Nissan 370Z Forum

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-   -   GT Motorsports: 370Z Supercharger system development (http://www.the370z.com/forced-induction/8812-gt-motorsports-370z-supercharger-system-development.html)

shumby 03-01-2010 03:24 AM

Waiting with bated breath for the prtess release

Buddy Revell 03-01-2010 06:23 AM

:tup:In case people somehow miss the press release thread, lol:
http://www.the370z.com/forced-induct...s-release.html

Phimosis 03-01-2010 04:19 PM

I'm in awe of the dyno numbers. That far exceeds my expectations for a s/c kit, especially with regards to low rpm performance of the centrifugal design charger.

The part that I am confused about is how do they get more power from a smaller displacment engine than the VR38DETT with less boost and using a supercharger vs turbo? At 420 rwhp that is roughly 500 hp at engine with 8psi boost, where the VR38DETT is 480 hp with 10.5 psi boost.

racerxj17 03-01-2010 04:21 PM

Quote:

Originally Posted by Phimosis (Post 424283)
I'm in awe of the dyno numbers. That far exceeds my expectations for a s/c kit, especially with regards to low rpm performance of the centrifugal design charger.

The part that I am confused about is how do they get more power from a smaller displacment engine than the VR38DETT with less boost and using a supercharger vs turbo? At 420 rwhp that is roughly 500 hp at engine with 8psi boost, where the VR38DETT is 480 hp with 10.5 psi boost.

post up the compression ratio of the two engines....

stormcrow 03-01-2010 07:37 PM

Quote:

Originally Posted by travisjb (Post 423300)
what's up with you coming on this board new as F and throwing crap at folks that have made great contributions since day 1... everyone is fair play if you have specific criticism, but the crap you're spewing is based on 1-2 data points and some extrapolations about how stillen's prior work applies to this kit... fix your attitude or beat it...

and if you're going to criticism the stillen kit, you do realize there's a stillen thread for that, right? why would you come to this thread to for that? hmmm

I saw your second post, but I just wanted to answer two questions that you posed.

Firstly, I may be new to this forum, but I am certainly not new to the modification arena or Nissan products. (it should also be obvious as to why I am new to the 370Z forum...if not, it is because I recently traded my GT-R for a 370Z. Had no real need to be on this forum until now)

To date I have:

a - modified a 2005 Infiniti G35 using Vortech's bolt on kit

b - modified a 2003 350Z with built shortblock and GReddy twins netting over 600rwhp

c - modified a 2006 Pathfinder with the Stillen SC kit

d - modified a 2009 GT-R using Cobb AP and custom tune netting 500awhp

e - modified a 2010 370Z Nismo...with ?? (remains to be seen)

Given my past experience, I am fully qualified to discuss past and current F/I kits, be it the Stillen or GTM. I am certainly not trying to be condescending towards any member of this forum, more so I am trying to educate others based on my experiences. Isn't that what these forums are all about? Sharing knowledge with one another so those of us who pioneered F/I on the VQ platform with our hard-earned money can pass on the hard lessons learned to those who are up-and-coming? If not, I will certainly "beat it" as you request.

Secondly, I have no desire to bring any of my opinions or facts of the past or present Stillen kit into their thread. I respect the vendor threads and have no desire to poison them. I admit I got sucked into posting more in this thread than I should have...but, in my own defense, it all started with me merely posting pictures of engine bays. My post was only meant to show the aesthetic sides of things as I saw them. Both were public pictures and not trade secrets. :)

jmlenz 03-01-2010 07:43 PM

Quote:

Originally Posted by Phimosis (Post 424283)
I'm in awe of the dyno numbers. That far exceeds my expectations for a s/c kit, especially with regards to low rpm performance of the centrifugal design charger.

The part that I am confused about is how do they get more power from a smaller displacment engine than the VR38DETT with less boost and using a supercharger vs turbo? At 420 rwhp that is roughly 500 hp at engine with 8psi boost, where the VR38DETT is 480 hp with 10.5 psi boost.

I believe the VR38 has been vastly under rated from the factory as well. Thought I read somewhere the true bhp, based on AWD dyno pulls is in the 550 range?

stormcrow 03-01-2010 07:50 PM

Quote:

Originally Posted by jmlenz (Post 424656)
I believe the VR38 has been vastly under rated from the factory as well. Thought I read somewhere the true bhp, based on AWD dyno pulls is in the 550 range?

