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

SAM@GTM 02-28-2010 12:32 PM

Quote:

Originally Posted by JB-370z (Post 421814)
How many belts have yall broken???Honestly Sam-

After dealing with so many other supercharger system over the years. belt issues was always a problem with a lot of them. So we went to extreme masseurs in our design strategy to make sure that belt slippage and brake wont happened. Our system have about 80 % belt rap around the pulley which is really unheard of. So to this day I"m happy to report there has been ZERO problems with our belt set up .

Sam

SAM@GTM 02-28-2010 12:37 PM

Quote:

Originally Posted by JB-370z (Post 421814)
Do you think stage 3 with exhaust, hhc's could hit 465hp???

With right combination of SC housing and pulley I think it will

Sam

Red370 02-28-2010 12:39 PM

Now this is stuff I like to hear!

Togo 02-28-2010 01:15 PM

Quote:

Originally Posted by SAM@GTM (Post 421273)
Still running 8 psi, just spent some more time on the tuning, here is the latest graph so now we are at 420 RWHP and 330 RWTQ .

Sam


Quote:

Originally Posted by travisjb (Post 421512)
looks good, sam... hey, why does the sc curve drop 250 rpms sooner than the stock curve ? thx


I noticed this the same as Travis. Sam how come the SC run ends at roughly 7300RPM where the stock one is roughly 7600RPM?

LiquidZ 02-28-2010 02:29 PM

Sam, sorry if this has already been covered, but why are your running with no air filters?

DannyGT 02-28-2010 02:34 PM

Quote:

Originally Posted by Buddy Revell (Post 421624)
330 isn't 340-350, but who cares, lol.;) Very good dyno numbers from GTM.:tup:

;) ;) All he did was fine tune this...lets imagine for once, whats going to happen with 2 more psi + full exhaust. I agree tho, very nice numbers so far. Especially for Stage 1...

370z4Steve 02-28-2010 02:38 PM

if thats with full stock exhaust system its like close to 500 HP and400 FT/LB @the crank ...

going for that CARB Cert eh SAM ? :)

Silo 02-28-2010 02:48 PM

Quote:

Originally Posted by Togo (Post 422026)
I noticed this the same as Travis. Sam how come the SC run ends at roughly 7300RPM where the stock one is roughly 7600RPM?


Most probably because he did not want to run it into the rev limiter on boost and let off earlier. Since revs climbed significantly faster then without boost he probably cound't "time" it better.

Buddy Revell 02-28-2010 02:55 PM

Now, with the older VQ's, 8 psi was just about right to keep a nice level of reliability on a daily driver with stock internals on pump gas. I wonder what's a good amount for our newer VQ37's?

Togo 02-28-2010 02:59 PM

Quote:

Originally Posted by Buddy Revell (Post 422285)
Now, with the older VQ's, 8 psi was just about right to keep a nice level of reliability on a daily driver with stock internals on pump gas. I wonder what's a good amount for our newer VQ37's?

Well the newer VQs have a stronger set of internals so at least we know we can run what the older VQs did safely and 8psi isn't too shabby.

Buddy Revell 02-28-2010 03:43 PM

Quote:

Originally Posted by Togo (Post 422289)
Well the newer VQs have a stronger set of internals so at least we know we can run what the older VQs did safely and 8psi isn't too shabby.

We do run higher compression ratio than the VQ35, though.

Togo 02-28-2010 03:51 PM

Quote:

Originally Posted by Buddy Revell (Post 422368)
We do run higher compression ratio than the VQ35, though.

Oh really, wasn't aware of that

stormcrow 02-28-2010 03:52 PM

GTM vs. Stillen
 
Not to be desparaging against any one vendor, but barring any wires that will no longer be there, which engine bay would you rather have? Yes, this is a rhetorical question.

Stillen

http://www.lansystem.com/jh/stillen-sc.jpg


GTM

http://www.lansystem.com/jh/gtm-sc.jpg

Togo 02-28-2010 03:57 PM

^ In the alternative companies defense, they are making a custom cover to make things look nice. However that will also likely increase the cost of the opposing kit.

theDreamer 02-28-2010 04:03 PM

Quote:

Originally Posted by Togo (Post 422396)
^ In the alternative companies defense, they are making a custom cover to make things look nice. However that will also likely increase the cost of the opposing kit.

