So if you turn the engine off does the turbo still spin?

For a short period of time, yes. The turbo impeller/turbine
wheel maintain some rotational velocity once the exhaust gases stop flowing. Obviously, once internal friction forces take over, the rotational velocity of the impeller/turbine decreases to zero.

Yes, turbos do add backpressure which can be seen to limit power output, but my point was the turbo requires no mechanical work from the actual engine to spin and produce power. The turbo simply works off of waste exhaust gas, and not the engine itself.

SSSHHHHh!!! lets not talk about exploding.:icon17:

dont the engines need back pressure? Thats why I thought turbos could go bigger diameter exhausts cuz the turbo itself provides the needed back pressure but NA cars have it provided by the exhaust itself.

The energy required to spin a compressor(turbo or supercharger) only comes from one place. That is from the engine itself. Superchargers take the power directly from the crankshaft.
Turbo's get their power indirectly from the extra work the pistons have to do, to force the exhaust past the turbo impeller.

Its only work for the engine at lower rpm, once the turbo spools up beyond inertial forces then any power loss essentially dissapears.

Unfortunatly in the case of a supercharger the faster it spins, the more power it takes to drive the supercharger.

Turbo's don't spin themselves,even after spool up.

What did I start :wtf2:

LOL...LiquidZ had a logical explanation imo but my opinion isn't worth a whole lot lol...

Can't wait to see pics and #'s Kyle!!! I threw up a little earlier with the 90-120 days comment lol :roflpuke2: Looking forward to any new updates!

LOOOL I like what you did there, very smart.

You know I wasn't referring to the interial energy stored in the turbo due it being a rotating mass.

I was just saying, to get the turbine spinning, the pistons have to put extra effort to push the exhaust gasses through it. That extra effort would be "robbed" from the engine's total bhp. Where else would the energy come from?

Boost is not boost. Look into lbs per minute. You can have the same psi but the one that flows more air will make more power.

I disagree. Noticeable differences in power can be seen at the same boost due to the size, volumetric efficiency, trim, etc. of the specific turbo or centrifugal SC used.

Happy Friday all! It's teaser time!

Here's a pic of the PROTOTYPE installed system, we're working on the tuning, and it will be on the dyno as soon as the california monsoon leaves us..

http://i47.tinypic.com/6r4l8h.jpg

Here's a teaser video of the system as well: STILLEN VQ37 Supercharger Teaser

And here is the reason we weren't driving the G37 today: STILLEN Shop: Hailing

This is not the final kit, the tubes will be polished, etc etc.. but it's running, and we're finalizing everything quickly.



.

Very cool, Josh! Excited to see what kind of numbers it puts down and what kind of numbers I'll have to put down to pick one up. :)

<< Begins the Stillen Supercharger Slush Fund IMMEDIATELY!!

is the supercharger in the same location on the 370 or do we get to have it on the correct side as the manifold because we are more important than the g37's?

Looks like it will be on the same side for us. There is more available space on the driver's side to house the blower.

Josh: is that the finalized intake manifold design? I wonder if there are going to be clearance issues with the factory strut tower brace.

Same here. My install will be a DIY!

I'll stop by and you can do mine! :icon17:

Haha... I have a feeling you will buy yours first, so why don't you bring it on by and let me practice! :icon18:

must... hide... money... from.... wife!

Thanks for the pic and vid, Josh. And I read that we're gonna have a rainless weekend here in OC. Hope your tech guys start the tuning tomorrow, LOL!

:eek::eekdance::yum: simply amazing, truly a work of art, i cant wait to hear that thing scream. :happydance:

Is the intercooler connected? I don't see any water lines at the end of the new manifold.
This looks like an awesome package. Can't wait for performance data.

Good eye.. Not in the pic/video shown..

I personally don't have that answer.. I'll find out..

I love the simplicity of the piping. I think I can see the single intake filter peeking out from behind that Stillen grille. From there it's a pretty short, straight path from the SC to the intake manifold. Also, from the vid, it looks like it's getting tested on an auto. Will be interesting to see how well it will take the extra power, since we already know the 6 speed handles it pretty well.

Man I need to dig up a few more oil wells!

:tup:

That thing looks so awesome guys. Big thumbs up from me.

Can you guys confirm if the blower is a V-3?

I think they did confirm it a while back, don't quote me though

The intercooler is not connected just yet. Which is also why we have not released any information about boost and horsepower.

The intercooler is out being made right now and should be arriving any in about four or five days. Even though the intercooler is not hooked up we can still learn a lot about how the car's running. We're able to watch the belts, brackets, hoses and alignment on everything and make sure everything is happy. We're also able to begin working on our tuning a little bit and get us even closer so that when the intercooler does arrive we can wrap up the final touches.

Looks like an intersting set up. Can't wait to see the finished product. I hope the pressure side piping and manifold clears the strut bar on the and other components on the Z.

that has got to be one interesting intercooler core if it is a bar and plate with the in and out fittings on the same side. Must have welded separator bar down the middle of each layer and split the end tank. Unless it's a ghey tube style core.

LMAO this made me LOL really good... :icon17: good to wake up too

What about belt rattling? The Vortech kits for the 350Z were really noisy. Josh, can we have a video with the s/c idling?

This has been my one huge gripe with the SC kits. I don't mind a subtle SC whine, its actually kind of sexy but if it sounds like this then oh hell fcuking no...

^I think that S/C sound in the video sounded pretty sick, it almost sounds like a turbo, but different.

I'm not sure I'd say it sounds like a turbo...but I definitely don't like the sound in that video.

Yeah, s/c whine is one thing but belt rattling is something that you wouldn't like:

YouTube - vortech rattl*

I hope STILLEN kit will not suffer from the same issue.

[EDIT] I eventually watched the above posted video, the rattle is clearly audiable there as well and it sounds like a jet at idle - not everyones taste and not subtile for sure. STILLEN screw-type charger for 350Z was the exact opposite and OEM-like solution (except the hood cowl).