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Old 02-21-2005, 05:10 PM   #1
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Question No Myth Just Fact SC VS. TC

Well once again the more I read in forums the more confused I grow. I don't want to start a heated debate! Unless your a pro and know that your stating fact not opinion I would appreciate it if you with held replying to this thread.

I have been weighing out the pros and cons of a supercgarger and and turbocharger much like the rest of you Focus Owners. Reallisticly as much as I would like tons of High-End I truly will never fully take advantage of it. What I truly want is as much Low-End torque as I can push out of my car. I had orginaly decided on a supercharger for this reason and this reason alone. But now I've read that a turbo charger can create just as much low end as a supercharger. So I'm offically completely confused becuause based on how each works It doesn't make sense to me that the TC would get the same low end because it's running of the exhaust. My other beleifs were: Boost is much easier to adjust with a Turbo; Turbo itself is more reliable/better longevity; Engine has better reliability/longeveity with a SC; Supercharger is an easier install and less complex than a Turbo; Overall for the daily driver/Do-It-Yourselfer a SC is a better choice but for the strip their's no other choice but a TURBO.

THE BASIC DIFFERENCES
The key difference between a turbocharger and a supercharger is its power supply. Something has to supply the power to run the air compressor. In a supercharger, there is a belt that connects directly to the engine. It gets its power the same way that the water pump or alternator does. A turbocharger, on the other hand, gets its power from the exhaust stream. The exhaust runs through a turbine, which in turn spins the compressor.

There are tradeoffs in both systems. In theory, a turbocharger is more efficient because it is using the "wasted" energy in the exhaust stream for its power source. On the other hand, a turbocharger causes some amount of back pressure in the exhaust system and tends to provide less boost until the engine is running at higher RPMs. Superchargers are easier to install but tend to be more expensive.


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Old 02-21-2005, 05:22 PM   #2
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ok well im not "a pro" as you request, but i will post anyway. you said yourself how "heated" debates get over this issue, which shows that you know of threads that discuss the same topic you are bringing up. Then you pretty much summarize a bunch of things that have been said over and over again in other threads.

Now you stated you were confused, but you have not asked any type of question, or asked for any particular response to anything? What are you trying to ask? and before you answer that, i think you will find the answer using the SEARCH button! infact, i know you will. not to be a dick or anyting, but is this thread necessary?

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Old 02-21-2005, 05:28 PM   #3
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I'm sorry after all that typing I didn't make my question clear........I want to know first off if a Turbo can produce the same low-end that a supercharger can, and secound if the info I stated above is true and that I'm not basing my choice on myth/false info?
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Old 02-21-2005, 06:16 PM   #4
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See this is were I'm confused and where much of the heated debate lies aswell. I would appreciate it If you could explain this in a bit more detail because in my head it just doesn't make sense. Because of the fundamentals of each system and how they work it seems impossible that a comprable turbo could produce the same low-end as a Blower(SC). I'm not sure if you are taking into account that turbo's are potentianly limitless compared to superchargers. I'm talking about comprable systems since if I do get a turbo it wont be a humongous one, again I have to maintain a ceryain degree of reliability in my daily-driver.
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Old 02-21-2005, 06:29 PM   #5
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If you like you can go to the FAQ on the Focal Jet FI forum and see dynos for JRSC, Vortech, and Power Works SCs for comparison. I think there is also one for the new Focus Sport system floating around there too.
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Old 02-21-2005, 08:09 PM   #6
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This is my STG1 turbo kit on 93 Octane (blue) on an all stock ZX3 with NOTHING done but cam gears with 7 to 8psi

The (red) is a SVT Vortech with 10psi all stock with 93 Octane

This shows with all the hipe of SC having more TQ that it just isnt there , This is an intercooled Vortech to a non cooled turbo kit

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Old 02-21-2005, 08:17 PM   #7
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theirs allot of variables there tho......Did both cars have the same upgrades or lack their of? because if this is true I'm definatly going TURBO!!!!!
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Old 02-21-2005, 08:18 PM   #8
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I posted the upgrades they had

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Old 02-21-2005, 08:21 PM   #9
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Old 02-21-2005, 09:12 PM   #10
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It's the area under the curve that makes the difference. I can tell you that I see my 7# of boost very early in the rpm range and torque is what moves the 2700# of car. Turbo torque cqn get very addictive!
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