GTM Stage 2 Supercharger Preliminary Testing Results

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.

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.

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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.

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

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.

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Mr.Squeeze

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.

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

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.

theDreamer

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

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Mr.Squeeze

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

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Driven Motorsports Single Turbo 7675 T4 1.32 A/R 995WHP 780TQ

dixon cider

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?

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"Remember, when all else fails, don't forget to tongue punch the brown starfish"-dixon
Dixon Cider's Roadster Build

JB-370z

Put the pics on a hosted site or up load them on your forum account. Then paste the code. Boom, Done.

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ll Baker Tuning ll GTM ll Powerhouse Amuse ll HKS ll Up-Rev ll iForged ll AP Racing ll Pioneer ll SPL ll Bride ll Top Secret ll OS Giken ll
GTM Stage 2 Twin Turboed 370z (First in Texas, Thanks To Baker Tuning)

Jamaica

hahahah bastard...

Im exited to see what GTM is bringing to the table.

Nixlimited

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

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.

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Working my *ss off for a GTM Rotrex SC to go with my 2006 URD Rotrex SC 4x4 Tacoma.