lets all just get along and build a 4runner with a turbocharger AND supercharger nwgaaagaha *imhigh*

 

umm....................................

tc was right, and as much as I hate to start arguements, you are wrong, a "turbocharger" is just another version of a supercharger, that happens to be turned be a turbine that sits in the exhaust system, instead of a belt

The closest design of a supercharger that is widely known is the centrifugal superchargers that vortec is making, basically it is the "back-half" (or intake-half) of a "turbocharger" and instead of being driven by exhaust, it's driven by a belt

and as much as I hate to quote wikipedia:

http://en.wikipedia.org/wiki/Supercharger

it's in the very first paragraph

or,

http://en.wikipedia.org/wiki/Turbocharger

it's in the very first sentence

 

It's also in the howstuffworks link I posted...

 

yeah, i didn't see that part, I guess that he didn't either

 

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

this one was made by a different author...i guess they also have differing opinions like we do here...

 

Its incredibly stupid to argue the exact definitions of "turbocharger" and "supercharger" in this thread!

The debate should really be centered around, what it takes to put either system together and the advantages/disadvantages of either one......last time I checked definitions didn't add one damn horsepower to my engine.....I don't care if these guys call them "thingamabobs" and "doohickeys", I know what they mean!

Some of you guys can really ruin a good thread......you suck!

 

why do you think TOYOTA put Turbos in the 22R-TE and in the 3.4L and totally skipped the 3.0? they must have just focased on their diesel turbos then eh???

 

Turbo chargers also aren't effected by altitude as much and will still hit preset boost setting even at a mile high while the SC being dependant on the engine speed will be directly affected since the engine can't breathe in as much air it won't make the same boost at higher altitudes.

Turbochargers on a typical street car lose only about a half second from their sea level times while an SC car will lose about the full second the same way an NA car does.

Turbochargers aren't limited by engine speed which makes a big diff on highend horsepower.

 

What makes you say that?

Look at Dakar and just about any Rally Series. Almost ALL turbo charged. That requires WAY more durability then anything most of us need. They hit water and snow like crazy! No belts or tensioner to fail, better intercooling ability and less stress on motor because of no draw from the belt driven compressor.

That's why we regear. What rock crawler doesn't gear WAY down anyway? With dual cases you could run a rotary motor in a rock crawler and do fine. Hey, that would be kinda cool.... Turbo's also don't need any extra engineering to do that, they just need to be properly sized. Yes, a lot of honda kids go out and buy turbos that "support" 600hp and put them on their 1.8 litre motor and they don't see any boost until 6000rpm. However its really not that hard to find a turbo that will be sized correctly for your motor so that you receive benefit from your turbo at very low RPM's, under load - when you need it. The engineering has been done, it just requires a little research.

How many factory supercharged vehicles are there? How many factory turbo charged vehicles are there? That should tell you something...

Here's something else, Turbocharged motors will produce less stress on drive train. A lot of what kills drive train is shock load, i.e. when the slack is taken up in the drive train from dropping the clutch fast. With turbocharged motors the power 'builds' as the turbo spools which doesn't put as hard of an immediate load on the drive train. It's the same logic as why an ARB will help save your CV joints.

I suggest you try both for yourself and decide what you prefer..

 

Heres a link to my buddies 350hp custom turbo setup on the 3.4.
http://www.samsonfab.com/phpbb2/viewtopic.php?t=34
This should answer all your questions regarding stupidchargers vs turbochargers.

Heres a direct bolt on for tacoma turbos - remote mounted.
http://www.ststurbo.com/toyota_tacoma

 

Four cylinder cars are generally easier to turbo rather than supercharge, as they typically don't make all that much power to begin with and so can't spare very much to lose turning the blower. V6 and V8 engines can, so they're more frequently used for supercharged applications. Don't get me wrong, though, turbos on 6 and 8 (and greater) cylinder motors make huge power as well. My buddy's '86 Saleen made 425rwhp/450rwtq on a non-intercooled T44 at 8 psi.

Personally I've got a total hardon for turbos. I have a turbo Mustang and would love a turbo setup on the 4Runner. I much prefer turbo whistle and BOV hiss over blower whine, and the way turbos work just makes more sense and seems tougher to me. No, those are not scientific opinions, but that's how I feel.

 

i agree. Im sure we could all debate about who likes what and for different reasons, but ill tell you that on the 3.4, the difference between the turbo setup and the trd supercharger are huge; the turbo smokes the supercharger on all levels hands down.

 

hey turbo4runner, hows the megasquirt working on your truck? Im debating wether to go megasquirt, or go piggyback like the urd FTC or something similar to that for my 3.4 turbo project.

 

In a lot of sub 9 second racing classes turboes are handicapped over the Nitroused or SC'd cars since they make so much power to the weight of the car.

 

And a lot of that power is torque. Turbo cars just make gobs of torque.

Mmm torque

 

Megasquirt is great. Much better than any piggy back stuff. Don't get me wrong, it takes a bit more time, but I think the end result is worth it. I'm running it as a speed density system so I don't have a MAF too. I really like it.

 

Any forced induction method will flatten out your torque curve.

 

Rally cars arent sitting immersed intake deep in mud for elongated periods of time though, and thats what you really have to be worried about. Not to mention the vacume lines associated with turbochargers can also sustain damage, or become brittle and crack. Also, professional rally cars are deep stripped and refurbished after EVERY race.

Im not saying that you cant have a very successful turbo on an offroad vehicle. But you have to think about how many people are really going to have the technical knowledge to create a powerful, fast spooling, and durable turbo setup, compared to the majority of people who can still get power from a supercharger, not have to worry about the complicated stuff, and bolt it on themselves in their garage.

 

"Not to mention the vacume lines associated with turbochargers can also sustain damage, or become brittle and crack."

Dude, do you know how a turbocharged vehicle is built? I suggtest you look at some turbocharged engines and youll see that all the "the vacuum lines" are in the engine bay like a stock motor - why would they become brittle and crack?


"Im not saying that you cant have a very successful turbo on an offroad vehicle. But you have to think about how many people are really going to have the technical knowledge to create a powerful, fast spooling, and durable turbo setup, compared to the majority of people who can still get power from a supercharger, not have to worry about the complicated stuff, and bolt it on themselves in their garage."

Well if you want to just "bolt on the supercharger" and run, your going to have motor damage wether you like it or not eventually. Any time you have forced induction on a stock motor (more air), you have to compensate by adding more fuel which requires a piggyback computer or the like. And to get it to run right after doing that is not just your simple "bolt on" addition. It requires a lot of tuning, and requires cutting in to your vehicles wiring harness which most people are scared to do.

So to reply to your statement that a supercharger is easier to bolt on and go compared to a turbo system, id say that anyone who is desires to get more power out of their vehicle should know how both systems work and choose the system that outperforms the other one for power and efficency, because its power that your after, right? If it's the design and construction of a turbo system thats too complicated for home fabrication, you can buy a kit from STS Turbo Systems thats a few hundred dollars more than a blower for tacomas, slightly modify it for 4runners, as well a universal kit for any car that can be tweeked for individual needs.

 

To me it comes down to price. I bought the turbo on my car for $150...basically, the cheapest belt driven superchargers are $1000-2000. If I spent that much on a turbo, I would basically have as amazing, top of the line unit.