And not to get deep into it, but Stillen took that picture during R&D testing, they have stated multiple times that is not what it will look like in the end.
On topic: Glad to see dyno numbers rolling out GTM, now lets get these kit(s) on customers cars (who are on this board) to get reviews.

G37Sam 02-28-2010 04:03 PM

I like the Stealth look of GTMs kit tbh, would pass registration with no problems here

I'm not sure even my dealership would notice :bowrofl:

theDreamer 02-28-2010 04:04 PM

Quote:

Originally Posted by G37Sam (Post 422410)
I like the Stealth look of GTMs kit tbh, would pass registration with no problems here

I'm not sure even my dealership would notice :bowrofl:

Sir, what is this belt noise I am hearing, not sure that is stock.

Oh it is, special edition for my year. :D

stormcrow 02-28-2010 04:23 PM

Quote:

Originally Posted by Togo (Post 422396)
^ In the alternative companies defense, they are making a custom cover to make things look nice. However that will also likely increase the cost of the opposing kit.

The cover won't hide that god-awful coolant resevoir for the pre-cooler. This is one of the big eye-sores that never goes away for Stillen. It even made my 2006 Pathfinder engine bay look like garbage.

In truth, there is no comparison between the two kits as far as aesthetics go. Absolutely no way that a cover could make the coolant resevoir or gawdy intake piping with bracket remotely appealing. Nothing will change about how the coolant hoses from a poorly designed intercooler/pre-cooler are draped across the valve covers and how the main wiring harness is relocated. This, again, is typical of these kits. My Pathfinder kit was obtrusive and developed poorly. Just from the few pictures shown in the Stillen thread, I can tell the same mistakes have been repeated. The level of Research and Development between the two kits is painfully obvious.

RCZ 02-28-2010 04:37 PM

Quote:

Originally Posted by stormcrow (Post 422456)
In truth, there is no comparison between the two kits

Thats about as much as you got right. If you only knew....

Your comments fit right in with this thread though so I'm not surprised. Did Sam put you up to this?? :rofl2:

I'm entertained by the irony.

stormcrow 02-28-2010 05:02 PM

Quote:

Originally Posted by RCZ (Post 422502)
Thats about as much as you got right. If you only knew....

Your comments fit right in with this thread though so I'm not surprised. Did Sam put you up to this?? :rofl2:

I'm entertained by the irony.

If I only knew what?

My thoughts, opinions, facts stem from actually having purchased, installed and utilized a Stillen kit. If you prefer them, so be it. If you want to be educated, read the root thread of the links I am about to post as the links are solely my responses. A LOT more great information in that thread.

MY350Z.COM Forums - View Single Post - Stillen Super Charger for the HR? - Post 184

MY350Z.COM Forums - View Single Post - Stillen Super Charger for the HR? - Post 187

As you can see, I have a lot of experience with F/I cars. And I just traded my 09 GT-R in for the 2010 370Z Nismo so that I could have yet another project car.

As far as Sam putting me up to this, well, since I am east coast and 30 miles from Forged Performance, you do the math. :) Though, maybe I should ask Sam to put me on the payroll. :happydance:

EDIT - links are leading to same post even though they are different URLs. For those interested, check post 184 and 187 of the above posted thread.

RCZ 02-28-2010 05:18 PM

You might as well..

Its ok, I dont want to start a discussion on GTM's thread. Frankly, I don't feel like I have to..

Buddy Revell 02-28-2010 05:19 PM

Although I do prefer the more subtle engine bay of the GTM kit, aesthetics aren't really a priority for me when judging between the two kits.

stormcrow 02-28-2010 05:22 PM

Quote:

Originally Posted by RCZ (Post 422617)
You might as well..

Its ok, I dont want to start a discussion on GTM's thread. Frankly, I don't feel like I have to..

Feel free to PM me with any information you find pertinent to your side of the debate. It doesn't have to be here or in any other thread. But, there is no refuting actual experience...the experience that I have had with a Stillen designed supercharger kit.

RCZ 02-28-2010 05:57 PM

Quote:

Originally Posted by stormcrow (Post 422627)
Feel free to PM me with any information you find pertinent to your side of the debate. It doesn't have to be here or in any other thread. But, there is no refuting actual experience...the experience that I have had with a Stillen designed supercharger kit.

Sorry man, no can do. Also, this isn't your pathfinder so you have about as much experience with the stillen 370z sc kit as the rest of the folks here.

stormcrow 02-28-2010 06:09 PM

Quote:

Originally Posted by RCZ (Post 422693)
Sorry man, no can do. Also, this isn't your pathfinder so you have about as much experience with the stillen 370z sc kit as the rest of the folks here.

