Nissan 370Z Forum

Nissan 370Z Forum (http://www.the370z.com/)
-   Forced Induction (http://www.the370z.com/forced-induction/)
-   -   GTM Performance Engineering 370Z SUPERCHARGER KIT PRESS RELEASE (http://www.the370z.com/forced-induction/15233-gtm-performance-engineering-370z-supercharger-kit-press-release.html)

DannyGT 09-03-2010 09:32 AM

Quote:

Originally Posted by RCZ (Post 706186)
direct port into the manifold.... How come you are using meth?

The AEM unit was given to me by a friend as a gift. So why not make use of it no?

Besides, maybe this will give us some new insight for others to either try it or stay away. Oh and I dont think i'll go meth, just water injection. I just want to have a cooler charge, I dont want to have to completely change the tune or rely on the meth for added tuning.

RCZ 09-03-2010 09:34 AM

Yeah, I for one Im eager to see what you can do with it. I was just asking to see if you were going to try and crank up the boost. There are no power gains from just adding WI alone...

Neo187H 09-03-2010 09:39 AM

Quote:

Originally Posted by RCZ (Post 706178)
Phi and MMC, I understand your point but what I'm saying is different. Power is made on flow. The car clearly has the ability to flow more than the stage 1 rotrex unit does. So that tells me that you could use a bigger unit that flows more which would make more power. A bigger unit would flow more and start getting choked up by the amount of flow of the actual motor, thats when you would see PSI start to rise.

So no, its not that people are obsessed with psi numbers, its that you could be making more power because the ENGINE is capable of flowing more than the SC does.

Has it been shown that the rotrex stage one unit can't flow more?

Or have they just not chosen to put a larger pulley on it and see? Sorry if this question has been answered previously, I don't think I have overlooked it in my reading through.

DannyGT 09-03-2010 09:42 AM

Well, usually just by significantly cooling the charge there is a 8-12whp gain from it without tuning.

kevin1985912 09-03-2010 12:37 PM

Quote:

Originally Posted by MMC Racing (Post 706095)
Exactly. People are obsessed with a boost number. Who cares about such things if the power is there.

No body is obsessed with boost number, i'm obsessed with whp number. Okay, you tell me this, why does people with the LTH not making as much power as people with stock cats. I personally don't give a damn about how much boost the engine is holding, but the point is which exhaust set up will make the most power with the SC kit.

RCZ 09-03-2010 01:13 PM

Quote:

Originally Posted by Neo187H (Post 706234)
Has it been shown that the rotrex stage one unit can't flow more?

Or have they just not chosen to put a larger pulley on it and see? Sorry if this question has been answered previously, I don't think I have overlooked it in my reading through.

As I understood it, and please correct me if I'm wrong, 8psi is the top of the range of the efficiency zone of that unit. Higher boost applications would require moving out to the Stg2 compressor...


Quote:

Originally Posted by DannyGT (Post 706238)
Well, usually just by significantly cooling the charge there is a 8-12whp gain from it without tuning.

Eh, the cooling effect helps keep the mix from igniting prematurely, but power gains are negligible. Lot of people say untuned "X" injection actually loses power because it inevitably takes the place of some fuel that would otherwise be burned... anyhow..it will work to keep your motor a little safer...

SAM@GTM 09-03-2010 01:53 PM

Quote:

Originally Posted by RCZ (Post 706533)
As I understood it, and please correct me if I'm wrong, 8psi is the top of the range of the efficiency zone of that unit. Higher boost applications would require moving out to the Stg2 compressor.

That is not correct, the same supercharger unit is making over 11 psi on our 350Z HR supercharger kit .

Sam



Chris@FsP 09-03-2010 02:28 PM

Quote:

Originally Posted by DannyGT (Post 706238)
Well, usually just by significantly cooling the charge there is a 8-12whp gain from it without tuning.

But you are also displacing air/fuel mixture with water vapor.

Neo187H 09-03-2010 02:28 PM

Quote:

Originally Posted by SAM@GTM (Post 706576)
That is not correct, the same supercharger unit is making over 11 psi on our 350Z HR supercharger kit .

Sam

Out of curiosity what is the upper effienceny range of the stage 1 unit on this car? 500 crank HP as listed on the front page? Wouldn't that be right around the 8 psi that is supplied with it? Obviously there are many factors involved in all of this so I don't expect a precise answer, just something general.

Also, dumb question but what kit is being installed on cars and sent out, stage 1 correct? Stage 0 has yet to be installed or sold for any cars?

G37Sam 09-03-2010 02:32 PM

Could be, but oustide its efficiency range though?

Zsteve 09-03-2010 04:33 PM

I just want to see some kits installed already and see how they are performing. Lets get it on!!!!!!!

