GTM Stage 2 Supercharger Preliminary Testing Results

theDreamer · 05-17-2011, 12:13 PM

Quote:

Originally Posted by Mr.Squeeze

It has more to do with the supercharger being maxed out ,and to much over lap. The stage 2 flows 11% more than the stage 1, if you compare the two dyno charts that Sam posted it adds up to that.

That is what I am saying, the efficiency range of the stage 1 is at its max. So trying to run a higher PSI or a lower PSI, on stage 2, is not a worthwhile test.

Mr.Squeeze · 05-17-2011, 12:22 PM

Quote:

Originally Posted by theDreamer

That is what I am saying, the efficiency range of the stage 1 is at its max. So trying to run a higher PSI or a lower PSI, on stage 2, is not a worthwhile test.

It can be done with the Stage 2 unit it would just need to have a bigger pulley to slow the unit down.

I do see you point now however, with both units using the same pulley now it doesnt make sense.

Alberto · 05-17-2011, 12:24 PM

Quote:

Originally Posted by theDreamer

Because stage 1 is within its efficiency range at 8PSI and stage 2 is at 10PSI, it is designed to show you how a stage 2 kit can go farther than a stage 1.
Which is also why Sam said the stage 2 does not need a smaller pulley as it did not show any increase in power, similar with the stage 1.

What part of "if possible" from my post above did you not understand?

I am looking into learning the 3.7's "potential" more and figured what you had posted above. But again a stage 2 @ 8psi would be a nice comparison.

theDreamer · 05-17-2011, 12:26 PM

Quote:

Originally Posted by Alberto

What part of "if possible" from my post above did you not understand?

Again, read the thread.
Not going to muddy up this thread.

Mr.Squeeze · 05-17-2011, 12:30 PM

Quote:

Originally Posted by Alberto

What part of "if possible" from my post above did you not understand?

I am looking into learning the 3.7's "potential" more and figured what you had posted above. But again a stage 2 @ 8psi would be a nice comparison.

I understand what your talking about Alberto Sam is the only one that can do that though.

dixon cider · 05-17-2011, 03:34 PM

Ugh! I stay off of the forums for 24 hours and I miss this thread. Andrew had to tell me about it. The "lower" power car Sam has is a G not a Z. He using a couple of cars for testing the Stage 2, mine being one of them. Went to GTM today. It's the home stretch for the S2!!!! Whew!! My patience was wearing thin (shut up Andrew!!), poor Sam for having to deal with me too. Sam thinks my car should be done within 2 weeks (again SHUT UP ANDREW!!!!

). I'm using my ipad, so I'm not sure I can post pics from here. Any ideas, anyone?

Nixlimited · 05-17-2011, 11:25 AM

Quote:

Originally Posted by Alberto

How about a stage 1 @ 10psi if possible or a Stage 2 at 8psi to compare apples to apples...the way you have this comparison laid out doesn't make sense.

I believe the issue with the STG 1 blower was that it couldn't get up that high reliably because it flows less and because of the VVEL overlap issue. That's why, as Sam has pointed out, the STG 1 blower on a 350Z made more HP.

dwntwnall4u · 05-17-2011, 06:44 PM

Quote:

Originally Posted by Alberto

How about a stage 1 @ 10psi if possible or a Stage 2 at 8psi to compare apples to apples...the way you have this comparison laid out doesn't make sense.

That would be nice to see. Most likely the stage 2 SC @ 8lbs. Will be very close to the stage 1.
Each stage kit shows about a 7% increase HP per pound of boost.

roplusbee · 05-17-2011, 10:05 AM

10 PSI is goog to go on the bottom end? Sounds like some folks are going to need to get some forged internals................namely me. Why did you do this to me GTM? I thought I was all set to go with my F/I build and then you spring this on me, lol.

NewYorkJon34 · 05-17-2011, 10:50 AM

I thought the motor can hold up to 9psi safely, since I have LTH's it might drop the psi but still am curious

esfourteen · 05-17-2011, 11:11 AM

Quote:

Originally Posted by NewYorkJon34

I thought the motor can hold up to 9psi safely, since I have LTH's it might drop the psi but still am curious

No one can give you a number of "maximum safe boost" because theres no way to really know how long the internals will last and peoples definition of "safe" varies. We know that 8psi seems ok to run for long term, 10psi shouldn't be much worse. Sam/GTM seem to plan on running 10psi here, so they feel its a safe enough level for the engine to last reasonably long with their tuning.

