GT Motorsports: 370Z Supercharger system development

SAM@GTM · 02-28-2010, 01:32 PM

Quote:

Originally Posted by JB-370z

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, 01:37 PM

Quote:

Originally Posted by JB-370z

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, 01:39 PM

Now this is stuff I like to hear!

Togo · 02-28-2010, 02:15 PM

Quote:

Originally Posted by SAM@GTM

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

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, 03:29 PM

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

DannyGT · 02-28-2010, 03:34 PM

Quote:

Originally Posted by Buddy Revell

330 isn't 340-350, but who cares, lol.

Very good dyno numbers from GTM.

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, 03:38 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, 03:48 PM

Quote:

Originally Posted by Togo

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, 03:55 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, 03:59 PM

Quote:

Originally Posted by Buddy Revell

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, 04:43 PM

Quote:

Originally Posted by Togo

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, 04:51 PM

Quote:

Originally Posted by Buddy Revell

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

Oh really, wasn't aware of that

stormcrow · 02-28-2010, 04:52 PM

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

GTM

Togo · 02-28-2010, 04:57 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, 05:03 PM

Quote:

Originally Posted by Togo

^ 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.

02-28-2010, 01:39 PM	#1323 (permalink)
Red370 A True Z Fanatic Join Date: Jul 2009 Location: Kaiserslautern, Germany Posts: 4,391 Drives: your mom to church Rep Power: 296	Now this is stuff I like to hear! __________________ 2011 Mustang 5.0 \| 3.55's \| Lethal Performance off road H-Pipe \| Magnaflow Muffler Delete \| JLT CAI/Bama tuned 417whp/ 404 ft/lbs

02-28-2010, 03:29 PM	#1325 (permalink)
LiquidZ A True Z Fanatic Join Date: Nov 2008 Location: Columbus, OH Posts: 1,940 Drives: Mag. Black 2009 370Z Rep Power: 705	Sam, sorry if this has already been covered, but why are your running with no air filters? __________________

02-28-2010, 04:52 PM	#1333 (permalink)
stormcrow Enthusiast Member Join Date: Jan 2010 Location: Alpharetta, GA Posts: 267 Drives: 2010 370Z Nismo TT Rep Power: 15	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 GTM

02-28-2010, 04:57 PM	#1334 (permalink)
Togo A True Z Fanatic Join Date: May 2009 Location: E. Northport, NY Posts: 7,597 Drives: Stuff Rep Power: 657	^ 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. __________________ This will decimate all after you put about fifteen grand in it or more, and if we have to, overnight parts from Japan. Joe Clem and Koeppel Nissan

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02-28-2010, 03:38 PM	#1327 (permalink)
370z4Steve Base Member Join Date: Jan 2009 Location: west Posts: 231 Drives: 370z Rep Power: 672	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 ?

02-28-2010, 03:55 PM	#1329 (permalink)
Buddy Revell Enthusiast Member Join Date: Mar 2009 Location: So Cal Posts: 303 Drives: 08 Infiniti G37 Rep Power: 16	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?