Turbo vs Supercharger

Ya I figured the intake side just goes to an intercooler across the grill. But your exhaust must fish under and back up. Or is there enough room to go under the front?

 

Here you go.

Cross over and down pipe tube.








Not showing the header though. That is my secrect

 

Very nicely said. I for one have owned and drevin turbo cars and i have drevin s/c cars but never owned. But coming from what ive seen, heard and experiance. Id go with s/c cause i like to feel the power as soon as you step on the peddle. Plus the whining noise sounds better to me than the spool of the turbos. I also hate the maintenance that come with the turbos setups.

 

What maintenance?

 

Originally Posted by chris4x4
Its a blockage in the exhaust system. Its not "Free h.p.". A turbo DOES have a parasitic drag on the engine. Install a Turbo on a engine but instead of connecting the intake, run the stock intake. Do the same with a blower. The two will be very similar in the amount of h.p. lost, via parasitic drag. Also, Turbos creat boost with a centrifugal type blower. They dont move alot of air by volume, thus they need a higher psi to fill the combustion chamber with a desiered charge. Most SC's are a Positive displacement type blower. I.e., an Eaton M62 moves 62 cubic inches of air per rotation. They move MUCH more air thus they can run less boost. Why do you think Top fuel cars use a SC instead of Turbos? I have found that running a much larger blower than whats recomended, but running less boost, yeilds the same power, and a cooler intake charge air temp. Makeing tuneing much more easy. With a Turbo, not only is the air heated via higher psi, but also, as the turbine is driven by the exhaust, the intake turbine absorbs this heat, and transferes it to the intake air.

Wrong. Your speculation due to observation is incorrect. Besided that, some of those top fuel drag cars lose up to 500 hp due to the positive dispacement blower. Yes that is high and may even seem a bit ridiculous, but it is true none the less.

Let take a much smaller example. My 4.0 liter 06 tacoma with a Turbo vs the same a TRD S/C. With my ~8 psi of boost my truck made 396 whp, and 444 WTQ. His made 315 whp and 330 wtq. Why was there such a difference if the parasitic drag is the same???

Also, this thing about not completely connecting the turbo into the system is nonsense. You might as well say to hold the impeller shaft so that it cannot spin and see how much restriction is caused....

You cannot equally gauge the way either "works" to determine the parasitic loss, if they are not both connected into the system the way that hey are intended, to operated properly. Seriously now.

 

how much boost can you get out of a TRD supercharger 4.0L?

 

Without modifying the TRD s/c for the 1gr, you can get just about 10 psi. That being with the the URD or APR snout pulley, and the NST crank s/c pulley. If you send the snout in to APR, they can machine it to fit the 2.7" pulley. Add that to the NST pulley and you boost will be a little more.

You want more boost? Send the blower into Steigmeister, to have the "snakebite" done to it. Then you will be about 16 psi (on stock engine with no porting).

You want more than that? Just get the URD pulley and add a turbo to the mix. Front or rear. O_O

 

To make the best decision here, you need to understand how each one functions, figure out what you really want, and apply the one that will most likely suit your application.

S/C's have their place, so do turbos. The ones that bash turbos need to remember that their initial engineering purpose was to increase torque, HP gains are a by-product of that and sometimes the HP curve will shoot up faster but in the early days that was not the initial intent. If a S/C was totally elite to a turbo, than a Kenworth tractor trailer would be running one and not a turbo, hence the purpose of torque boost with a turbo.

Your engine and what you want and don't want dictates which to use. The smaller the engine and lower compression, the more lag you'll suffer from a turbo. Bottom end torque desires will point to the S/C. Midrange and high end desires the turbo will be better, depending on the numbers you're after. Diesels do exceptionally well with turbos because they're running high compression numbers and flow a lot of exhaust gas so they can spool a turbo much easier.

I'm more of a turbo fan obviously, but I respect the place of the S/C in the market, it has purpose.

Both are the same maintanence practically, don't resite myths and opinions.

Just wanted to help clear somethings up, there are a lot of people that resite things when they aren't in the know or haven't done the research, don't persuade someone to spend a lot of their hard earned money on something if you aren't a professional on the subject, out of respect, please.

To the OP, keep researching, you'll come to a decision, and you'll be happy in the end no matter what.

 

if only you could put both.........

 

If only our wallets would allow us to put both

To hell with that though, I'd like a staged turbo setup like the Diesel guys in the truck and tractor pull competitions, running 4 turbos

 

I'm more for torque

 

There is one guy who already has a twin setup. TRD s/c and rear mount turbo.

I just helped my friend remove his TRD s/c and we were thinking about installing it on my truck, just for the heck of it. TRD in conjunction with my front mount turbo kit.

 

You can....

Compound setups are awesome although a bit complex, but boy do they work...low end boost like an SC but balls on top like a super thumper!

Open your wallet! WIDER!!!!!

 

It's not wide enough!!!

 

Well said and well thought out post. I drive a turbo and I gotta tell you when I need to pull something I like the torque. The immediate horsepower guys are for those who like to go fast, quickly. Not me I'm to old for that anymore. But what your "using it for" really struck home for me. Thanks!!!

 

Now which one am I going to put in my Tacoma with the LS1....

In my case probably a turbo due to a lower cost, those gdamn SCs for the LS1 are BANK!! Like 6 or 7Gs bank, lol. I dont have that kind of cash laying around, I have more time and skill than money, I am thinking twins, because I am power hungry X10..and I dont ever want to be beat...

 

twin turbo LS1... hope you don't mind sitting and spinning at all your take offs lol, unless you weight down the back.

 

Tell that to Calloway with his twin turbocharged Vettes.

 

Well a Vette should handle more power than our trucks, a Vette was designed for that. It should be able to get more traction to the rear end, due to a better weight distribution (and possibly better suspension) than our trucks. I had a naturally aspirated LS1 WS6 before my Taco, so I can image the power a twin turbo LS1 puts out, and how little it would take to break those tires loose.

 

Oh, yes, my misunderstanding, you were talking about traction... I thought you were referencing the turbos spooling (spinning up).... that would be why you mentioned weight in the back.... I'm stupid and don't read all the way, disregard