Supercharge or Turbocharge?
 

Guys if you were given a choice, which one would you go for SuperCharge or Turbocharge? :tiphat:

Turbo, purely on personal preference basis.

My understanding is the an SC is better gains over the entire power band and has in the past been favored for larger displacement engines like those on vettes stangs etc. Turbos give better peak power and can give some ridiculous gains. Typically seen on smaller displacement engines. Theres some reason for that but I can't recall I'm sure someone has some better info then me.

There is no clear answer. SC's are often used on larger engines for packaging reasons as well: on a V8, slap low PSI blower on top, and if you are running < 7 psi no intercooling, or A/W in some of todays cars. Parasitic loss is not felt as much to drive the blower.

Turbo being exhaust driven, has less negatives on a smaller engine (the already soft down low is no softer), and you manage power output through proper engineering (A/R sizing for the power band you want, proper intercooling and engine management).

For V engines, you are typically looking at two smaller snails with compressor piping then joining at and A/A IC, then the intake manifold: doable, but far more complicated then a top mount SC typically.

If you were designing a 10 PSI system, either can work well from an output perspective when sized correctly.

- b

Make a poll. I say turbo because you get the bov sound.

Yeah that's my reason for wanting a turbo over a SC, yes childish but I don't care.

http://www.the370z.com/attachment.ph...1&d=1317825381

Make sure your turbo is a bit bigger than this :driving:

turbo is king. period.

That's nothing, I have ones as biggest volkswagons outside my office. I wish I could take a picture of the turbines we make(against policy), they power oil drilling platforms in the middle of the ocean.

Depends on what you want....SC's for the 370z are just now starting to make the numbers the TT kits have been putting up for several years. For now, the TT's are faster.....but that could change as GTM and others further develope the SC kits beyond stage 2.

:icon18:
bov sound = sex

SC has the BOV sound....GTM STAGE 2

I've modded cars in the past with each. Personally, I thought the supercharger gave the most OEM feeling bump in HP. The turbo was a bit more fun at the peak of course, but required more tuning and wasn't as plug and pray.

For the Z if I were to choose, I think supercharger.

ive owned and played with turbo and sc cars in the past. i like the sound of turbo's better and ease of tuning. not a fan of the whine of superchargers but this is just personal taste. :)

Supercharger for me. They seem safer on the engine.

+1

I found myself hating the new shelby gt500 bc of the loud whine it makes. Don't get me wrong, the car itself looks gorgeous.

Honestly, it really doesn't matter all that much, because on this motor you are choosing between a belt driven turbine or two exhaust gas driven turbines, and both set ups are capable of a reasonably broad powerband and considerable top end.

What I want to see is a roots or twinscrew blower for this car. Then there's a real debate to be had...

Either would be a great addition to the car, I went supercharger for the sound and linear power.

Safety has nothing to do with the technology choice for forced induction.

Safety is 100% about correct engine management. You can grenade a NA engine with poor engine management :)

- b

Thank you for your opinion but it still seems like the safer route to me.

There's really no reason to think that.

I suppose you could make the case that there are fewer parts that could fail on a SC set up as compared to a twin turbo (for one thing, only one turbine to worry about), but there really is no reason to presume greater safety.

Centrifugal blowers do tend to make power a bit later in the rev range than a properly set up twin turbo (although the torque curve looked pretty flat for this motor on that set-up), but under high load approaching redline, both are capable of destroying a motor in short order if the tune is bad or if the internals cannot tolerate the extra power.

Its not an opinion...its fact. Do the research and understand what I am referring to. Many good books out there. I read Corky Bell's books quite some time ago. Some of the A/R math is a bit deep and not necessarily what everyone needs but you get the idea. I have tuned several aftermarket cars using aftermarket computers, and the fundamentals are really the same: air, fuel, timing.

How the air is compressed is irrelevant. What is crucial is correct engine management when it comes to safety (i.e. making sure the engine does not grenade)

When you say something like 'it seems like the safer route', you are not giving me the impression you have an informed opinion here on the technology and issues at hand. Some of us try to offer some guidance to get a better understanding of the entire system and make a more informed choice for yourself.

Let me give you an example (real world). Assuming equal thermal efficiencies between 0 and 12 PSI, would you rather run a 8 PSI SC system that uses an AFPR, fuel pump and timing retard, or a 6 PSI Turbo system with larger injectors and a fully remapped or aftermarket ECU?

Now remove the words SC and Turbo from the above paragraph and re-read....that is really what is important. :D

In either case, my preference would be choice B.

- b

^^ I believe choice "A" is the "Civic with Mismatched Body Kit method" :D

TT vs SC
 

Looking at getting a 370 for track use. Which is the more reliable the Stillen SC or the GTM TT? Having ran turbos on the track previously I am concerned with heat biuld up.

Anyone know how much a stock engine can take without internal mods?

I don't know the answer to your question but thought I'd point out that GTM produce SC kits as well.

You should really search on this subject... If you are planning on tracking your car and worried about heat, forget FI.

For track, I recommend Stillen SC.

For DD and fun, go TT :tup:

Single turbo!!!!!!!!! :)

^^ that.

i would like to see an sts car get tracked. seems like the remote mount system could possibly help the massive heat increases seen by most FI cars over a prolonged period on the track

I just finished my GTM Stage 1.5 SC and it is extremely quiet and makes a ton of power while looking stock and you can barely hear it.

Both of you should take a ride in my car it would change your mind.:tup:

^He's correct. The GTM SC is very quiet at idle and low rev. The whine at WOT is a sound that any FI fan can appreciate. Both SC and TT are great options, but the SC is probably a better value based on cost and labor as it equates to the power and fun factor you get for each dollar spent.

^^(the exception could possible be an sts turbo system which requires the least amt oof labor to install and has the lowest price of any FI system)