Actually, the VR38DETT was rated properly from the factory. Depending upon what day/dyno you are on, you will net anywhere from 390 to 420awhp. Given the fact that drive-train loss is not a singlular calculable number, there is no real way to measure flywheel hp without an engine dyno. But, best guess numbers were around 480-490 crank horsepower.

The tune and restrictive stock exhaust is what caused the differences in power. Keep in mind that the GT-R has four cats. Two as "down-pipes" and two in the mid-pipe. Very restrictive. Timing in the factory tune was pansy, as well. Merely adding a mid-pipe sans cats and changing the timing would net 30-40awhp. Up the boost three psi and you were looking at nearly +80.

Gmendez 07-27-2010 01:20 PM

Sam, I have not seen anyone ask about the clutch/PP holding up to the various stages. In your opinion, is there any need to upgrade for any of the stages?

Also, what do you anticipate (from a hardware perspective) the changes to be from stage to stage?

Thanks!

NYBladeZ 07-27-2010 03:19 PM

way to bring back a dead thread. You're going to want to upgrade your clutch/flywheel however I'd wait, reports are coming in that the weak point is the master clutch cylinder and no one has released an aftermarket one just yet.

LateralG'z 07-27-2010 07:52 PM

See the latest one from Bee, he will hopefully post some photos of the damage

MMC Racing 11-24-2013 08:35 PM

Quote:

Originally Posted by SAM@GTM (Post 190241)
Yes..

One of our main intention with the supercharger kit is to achieve carb certification .

Sam

4 years later.... :icon14:

Rusty 11-24-2013 09:41 PM

Quote:

Originally Posted by MMC Racing (Post 2581465)
4 years later.... :icon14:

What do you want written on your tombstone? Carb Cert,Carb Cert, where art thou Carb Cert? :D

elperuano 11-24-2013 11:06 PM

:icon18::icon18::icon18:

Z eliminator 11-25-2013 01:41 PM

Spoke to Sam how the build is going on my 4.2 stroker with the stage 3 SC.
" its progeressing and will be finished soon "
The stage 4 tranney is already in the car,
Will be adding the meth spray as well
The drag strip will be open in April 2014.

Z

Tombonombona 12-09-2013 07:38 PM

This is random but here is my opinion on the product and staff…. I like the product I have the stage 2 SC on my z making 520 ish whp. I love the kit and the power it brings, but didn't like the final price of roughly $15500. The shop that did it says it was by far the most complicated system they have ever done on something. Could have had 2 or 3 "average" supercharger kits installed in the same time. Fit and finish is very good although one charge pipe came damaged… I've been hounding GTM about getting a new one and I might be getting it next month ( 8 MONTHS AFTER INSTALL ) Like cmon, guys, I know you have my money and all but that doesn't mean I don't exist anymore… Even my tuner had a hell of a time dealing with them.

MMC Racing 12-10-2013 07:46 AM

Glad that Sam didn't take deposits 4 years ago for a CARB certified kit.

MMC Racing 12-17-2013 08:58 PM

Since Sam is giving updates today, bump for supercharger kit CARB cert update.

Ill 12-17-2013 09:37 PM

You could always...you know...call him?

Called him today and got all my questions answered in 10 minutes.

MMC Racing 12-17-2013 09:46 PM

Quote:

Originally Posted by Ill (Post 2614591)
You could always...you know...call him?

Called him today and got all my questions answered in 10 minutes.

I'm trying to help the guy out. Instead of 100 people calling him, he could just answer once on the forum.

Chuck33079 12-17-2013 09:53 PM

Quote:

Originally Posted by MMC Racing (Post 2614606)
I'm trying to help the guy out. Instead of 100 people calling him, he could just answer once on the forum.

No, you're not. You've done nothing but bitch about a GTM CARB certified kit for your entire time here. Guess what? It's probably not going to happen. It's obviously not a priority for GTM. Rather than beat your head against the wall hoping for something that's not going to happen, why not either go with the one CARB certified kit on the market, stick with bolt ons or buy a car that has the power you want from the factory?

MMC Racing 12-17-2013 09:54 PM

Quote:

Originally Posted by Chuck33079 (Post 2614614)
No, you're not. You've done nothing but bitch about a GTM CARB certified kit for your entire time here. Guess what? It's probably not going to happen. It's obviously not a priority for GTM. Rather than beat your head against the wall hoping for something that's not going to happen, why not either go with the one CARB certified kit on the market, stick with bolt ons or buy a car that has the power you want from the factory?

Thanks for the feedback.

Chuck33079 12-17-2013 09:57 PM

Quote:

Originally Posted by MMC Racing (Post 2614615)
Thanks for the feedback.