Nismo374 09-04-2010 01:18 PM

Does anyone know if you will have enough space to have a engine oil cooler with this supercharger kit? As the intercooler and supercharger oil cooler seem to take up most of the room in front.

travisjb 09-04-2010 02:25 PM

that was answered somewhere in the first 10 pages pretty clearly... yes

DannyGT 09-04-2010 07:31 PM

Quote:

Originally Posted by travisjb (Post 707524)
that was answered somewhere in the first 10 pages pretty clearly... yes

Sorry I'm late with this...here is a quick preview of the parts laying on my lovely carpet, rofl.

It might take awhile to process it was just uploaded...

http://www.youtube.com/watch?v=FibNp-EnavQ

DannyGT 09-04-2010 08:31 PM

My god, I sound retarded...

Sorry, I'm filthy and pulling an all-nighter with a friend of mine trying to get as much done as possible. I just came in shot the video and posted it, no editing, nothing. Anyway - let me know if you want to see anything specific or have any other questions...

kevr6 09-04-2010 10:06 PM

GOOD JOB!
You need batteries for your smoke detector. ;)

dlmartin81 09-04-2010 10:40 PM

^ Haha....yeah..

DannyGT 09-04-2010 10:55 PM

negative! I was going to do a proper intro but didnt have time. Thats my parrot in the background. He does that when he calls out for someone in the next room to take him out of the cage. He also mimics cats and dogs to an exact science, LOL

christian370z 09-05-2010 01:07 AM

Nice video Danny, I don't blame you for sounding giddy because I would be doing the same thing! This is the stage 1 kit correct?

DannyGT 09-05-2010 01:40 AM

Stage 1 and the first stage 1 with meth/water injection too. (i think)

We're still up, 2.30am and counting, intake manifold is off and we're 70 out of 128 pages through! woot!

http://img683.imageshack.us/img683/2633/img6146w.jpg

CGMobile370Z 09-05-2010 08:08 AM

Quote:

Originally Posted by DannyGT (Post 707827)
My god, I sound retarded...

Sorry, I'm filthy and pulling an all-nighter with a friend of mine trying to get as much done as possible. I just came in shot the video and posted it, no editing, nothing. Anyway - let me know if you want to see anything specific or have any other questions...

Did the kit come with all the instructions in that 3 ring binder? That is really nice if it did. Are you running an engine oil cooler? If so I would like to see how and where you mount the inline thermostat and how you route the lines please.

Phimosis 09-05-2010 09:21 AM

Quote:

Originally Posted by RCZ (Post 706178)
Phi and MMC, I understand your point but what I'm saying is different. Power is made on flow. The car clearly has the ability to flow more than the stage 1 rotrex unit does. So that tells me that you could use a bigger unit that flows more which would make more power. A bigger unit would flow more and start getting choked up by the amount of flow of the actual motor, thats when you would see PSI start to rise.

So no, its not that people are obsessed with psi numbers, its that you could be making more power because the ENGINE is capable of flowing more than the SC does.

I agree with you 100%. I didn't comment directly on that aspect, but it's part of the same issue. So the converse is that with a smaller sc unit, if you increase flow by reducing restriction, the boost number goes down. Additionally, I'm not even saying using the smaller unit is bad. It allows for peak boost to be achieved at lower rpms and makes the powerband more useable.

Phimosis 09-05-2010 10:43 AM

Quote:

Originally Posted by Neo187H (Post 706234)
Has it been shown that the rotrex stage one unit can't flow more?

Or have they just not chosen to put a larger pulley on it and see? Sorry if this question has been answered previously, I don't think I have overlooked it in my reading through.

I would say the answer is yes, based on: http://www.power-enterprise.co.jp/ro...rotrex/C38.pdf

The unit is rated for 865 cfm of flow, compared to 1150 cfm rating for the Vortech unit used in the Stillen kit. That number is relative though, based on the pressure map. The pressure map in the above referenced .pdf file shows the efficiency range as a % efficiency. You can get it to make 11 psi of boost, but not very effieciently and the volume of air flow will be much lower than its max of 865 cfm. Or, you can go to the other end of the extreme and get 865 cfm of flow, but with no boost, which is also inneficient as a compressor. The "sweet spot", or peak effieciency, is where you are getting good boost and good cfm of flow. The rationale for using this smaller compressor is that you can gear it high and spin it very fast, so that it builds boost at a lower engine rpm, but then in the upper rev range, the boost doesn't keep building.... it just kinda plateaus. If you use a big compressor and spin it fast, you get too much boost at high rpm, potentially causing engine failure. If you use a big compressor and spin it slower so boost is ideal at redline, the boost level in the midrange will be much less than ideal and performance will suffer.

kevr6 09-05-2010 11:33 AM

Quote:

Originally Posted by DannyGT (Post 707917)
negative! I was going to do a proper intro but didnt have time. Thats my parrot in the background. He does that when he calls out for someone in the next room to take him out of the cage. He also mimics cats and dogs to an exact science, LOL

Funny.