No can do? This tells me you are wasting bandwidth. I see from your sig that you are a Stillen fanboi. No worries.

For the record, whether or not the kit is for the 370, 350, Tundra or Pathfinder, they are all the same basic components with the same basic R&D. And as stated above, I can visually see, from the pictures posted by Kyle in the Stillen thread, the same poor product design in the 370Z kit as was in my Pathfinder kit.


EDIT - Apologies, Sam, for taking your thread so far off-topic. I am truly sorry. Ending such now.

budakai 02-28-2010 06:41 PM

Quote:

Originally Posted by stormcrow (Post 422580)
If I only knew what?

My thoughts, opinions, facts stem from actually having purchased, installed and utilized a Stillen kit. If you prefer them, so be it. If you want to be educated, read the root thread of the links I am about to post as the links are solely my responses. A LOT more great information in that thread.

MY350Z.COM Forums - View Single Post - Stillen Super Charger for the HR? - Post 184

MY350Z.COM Forums - View Single Post - Stillen Super Charger for the HR? - Post 187

As you can see, I have a lot of experience with F/I cars. And I just traded my 09 GT-R in for the 2010 370Z Nismo so that I could have yet another project car.

As far as Sam putting me up to this, well, since I am east coast and 30 miles from Forged Performance, you do the math. :) Though, maybe I should ask Sam to put me on the payroll. :happydance:

EDIT - links are leading to same post even though they are different URLs. For those interested, check post 184 and 187 of the above posted thread.

Why the hell would you sell your GTR for a 370z...The 370z is small as ****...that's why I didn't get one...I got the g37 because I couldn't afford a gtr...Why would you downgrade all the way down to a nissan z....just curious...

theDreamer 02-28-2010 06:44 PM

Quote:

Originally Posted by budakai (Post 422753)
Why the hell would you sell your GTR for a 370z...The 370z is small as ****...that's why I didn't get one...I got the g37 because I couldn't afford a gtr...Why would you downgrade all the way down to a nissan z....just curious...

He said project car, the Z parts are cheaper than a GT-R so for a project car it is better.

B1nks 02-28-2010 06:47 PM

I really wanna check those links out but I've been banned from my350.com for "harassment" to a mod by telling him "my bad, don't hurt me with your e-jiu jitsu". What a bunch of ******* tards. Keep this debate up though ! I know who I like better and it isn't Stillen not based off of personal experience but off of other peoples in the past. I do like their g3 intakes though. :tup:

Z eliminator 02-28-2010 07:04 PM

So how many of you guys are actually going to buy the GTM kit?
Yes i had a stillen on my 350, You would not believe what broke on it.
Yes i hurt my motor with it. In defence of stillen they did send me all the parts to fix it and yes they paid me for the labour that the dealer charged me to fix it.. I think thats its a great daily driver SC at 10 lbs boost on my ported M-62 blower, What broke on it . intercooler cooling pump, the pulley assembly drive shaft between the blower and the crank pulley. It only made 303 rwhp.
I have bought tons of parts from Sam at GTM ( 4.2 stroker) and when we spoke about the SC , i decided to by it because it looked like a 400 hp kit and thats all i need. 417 rwhp or more is a lot of power in a 370. Now add 2 more lbs of boost and you may get 446,
Do you guys know how much rwhp a stock GTR has. ( 417 rwhp).
Now we have car which is aprox 700 lbs lighter with the same rwhp, It will be handful to drive,
I call my GTM SC a poor mans GTR,
Its going to be a great drag race in the 1/4 mile.

stormcrow 02-28-2010 07:17 PM

Quote:

Originally Posted by budakai (Post 422753)
Why the hell would you sell your GTR for a 370z...The 370z is small as ****...that's why I didn't get one...I got the g37 because I couldn't afford a gtr...Why would you downgrade all the way down to a nissan z....just curious...

As theDreamer mentioned, the trade down was due to the desire to build a car as a project. But, as far as expense goes, building/modifying the GT-R wasn't really an issue...the issue lay in the fact that most vendors were charging astronomical amounts for aftermarket parts that were either slightly superior to OEM or, even at times, inferior. GT-R owners term it the "GT-R tax." Couple that with the fact that the GT-R is extremely bleeding edge as far as technology goes and typical power adders do not work, it will be a while before tuners and developers can catch up and provide a solid foundation on which to build the platform. I didn't feel like being a pioneer or guinea pig.