Maybe this time you'll get over it? It's been years.

MMC Racing 12-17-2013 09:59 PM

Quote:

Originally Posted by Chuck33079 (Post 2614616)
Maybe this time you'll get over it? It's been years.

I thanked you for the feedback, I didn't say I cared.

It has been 4 years, but I have eternal hope and optimism.

Chuck33079 12-17-2013 10:02 PM

Quote:

Originally Posted by MMC Racing (Post 2614618)
I thanked you for the feedback, I didn't say I cared.

It has been 4 years, but I have eternal hope and optimism.

It's not hope and optimism, its being an ***. Your entire post history is bitching about GTMs kit not being certified. We get it. You don't like GTM.

MMC Racing 12-17-2013 10:04 PM

Quote:

Originally Posted by Chuck33079 (Post 2614620)
It's not hope and optimism, its being an ***. Your entire post history is bitching about GTMs kit not being certified. We get it. You don't like GTM.

You couldn't be more wrong. I still want to buy their finished kit. I have no reason to hate GTM. It is just car parts.

Chuck33079 12-17-2013 10:10 PM

Quote:

Originally Posted by MMC Racing (Post 2614622)
You couldn't be more wrong. I still want to buy their finished kit. I have no reason to hate GTM. It is just car parts.

Nothing's stopping you from buying a CARB certified supercharger. You're just not getting one from GTM no matter how much you bitch and moan. Go buy a Stillen kit if CARB is that important. It actually exists, so they've got that leg up on a CARB certified GTM kit. :rofl2:

MMC Racing 12-17-2013 10:17 PM

Quote:

Originally Posted by Chuck33079 (Post 2614627)
Nothing's stopping you from buying a CARB certified supercharger. You're just not getting one from GTM no matter how much you bitch and moan. Go buy a Stillen kit if CARB is that important. It actually exists, so they've got that leg up on a CARB certified GTM kit. :rofl2:

It is not like GTM never had plans to release a CARB certified kit and I keep nagging them that they should. Sam has marketed the kit "coming soon" for years now. Why it bothers you that someone might want an update is beyond me. What is your stake in this? I want to be their customer.

Chuck33079 12-17-2013 10:21 PM

Quote:

Originally Posted by MMC Racing (Post 2614640)
It is not like GTM never had plans to release a CARB certified kit and I keep nagging them that they should. Sam has marketed the kit "coming soon" for years now. Why it bothers you that someone might want an update is beyond me. What is your stake in this? I want to be their customer.

Right, and after years of "coming soon" a reasonable person would assume the project is dead. Have you ever called GTM and asked Sam? If they think you'll buy something, they'll take the call. It's after the sale they stop answering. :rofl2:

Ill 12-17-2013 11:04 PM

Quote:

Originally Posted by MMC Racing (Post 2614606)
I'm trying to help the guy out. Instead of 100 people calling him, he could just answer once on the forum.


I feel like bugging him and making him read the same thing over and over would be more detrimental to the development when compared to a single call.

Call me crazy

MMC Racing 12-17-2013 11:49 PM

Quote:

Originally Posted by Ill (Post 2614699)
I feel like bugging him and making him read the same thing over and over would be more detrimental to the development when compared to a single call.

Call me crazy

If they regularly updated their own threads, there would be no calls or status questioning posts. Now that seems the most efficient of all.

MMC Racing 12-19-2013 09:46 AM

Still advertising on their website that CARB approval is in progress..

GTM Motorsports*::*FORCED INDUCTION*::*GTM 370Z 500HP STG1 SUPERCHARGER KIT (TURN KEY)

Ill 12-19-2013 10:20 AM

Still beating a dead horse

Alkatraz 12-19-2013 08:22 PM

Quote:

Originally Posted by Ill (Post 2616837)
Still beating a dead horse

If you don't own a glue factory, what else is a dead horse good for?

DEpointfive0 12-19-2013 08:36 PM

Quote:

Originally Posted by Alkatraz (Post 2617723)
If you don't own a glue factory, what else is a dead horse good for?

To eat!!!

Alkatraz 12-19-2013 08:41 PM

1 Attachment(s)
Quote:

Originally Posted by DEpointfive0 (Post 2617747)
To eat!!!

Good point! Yum! Yum!

MMC Racing 02-02-2014 10:45 PM

Bump.. CARB cert progress?

Trips 02-02-2014 10:54 PM

When GTM is ready they can reopen this thread with an update.


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