I'm going to follow your progress. This looks like the best way to go for my needs!! :tup:

DannyGT 09-05-2010 01:14 PM

cool, I'll probably get a bit more detailed in my reports in my journey thread in members gallery.

DannyGT 09-05-2010 02:28 PM

Quote:

Originally Posted by CGMobile370Z (Post 708137)
Did the kit come with all the instructions in that 3 ring binder? That is really nice if it did. Are you running an engine oil cooler? If so I would like to see how and where you mount the inline thermostat and how you route the lines please.

I actually printed it out and put it in that binder. But the truth is, I have the laptop with me as well and I guess I could have saved tree's and not printed it out. But then again, its easier to flip pages without having to worry about getting oil all over the laptop, LOL.

Additionally, I have GTM's HD oil cooler but I'm not at that part yet where we relocate the cooler. More on that a bit later.

CGMobile370Z 09-05-2010 02:43 PM

Quote:

Originally Posted by DannyGT (Post 708527)
I actually printed it out and put it in that binder. But the truth is, I have the laptop with me as well and I guess I could have saved tree's and not printed it out. But then again, its easier to flip pages without having to worry about getting oil all over the laptop, LOL.

Additionally, I have GTM's HD oil cooler but I'm not at that part yet where we relocate the cooler. More on that a bit later.

I will probably printout the instructions at work and put them in a binder like you did, much easier than dealing with a laptop when you are all greasy.

rbosacco 09-06-2010 10:59 AM

did sam email you his intructions? they weren't in the box, i am still waiting on box 3 and 4 with the oil cooler and test pipes in it though. maybe its with them. at this point there is no hurry as the car is out of town now till the end of october.

Quote:

Originally Posted by CGMobile370Z (Post 708541)
I will probably printout the instructions at work and put them in a binder like you did, much easier than dealing with a laptop when you are all greasy.


danny out of curiosity what stage did you order and what model charger did you get?

DannyGT 09-06-2010 11:21 AM

He will give you a link to the instructions (pdf) and then you can follow them off a laptop or just print it out.

charger is a c38-81 I believe. I know on the unit itself it's engraved c38

RCZ 09-06-2010 10:09 PM

Quote:

Originally Posted by SAM@GTM (Post 706576)
That is not correct, the same supercharger unit is making over 11 psi on our 350Z HR supercharger kit .

Sam

Glad to see you are answering. Thanks for the info, but you said nothing about whether the stage 1 unit could flow enough to make use of a high flowing exhaust. I guess it's meant for the guys who want CARB certification since they can't run exhaust anyway, they might as well run a small compressor for the low end boost.

I can't wait to see what kinda of power DannyGT makes on it.

LiquidZ 09-07-2010 10:12 AM

Been moving and finally had a chance to catch up on this thread. Danny, this looks like a great kit. Can't wait to see more!

Zsteve 09-08-2010 09:54 PM

So GTM how many kits have to guys shipped out so far? Im really wanting to see some install stories.

JB-370z 09-08-2010 09:58 PM

Quote:

Originally Posted by Zsteve (Post 713438)
So GTM how many kits have to guys shipped out so far? Im really wanting to see some install stories.

Thought you were going with a stillen kit? :ughdance:

Zsteve 09-08-2010 10:00 PM

Quote:

Originally Posted by JB-370z (Post 713449)
Thought you were going with a stillen kit? :ughdance:

Not right now, Im leaning towards GTM but if they both work good and are about the same then its which ever I can get cheaper.

JB-370z 09-08-2010 10:18 PM

Let me tell ya guys, I drive with a current member on the forum that owns a GTM SC kit and this thing is a fucl<in rocket. The weird thing is this kit sounds like it has BOV's 2 or 3 times louder than the twin's for sure, no joke. Having Sam's support 100% of the way makes this SC option a no brainer. Plus your engine bay stays looking OEM and not like a 5.0 Mustang.

