GTM STG 2 SC, when will it be available?

RCZ

Since your thread was answered and this thread is now going somewhere now, its probably a good idea to let it run its course and stay relevant don't you think?

So yes.

NewYorkJon34

Ya, no need for bashing anymore guys. It really gets in the way of those seeking results/hp & tq numbers. I wonder if this stg.2 kit will get close to 500hp with the VVEL tuning. Should this kit be safe to run on the stock block, or will the engine need to be built to support said power?

Staples

It'll be fine in terms of reliability on the stock block. Torque is thing that breaks ****.

__________________
'08 Infiniti G37s - Forced Induction Fed

fstrnldr

You will probably be capable of making enough power to need to build the block with the stage 2. The thing with a supercharger that you have to remember is that it takes horse power to make horse power. The supercharger is not "free" energy like a turbo. Meaning to achieve 500 whp the supercharger actually has to make more at the crank to overcome the parasitic loss caused by the supercharger itself. That means 500 whp (depending on the exact chargers efficiency) could equal enough horse power needed out of the motor to require an engine build.

NewYorkJon34

Do others believe that over 400 TQ is possible with the stg.2 kit?

G37sHKS

it SHOULD be over 400 TQ.. more like 430 and up..

a Stage one can do 350 tq with stock VVEL and stock exhaust

so imagine what stage 2 can do with GTM VVEL controller and after market exhaust..

i have feelings that GTM will make exhaust manifold recommended for SC either long tube or short i dont care.. but I do have feelings!!

Z eliminator

When get it installed up here I will post the #'s. its going to be a few monrths.
But hopefully i will have the traction conrol unit installed before the SC.
As for the 7 AT. Im sure that the i will be the first one to really break one witht the stage 2. I have the GTM Torque Converter installed last week. Can not say how well it will launch my car as the is too much snow up here now. For some reason the car has a deeper tone to it and the shifts feel stronger.
Coming soon will be the VB.
The VVEL would be nice too have to try on my N/A full bolt on setups, but realistically i feel that's it will be along time till we see it. (its a major project to put it into production).
Z

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12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

G37sHKS

Hey Z, I was just wondering if ur looking for stg 2 SC then why you just didnt go TTed ur car and have the power than stg 2 will offer?

any experience with TT?

RCZ

Not to stir the pot or anything of the sort, but it may be a tidbit of info that can answer your question. Last time I looked into it, the SC unit Stillen uses flows more CFM than the GTM stage 2 unit. Considering the stillen kit doesnt need an engine build, I think its safe to say you guys wont either. Again please for gods sake don't take this comment out of context.

shaun66

Haha ^^ Thanks for the info.

Nismo370

Watup slimmm I see u inhere lol

Nismo370

I doubt you will need an engine build...remember the SC doesn't have that big rush of power the TT kit has so its not gonna be beating the crap outta the internals...it should be fine..

wishihadnav

Rotrex units are HIghly efficient..i believe the most efficient units available..stage 1 GTM SC kit has flow rate of .55 Kg/s and stage 2 will have .63 Kg/s...it is indeed a larger unit.

NewYorkJon34

I hope the stg.2 will be more efficient than the stg.1 when it comes to the addition of long tube headers, whether that be from Fast Intentions or GTM.

Mike@GTM

Did someone mention CFM in a forced induction thread? That is one of the most misleading measurements you could use when talking about forced induction. If you were discussing carburetors on a naturally aspirated hot rod, then CFM is appropriate because we can all assume you are talking about atmospheric air density. However, since we're discussing compressed air, CFM is useless for comparing performance unless you specify air temperature and pressure (assuming you know what to do with that information).

What you need to be comparing is mass flow rate in either kg/s or lbs/min. That takes things like compressor efficiency, pressure ratio, etc. into account. As far as I can tell, Vortech does not publish their mass flow rate for their superchargers, whereas Rotrex does.

However, Vortech does rate their superchargers on horsepower. Since horsepower is a function of air and fuel combustion (among many other variables), we can calculate the maximum mass air flow rate of their supercharger using a old rule of thumb that'll get you pretty close. For every 1lb/min of air flow, you get about 10hp.

On Vortech's website, they say that their V-3 Si Trim blower pumps 775hp worth of air. Therefore, that should be roughly 77.5lbs/min of airflow (give or take).

The Rotrex C38-91 flows .63kg/s of air. 2.2lbs/kg yields 1.4lbs/s. 60 seconds / minute yields 84lbs/min. Which is about 840hp worth of air, which is way more air than the Vortech.

Now, just because these blowers are capable of flowing a buttload of air, doesn't mean you are going to see that power on a dyno graph. Another intelligent individual already mentioned one reason, and that is the supercharger consumes power to flow that air. The other reason you won't see that much power is VVEL has so much overlap at high rpm (where the blower is pushing the most air), that a significant portion of that air is blowing right through the engine.

So, at the end of the day, our stage 2 supercharger combined with our VVEL tuning solution will make a lot of power. So much so, you'll want our traction control system too.