In-House GTM Stage 2 SC Install\Tune

Seb@SZ · 11-13-2011, 12:44 AM

Quote:

Originally Posted by sojirovskensi

I really appreciate your kind explanation!
I will take a look at it again. I remember seeing it but did not really pay attention to the torque.

No problem!

If anyone is on the fence about the GTM SCs they are fantastic high quality kits that deliver on every aspect of how a proper F.I. kit should be. Quality, performance, and reliability.

Z eliminator · 11-13-2011, 05:51 AM

Nice #'s, your only running 8.5 lbs of boost?
im hoping to run mine at 10 .
Thank you for posting a 7 AT, dyno

Z

GUTCH · 11-13-2011, 07:22 AM

So if the Stage I SC has more torque than the Stage II SC, does anyone care to have an educated guess as to which would be quicker from 0 to 62mph?

GUTCH · 11-13-2011, 10:05 AM

Quote:

Originally Posted by GUTCH

So if the Stage I SC has more torque than the Stage II SC, does anyone care to have an educated guess as to which would be quicker from 0 to 62mph?

So my question above kinda got swallowed up in that 0-60 Vs 0-62 explanation. Anyone care to take a stab at it?

Seb@SZ · 11-13-2011, 11:29 AM

Quote:

Originally Posted by Z eliminator

Nice #'s, your only running 8.5 lbs of boost?
im hoping to run mine at 10 .
Thank you for posting a 7 AT, dyno

Z

It runs anywhere from 7.5 to 8.5 psi on the average. It's impressive how responsive these engines are to small increases of boost. Good luck with your project.

JB-370z · 11-13-2011, 12:13 PM

Quote:

Originally Posted by Seb@SZ

It runs anywhere from 7.5 to 8.5 psi on the average. It's impressive how responsive these engines are to small increases of boost. Good luck with your project.

Im guessing its partially to the high compression ratio?

Seb@SZ · 11-13-2011, 02:05 PM

Higher compression can help get response up but the main reason for the responsiveness to boost is the engine design such as the heads (port size\flow), cams, VVEL.

KaienZ34 · 11-13-2011, 07:43 AM

Why 62?

GaleForce · 11-13-2011, 08:08 AM

Quote:

Originally Posted by KaienZ34

Why 62?

0-62 is the standard 0-60 test. All the articles in magazines and shows on TV just say 0-60 because it sounds better than 0-62.

Found this on the interwebs, http://en.wikipedia.org/wiki/0_to_60_mph

"The time it takes to accelerate from 0 to 60 mph (0 to 97 km/h or 0 to 27 m/s) is a commonly used performance measure for automotive acceleration in the United States and the United Kingdom. In the rest of the world 0 to 100 km/h (0 to 62 mph) is used. Present performance cars are capable of going from 0 to 60 mph in under 6 seconds, while exotic cars can do 0 to 60 mph in between 3 and 4 seconds, whereas motorcycles have been able to achieve these figures with sub-500cc engine for more than 20 years. The Bugatti Veyron Super Sport is currently the fastest production street legal car to reach 60 mph from a stop, reaching the speed in 2.46 seconds."

KaienZ34 · 11-13-2011, 08:12 AM

OOooooK...

Jamaica · 11-13-2011, 09:27 AM

I wonder if I can get over 400lbs or torque..

SPOHN · 11-13-2011, 09:31 AM

Quote:

Originally Posted by Jamaica@UAMotorsports

I wonder if I can get over 400lbs or torque..

That would be nice. Even 385 would be a blessing

Jamaica · 11-13-2011, 09:43 AM

Quote:

Originally Posted by SPOHN

That would be nice. Even 385 would be a blessing

Any ideas on how to get a larger torque number?

Mike@GTM · 11-14-2011, 03:08 PM

Quote:

Originally Posted by Jamaica@UAMotorsports

I wonder if I can get over 400lbs or torque..

Yes, it's possible. Here's a graph of the Stage 2 with a smaller diameter pulley making 400wtq. Notice that the pull ends at 6200rpm because we stopped the pull...we were making 14psi of boost which was more than we wanted to make. The stage 2 is a real powerhouse once you start spinning it up.

Normally, we ship the Stage 2 with a 92mm pulley that is good for 500whp on 93 octane gas. Kosstick wanted less power and got the 96mm pulley instead.

cdoxp800 · 11-14-2011, 03:47 PM

Quote:

Originally Posted by Mike@GTM

Yes, it's possible. Here's a graph of the Stage 2 with a smaller diameter pulley making 400wtq.

wow. Just what I want.

11-13-2011, 05:51 AM	#2 (permalink)
Z eliminator A True Z Fanatic Join Date: Jul 2009 Location: Ontario Canada Posts: 1,660 Drives: 370 Z 7AT Sports Rep Power: 20	Nice #'s, your only running 8.5 lbs of boost? im hoping to run mine at 10 . Thank you for posting a 7 AT, dyno Z __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015. Last edited by Z eliminator; 11-13-2011 at 05:53 AM.

11-13-2011, 02:05 PM	#7 (permalink)
Seb@SZ Enthusiast Member Join Date: Jan 2010 Location: Chatsworth Posts: 277 Drives: Zs Rep Power: 25	Higher compression can help get response up but the main reason for the responsiveness to boost is the engine design such as the heads (port size\flow), cams, VVEL. __________________ Z Car Specialists www.specialtyz.com Blog http://specialtyz.com/blog/ Last edited by Seb@SZ; 11-13-2011 at 02:47 PM.

11-13-2011, 07:43 AM	#8 (permalink)
KaienZ34 A True Z Fanatic Join Date: Oct 2009 Location: LA. not L.a. Posts: 21,652 Drives: Z34 Tour/Sport Rep Power: 178	Why 62? __________________ *"These Violent Delights Have Violent Ends"* http://www.the370z.com/members/kaienz34-albums-z34.html

11-13-2011, 08:12 AM	#10 (permalink)
KaienZ34 A True Z Fanatic Join Date: Oct 2009 Location: LA. not L.a. Posts: 21,652 Drives: Z34 Tour/Sport Rep Power: 178	OOooooK... __________________ *"These Violent Delights Have Violent Ends"* http://www.the370z.com/members/kaienz34-albums-z34.html

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11-13-2011, 07:22 AM	#3 (permalink)
GUTCH Base Member Join Date: Jun 2010 Location: Australia Posts: 138 Drives: 2011 Nissan 370Z Rep Power: 16	So if the Stage I SC has more torque than the Stage II SC, does anyone care to have an educated guess as to which would be quicker from 0 to 62mph?

11-13-2011, 09:27 AM	#11 (permalink)
Jamaica A True Z Fanatic Join Date: Mar 2010 Location: SoCal Posts: 15,362 Drives: Under boost Rep Power: 74	I wonder if I can get over 400lbs or torque..