Quote:

Originally Posted by B1nks (Post 422762)
I really wanna check those links out but I've been banned from my350.com for "harassment" to a mod by telling him "my bad, don't hurt me with your e-jiu jitsu". What a bunch of ******* tards. Keep this debate up though ! I know who I like better and it isn't Stillen not based off of personal experience but off of other peoples in the past. I do like their g3 intakes though. :tup:

How dare you harass the superior my350z.com mods?! :p Some of those boys are rather touchy. You should be able to read the links without having a membership or the ability to log in, though.

1slow370 02-28-2010 08:55 PM

as for rcz being a stillen fanboy.... Maybe you don't know this stormcrow but stillen has the most underdriven pulley, the second best gains in a catback exhaust, the only headers on the market for our cars, the cheapest oil cooler kit that cools oil, and THE BEST cold air intake for our cars. THis has all been proven multiple times by multiple people. Basically he is one of the few pwople on here that actually has a clue about what they are doing and try not to start fights in GTM's thread but keep in mind the new stillen kit is VERY different than the old one which had an undersized blower.

stormcrow 02-28-2010 09:46 PM

Quote:

Originally Posted by 1slow370 (Post 423101)
as for rcz being a stillen fanboy.... Maybe you don't know this stormcrow but stillen has the most underdriven pulley, the second best gains in a catback exhaust, the only headers on the market for our cars, the cheapest oil cooler kit that cools oil, and THE BEST cold air intake for our cars. THis has all been proven multiple times by multiple people. Basically he is one of the few pwople on here that actually has a clue about what they are doing and try not to start fights in GTM's thread but keep in mind the new stillen kit is VERY different than the old one which had an undersized blower.

We should start a new thread to debate Stillen products versus the world. This is not the place. I can tell you, though, that there is nothing new about the Stillen SC kit for the 370Z except for the fact that they ditched the Eaton roots blowers and went Vortech centrifugal.

The design, layout, and routing of multiple unnecessary water lines is still the same. The moving of key wiring harnesses and parts is still the same. The gawdy and poorly placed coolant resevoir for pre-cooler is still the same. The necessity of wiring and relays for the ECM and pre-cooler coolant pump is still the same. It's a mess. Honestly, every Stillen kit I have seen looks like it was R&D'ed in someone's backyard.

I have zero against Stillen. I have had plenty of their products. From camber/toe arms to front bumpers to sway bars to full bolt on supercharger kits. Some had issues, others did not.

But, let me point out that we are talking about the supercharger kit. None of their other products. The Stillen products that you mentioned above are more for N/A cars than F/I cars...especially underdrive pulleys and headers. Again, Stillen makes some fine products. But, given the choice of the GTM SC kit or the Stillen SC kit, those of us with experience in the F/I arena would choose the GTM kit hands down.

travisjb 02-28-2010 09:59 PM

Quote:

Originally Posted by stormcrow (Post 422709)
For the record, whether or not the kit is for the 370, 350, Tundra or Pathfinder, they are all the same basic components with the same basic R&D. And as stated above, I can visually see, from the pictures posted by Kyle in the Stillen thread, the same poor product design in the 370Z kit as was in my Pathfinder kit.

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

travisjb 02-28-2010 10:02 PM

Quote:

Originally Posted by stormcrow (Post 423266)
We should start a new thread to debate Stillen products versus the world...

to your credit, this is definitely more specific and our posts crossed paths... I agree on a different thread - or just go to the stillen thread and post your thoughts directly there...

Buddy Revell 02-28-2010 10:04 PM

Quote:

Originally Posted by travisjb (Post 423307)
to your credit, this is definitely more specific and our posts crossed paths... I agree on a different thread - or just go to the stillen thread and post your thoughts directly there...

Agreed. It would be interesting to read Kyle and Josh's responses on that thread to stormcrow's points about Stillen's previous and current SC kit designs.