Zsteve 09-08-2010 10:19 PM

Quote:

Originally Posted by JB-370z (Post 713496)
Let me tell ya guys, I drive with a current member on the forum that owns a GTM SC kit and this thing is a fucl<in rocket. The weird thing is this kit sounds like it has BOV's 2 or 3 times louder than the twin's for sure, no joke. Having Sam's support 100% of the way makes this SC option a no brainer. Plus your engine bay stays looking OEM and not like a 5.0 Mustang.

cool

DannyGT 09-08-2010 11:23 PM

The fact is this guys, no one has come close to their claims (Stillen's)...period. Those that have, had more mods done and STILL fell short of the advertised claims. Maybe someone messed with the dyno, who knows. Let’s not even bring up RCZ’s car…Custom tuned by a super aggressive tuner amongst other things.

Anyway - those that have the GTM kit are running flawlessly. Shumby, with his fine example of already achieving the numbers of the low power numbered Stillen kits out there with ONLY 6psi, has the most important thing of all, drivability.

That’s what sets apart real tuners....They can [try to] make more HP than the GTM kit but so far the drivability aspect of their tunes is a ******* joke. When you look at both tuners its clear both pushed the kits to the limit, and no one will get those numbers. I sure don’t expect to get 460whp. GTM has a few dyno sheets showing power ranging from 420-460. But their advertised hp claim shows they except, with a safe tune, to be in the 410-430 range. I do know for a fact that I will be in the 410-430whp range, and even more so with water injection/custom tune. My goal even before I bought the SC was strictly to hit 420whp. I know I can hit this with no fancy tune.

I’ll tell you, it’s been a great experience doing this install, and I have to say that GTM is 95% perfect with their instructions. I will be making edit’s to the document so that anyone else tackling this, being it pro or not, can have that much more specificity.

shumby 09-08-2010 11:34 PM

^^^ what he said. Plus I (shumby) have over 7000 miles on it now with no issues. Plus I have a 2300 mile in 24hrs trip unterthe belt too. that alone should tell you about the durability of this system

shumby 09-08-2010 11:37 PM

Quote:

Originally Posted by DannyGT (Post 713590)
The fact is this guys, no one has come close to their claims (Stillen's)...period. Those that have, had more mods done and STILL fell short of the advertised claims. Maybe someone messed with the dyno, who knows. Let’s not even bring up RCZ’s car…Custom tuned by a super aggressive tuner amongst other things.

Anyway - those that have the GTM kit are running flawlessly. Shumby, with his fine example of already achieving the numbers of the low power numbered Stillen kits out there with ONLY 6psi, has the most important thing of all, drivability.

That’s what sets apart real tuners....They can [try to] make more HP than the GTM kit but so far the drivability aspect of their tunes is a ******* joke. When you look at both tuners its clear both pushed the kits to the limit, and no one will get those numbers. I sure don’t expect to get 460whp. GTM has a few dyno sheets showing power ranging from 420-460. But their advertised hp claim shows they except, with a safe tune, to be in the 410-430 range. I do know for a fact that I will be in the 410-430whp range, and even more so with water injection/custom tune. My goal even before I bought the SC was strictly to hit 420whp. I know I can hit this with no fancy tune.

I’ll tell you, it’s been a great experience doing this install, and I have to say that GTM is 95% perfect with their instructions. I will be making edit’s to the document so that anyone else tackling this, being it pro or not, can have that much more specificity.


Stop using big words i had to get my dictionary out.;)

MMC Racing 09-09-2010 07:57 AM

Quote:

Originally Posted by DannyGT (Post 713590)
The fact is this guys, no one has come close to their claims (Stillen's)...period. Those that have, had more mods done and STILL fell short of the advertised claims. Maybe someone messed with the dyno, who knows. Let’s not even bring up RCZ’s car…Custom tuned by a super aggressive tuner amongst other things.

Anyway - those that have the GTM kit are running flawlessly. Shumby, with his fine example of already achieving the numbers of the low power numbered Stillen kits out there with ONLY 6psi, has the most important thing of all, drivability.

That’s what sets apart real tuners....They can [try to] make more HP than the GTM kit but so far the drivability aspect of their tunes is a ******* joke. When you look at both tuners its clear both pushed the kits to the limit, and no one will get those numbers. I sure don’t expect to get 460whp. GTM has a few dyno sheets showing power ranging from 420-460. But their advertised hp claim shows they except, with a safe tune, to be in the 410-430 range. I do know for a fact that I will be in the 410-430whp range, and even more so with water injection/custom tune. My goal even before I bought the SC was strictly to hit 420whp. I know I can hit this with no fancy tune.

I’ll tell you, it’s been a great experience doing this install, and I have to say that GTM is 95% perfect with their instructions. I will be making edit’s to the document so that anyone else tackling this, being it pro or not, can have that much more specificity.

Shumby had a custom in person tune. Has any of the few GTM customers there are so far used a "canned" tune?


All times are GMT -5. The time now is 09:38 PM.

Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2025, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO 3.6.0 PL2