of us already knew that. You haven't driven a turbo V8 engine before huh? Yes...they have 'lag' but that is the fun part. Learn how to drive around the lag you can have one VERY fun ride! Why cant you put a blower on a 4 banger or 6? Instant power right? I know a guy the put an Eaton blower on a Jetta, looks like a factory installation but it doesn't have anywhere near the power that it should. He was very disappointed especially after pouring $3000 into it....and only gaining 35 HP....same guy rode in my old '74 Maverick that had a turbo 302. I had, what, $1200 tied up in everything? Horsepower easily doubled, maybe more, with the turbo and best of all it was adjustable. To each his own
That's strange.....I guess most of the outlaw guys in this area are just crazy for putting turbos on there 400+ cu. in. motors??
Ummmm.... :16suspect The turbine works off a simple equation that says mass flow of air times 1/2 of the [velocity squared + enthalpy (heat)+pressure] equals turbine work. The more air you can flow the more work will be done to the turbine, which means that more work is done on the compressor essentially spinning it up faster, but lots of heat and pressure also spins it up quick. A V8 works great for this. The old power stroke was 7.3L of air constantly flowing through the turbine and it would make 30 PSI of boost almost instantly at 1500 RPM. The lug curve starts at 800 RPM. The myth is that 4 cylinders and V6s rev up faster. This is only true because they're generally geared higher because they make less power. So, to get them to drive the same as a V8 you have to spin them faster. This means they're moving more air, which is good for a turbo. However a V8 that's twice the size spinning half as fast also moves the same amount of air. What it comes down to is properly sizing the system for what you want it to do. Changine the size of the housings and wheels will affect the velocity and pressure of the air, which will do more or less work on the turbine. The more fuel you burn the hotter it gets, which also does more work on the turbine, which is why they all "lag" just a little bit. All things being the same with the engine, I'd go with a turbo any day and embarrass any super charged car. I would say that most people would rather super charge a V8, because it's easier to slap on a roots blower in an afternoon than it is to weld up a bunch of pipes and oil tubes. A turbo car is also harder to drive, because you have to anticipate it. If you're just reacting, then you're already a step behind and the car is going to swap ends quick.
Since I'm anti-nitrous (you either love it or hate it) I'm going to throw in my $0.02. Nitrous adds some air to the cylinder, but not much. For work to be done on the piston, the energy that is in the fuel must be transfered to the air in the cylinder. Now if I am making 500 hp on the juice and on a turbo, then my BMEP (brake mean effective pressure) is the same for both engine assuming they're both spinning the same RPM etc, etc. Pressure is the result of heat added to air molecules exciting them so they start bumping into each other. If I have more air in my cylinder my molecules are already close together, so it takes less heat energy to get them to bump into each other than it does if there's less air into the cylinder. So, to get the same pressure from adding nitrous (essentially just extra oxygen with some nitrogen) as opposed to adding more air, I have to add a lot more heat. This high heat during combustion is why nitrous is always harder on parts and less predictable than a good blown engine. Nitrous generally tends to have a higher peak cylinder pressure to get the same mean pressure compared to the same blown engine. On the other hand nitrous is cheap and easy.
I've always been told/read that nitrous lowers cylinder temperatures..........and in my mind, I would think that turbos/superchargers would increase incoming air temperatures more, simply because they are compressing air and I "thought" that when you compressed air it caused it to heat up?? I can tell you one thing, nitrous will FREEZE the heck out of you if you get it on your skin....Major frostbite!!! Don't ask me how I know!!
IMO if you can get it to fit, have the space (meaning not taking an hour to change plugs) and streetable (meaning it not going to over heat!) then yeah turbo all the way. but i think supercharger or N20 is the fastest and easy way and far as install is conserned.
Nitrous is cold when it comes out of the bottle true. This is because it's turning from a liquid to a gas and expanding rapidly. Compressing air does increase the temp too. Comp out temps can be 200 F or more before the intercooler and 120ish after. Nitrous can be below freezing obviously. Those are relatively small temp changes compared to 1500 or 2000 F combustion temps. The super cold intake nitrous temps might be the only thing that saves the piston. Think of it like this. If you have two bottles and one is full of air at 0 psi and the other is full of air at 30 psi, which one do you have to heat more to get it up to 100 psi? Kind of the same thing.