1slow370 02-28-2010 10:36 PM

well, when you use a water to air intercooler you kinda need hoses. the gtm kit is using a rotrex unit that has it's own oiling system that needs a pump, filter, ?reservoir maybe? not sure on this one, and a crapload of lines. you also need to install new front side accessory brackets, which may require wire/hose extensions. There is also the difference in tuning stillen is most likely using a cobb accessport this time instead of the piggyback they normally use and they have mentioned that they may be divorcing the iat duties from the air mass sensor and relocating them to an individual sensor in the manifold while gtm is going with a blow through setup which means they won't be able to detect pressure in the manifold from the stock 1bar map sensor and the sensors being blow through won't be able to read the extra airflow so there is going to be some serious hacking of the tune on their part to get it to run. both kits are going to have to use recirculation valves as without a pressure sensor the car would run excessively rich on off throttle if vented to atmosphere. I suggest you stop being a tool saying you know more about F/I than the rest of the world and actually read both threads like most of us have.

Edit: why don't we all go back to the boring state of sitting in the corner and waiting for both companies to actually release their kits before making decisions and being a bunch of racists prejudicing the kits based on thier manufactures. Oh and most of us think the old m62 stillen kits were retardly underpowered

SAM@GTM 02-28-2010 10:50 PM

Quote:

Originally Posted by 1slow370 (Post 423359)
well, when you use a water to air intercooler you kinda need hoses. the gtm kit is using a rotrex unit that has it's own oiling system that needs a pump, filter, ?reservoir maybe? not sure on this one, and a crapload of lines. you also need to install new front side accessory brackets, which may require wire/hose extensions. There is also the difference in tuning stillen is most likely using a cobb accessport this time instead of the piggyback they normally use and they have mentioned that they may be divorcing the iat duties from the air mass sensor and relocating them to an individual sensor in the manifold while gtm is going with a blow through setup which means they won't be able to detect pressure in the manifold from the stock 1bar map sensor and the sensors being blow through won't be able to read the extra airflow so there is going to be some serious hacking of the tune on their part to get it to run. both kits are going to have to use recirculation valves as without a pressure sensor the car would run excessively rich on off throttle if vented to atmosphere.

With all do respect here, you are way off with what ever you posted above in regards to reading pressure and rich off throttle. i really can't go in detail right now but i will be back to comment on you post after finishing the press release

Sam

jmlenz 02-28-2010 11:15 PM

Quote:

Originally Posted by SAM@GTM (Post 423374)
With all do respect here, you are way off with what ever you posted above in regards to reading pressure and rich off throttle. i really can't go in detail right now but i will be back to comment on you post after finishing the press release

Sam

:owned:

1slow370 02-28-2010 11:31 PM

Sorry got a little muddled posting about both kits at once. A few pages back i asked you if you had changed out the stock MAP sensor and you had said no, being blow-through you have no way of gauging the mass of the air in the manifold then so you must have almost rewritten the tunning tables of the car as from like 3000rpm to redline the map would be maxed out. You have a blow through set up so you wouldn't have to worry about using a blow off valve as the pressure would dip below the max range of the map sensor and the engine would have all the information it would need again. The thing with not using an upgraded MAP sensor and an extended table is that any time the motor is over 1 psi it will only be able to reference a single line on any table referencing load so the motor will be running off of maybe 6 cells of the maps for fuel and igniton when ever it is under boost instead of having the full map to work from. wether you would be at 8 psi or at 2 the motor would only know it has over 1. Which is why i keep asking if you upgraded the damn map sensor or not.

Stillen on the other hand has gone the other route of draw through so even if the pressure is off it is measuring the flow of the air at atmospheric through the MAF sensor so it can calculate the mass of the air off of that and correct the way the engine runs with the maf meter tables. which through the GTM system would also be damn near maxed out when under boost, as the amount of air flowing through the sensor would remain the same only it's density would be increasing constantly. stillen would have a problem if they ran an open blow off valve as the metered air would be disappearing. The gtm kit relies on not metering anything and just telling the motor how much air it should have (unless you upgraded that MAP sensor) as they have taken a N/A car retained all the stock sensors(unless they upgraded) and the car is in no way designed to read pressures over atmospheric in that stock form unless you move sensors around like stillen has.

RCZ 02-28-2010 11:53 PM

Quote:

Originally Posted by stormcrow (Post 422709)
No can do? This tells me you are wasting bandwidth. I see from your sig that you are a Stillen fanboi. No worries.

For the record, whether or not the kit is for the 370, 350, Tundra or Pathfinder, they are all the same basic components with the same basic R&D. And as stated above, I can visually see, from the pictures posted by Kyle in the Stillen thread, the same poor product design in the 370Z kit as was in my Pathfinder kit.


EDIT - Apologies, Sam, for taking your thread so far off-topic. I am truly sorry. Ending such now.


:inoutroflpuke:


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