Z eliminator · 05-17-2011, 05:41 PM

Well you guys leave Sam alone so that he can finnish the SC for the 370z.
He needs to be left a lone so that he can finnish the kit.
That way I will get my SC and kick a GTR at the drag strip.
thanks

Z

XwChriswX · 05-17-2011, 05:48 PM

Quote:

Originally Posted by Z eliminator

Well you guys leave Sam alone so that he can finnish the SC for the 370z.
He needs to be left a lone so that he can finnish the kit.
That way I will get my SC and kick a GTR at the drag strip.
thanks

Z

Jamaica · 05-17-2011, 05:54 PM

Quote:

Originally Posted by Z eliminator

Well you guys leave Sam alone so that he can finnish the SC for the 370z.
He needs to be left a lone so that he can finnish the kit.
That way I will get my SC and kick a GTR at the drag strip.
thanks

Z

lol

if you beat a GTR it will be shock to us all. That would something worth seeing.

Z eliminator · 05-17-2011, 05:59 PM

Right now a stock 2010 gtr runs the 1/4 in 11.75. My N/A 7 AT goes 12.42 with 309 rwhp. bump it to 470 rwhp and my car is light 3372 lb with me in it.
I can not wait till I race one.
" soon to be a GTR's worst night mare in the 1.4 mile."
Ask Sam about my car .

05-17-2011, 03:34 PM	#6 (permalink)
dixon cider A True Z Fanatic Join Date: Oct 2010 Location: STL Posts: 6,034 Drives: ONE BAD AZZ VERT Rep Power: 31	Ugh! I stay off of the forums for 24 hours and I miss this thread. Andrew had to tell me about it. The "lower" power car Sam has is a G not a Z. He using a couple of cars for testing the Stage 2, mine being one of them. Went to GTM today. It's the home stretch for the S2!!!! Whew!! My patience was wearing thin (shut up Andrew!!), poor Sam for having to deal with me too. Sam thinks my car should be done within 2 weeks (again SHUT UP ANDREW!!!! ). I'm using my ipad, so I'm not sure I can post pics from here. Any ideas, anyone? __________________ GTM INVIDIA MRWorks (RIP) Snow Performance Giken KW Hotchkis SRP "Remember, when all else fails, don't forget to tongue punch the brown starfish"-dixon Dixon Cider's Roadster Build

05-17-2011, 10:05 AM	#9 (permalink)
roplusbee A True Z Fanatic Join Date: Dec 2009 Location: Killeen, TX Posts: 2,360 Drives: 2007 350Z NISMO Rep Power: 24	10 PSI is goog to go on the bottom end? Sounds like some folks are going to need to get some forged internals................namely me. Why did you do this to me GTM? I thought I was all set to go with my F/I build and then you spring this on me, lol. __________________ 2007 350Z NISMO #0618: Zerolift \| UPREV \| F.I. \| Greddy \| Competition Clutch \| Injector Dynamics \| Aeromotive \| Pioneer \| JL

05-17-2011, 05:41 PM	#12 (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	Well you guys leave Sam alone so that he can finnish the SC for the 370z. He needs to be left a lone so that he can finnish the kit. That way I will get my SC and kick a GTR at the drag strip. thanks Z __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

05-17-2011, 05:59 PM	#15 (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	Right now a stock 2010 gtr runs the 1/4 in 11.75. My N/A 7 AT goes 12.42 with 309 rwhp. bump it to 470 rwhp and my car is light 3372 lb with me in it. I can not wait till I race one. " soon to be a GTR's worst night mare in the 1.4 mile." Ask Sam about my car . __________________ 12.343 @114.14 . 4.5 stroker motor is now being built. Dec 1 2015.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
GTM Supercharger Stage 1 w/ F.I. LTH	theDreamer	Forced Induction	140	03-16-2013 04:50 PM
GTM Performance Engineering Stage 1 Turn key Supercharger kit In house Installation.	SAM@GTM	Forced Induction	311	09-07-2011 03:42 AM
GTM supercharger stage 1 videos	Fezzik	Forced Induction	23	05-10-2011 11:34 AM
GTM Performance Engineering Stage 1 Turn key Supercharger kit In house Install II.	SAM@GTM	Forced Induction	254	08-11-2010 10:59 AM

05-17-2011, 10:50 AM	#10 (permalink)
NewYorkJon34 A True Z Fanatic Join Date: Jun 2009 Location: Naples, Florida Posts: 3,041 Drives: 09 Fairlady Z Rep Power: 1066	I thought the motor can hold up to 9psi safely, since I have LTH's it might drop the psi but still am curious