GT Motorsports: 370Z Supercharger system development

Buddy Revell · 02-27-2010, 07:20 PM

Quote:

Originally Posted by Red370

I'd like somewhere between 340-350.

340-350 ft. lbs. to the wheels is about what TT'ed VQ37's put out at 6-7 psi. That's probably an unrealistic expectation for a centrifugal SC that builds up boost in a more linear fashion compared to twin-turbos that hit full boost much lower in the rpm range.

DannyGT · 02-27-2010, 07:32 PM

Quote:

Originally Posted by Buddy Revell

340-350 ft. lbs. to the wheels is about what TT'ed VQ37's put out at 6-7 psi. That's probably an unrealistic expectation for a centrifugal SC that builds up boost in a more linear fashion compared to twin-turbos that hit full boost much lower in the rpm range.

He's 20whp shy of that right now with everything else stock...I dont see a problem with reaching that number when you consider everything else that will be added/retuned for.

Buddy Revell · 02-27-2010, 07:52 PM

Quote:

Originally Posted by DannyGT

He's 20whp shy of that right now with everything else stock...I dont see a problem with reaching that number when you consider everything else that will be added/retuned for.

It's currently at 314 ft. lbs., and it's a bit harder to increase torque than peak whp with a centrifugal SC kit.

DannyGT · 02-27-2010, 08:01 PM

I understand, but asking for 20ish more wtq shouldnt be a problem with 2 more psi, a full exhaust system and even with meth like I plan on going. Its all in the tune..lets not forget this is only early stage 1 results.

biggersNISMO · 02-27-2010, 08:08 PM

Quote:

Originally Posted by DannyGT

I understand, but asking for 20ish more wtq shouldnt be a problem with 2 more psi, a full exhaust system and even with meth like I plan on going. Its all in the tune..lets not forget this is only early stage 1 results.

That's what i keep on telling myself.

BlackCherryZ · 02-27-2010, 08:18 PM

getting excited..............except it's missing one final ingredient..........

by far the most important one........... the price.......

not rushing it.....by all means, plz take your time and do what you are good at......but just crossing my fingers...........to have competitive price to dissuade me from going TT.....

also i like the sound of BOV of TT.......... but..........for the price, its too expensive......

we shall have to see.....

also, thanks for updating.......... or else, most of us would have shortened our lives by at least a couple of years due to stress and expectations......... *^^*

NYBladeZ · 02-27-2010, 08:29 PM

its all in the tune...and it seems that both GTM and Stillen are in the preliminary stages of tuning, oh well good things come to those who wait

Red370 · 02-27-2010, 09:01 PM

Quote:

Originally Posted by Buddy Revell

340-350 ft. lbs. to the wheels is about what TT'ed VQ37's put out at 6-7 psi. That's probably an unrealistic expectation for a centrifugal SC that builds up boost in a more linear fashion compared to twin-turbos that hit full boost much lower in the rpm range.

Its completely realistic with a centrifugal supercharger, the Vortech kits for the 350Z were making 440whp with 352 ft./lbs, our engine displaces more than the 3.5L, which leads me to believe that 350 ft./lbs is a very realistic number. I dont understand how we can have a larger engine and make less power with the supercharger. And BTW, this was using the same V-3 blower that Stillen is using.

Buddy Revell · 02-27-2010, 09:10 PM

Quote:

Originally Posted by Red370

Its completely realistic with a centrifugal supercharger, the Vortech kits for the 350Z were making 440whp with 352 ft./lbs, our engine displaces more than the 3.5L, which leads me to believe that 350 ft./lbs is a very realistic number. I dont understand how we can have a larger engine and make less power with the supercharger. And BTW, this was using the same V-3 blower that Stillen is using.

The numbers on Vortech's site are not to the wheels. Notice how they compare their numbers to the 350Z's factory bhp and torque ratings.
http://www.vortechsuperchargers.com/view.php?pcat=15

Red370 · 02-27-2010, 09:16 PM

good point, but be that as it may, we should be making ALOT more bhp, and not around the same numbers.

SAM@GTM · 02-28-2010, 12:49 AM

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

SAM@GTM · 02-28-2010, 12:58 AM

Quote:

Originally Posted by BlackCherryZ

getting excited..............except it's missing one final ingredient..........by far the most important one........... the price.......

Sooner then you think.

Sam

Brazilbro · 02-28-2010, 12:58 AM

Still on stock exaust?!

Im SOLD..

SAM@GTM · 02-28-2010, 01:00 AM

Quote:

Originally Posted by Brazilbro

Still on stock exaust?!

Im SOLD..

And stock cats

and this is still stage 1 .

Sam

Red370 · 02-28-2010, 01:41 AM

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

Now those numbers are more like it! very good work gentlemen.

02-27-2010, 08:01 PM	#1294 (permalink)
DannyGT Track Member Join Date: Jan 2009 Location: Jersey Posts: 919 Drives: 370Z (SOLD) Rep Power: 280	I understand, but asking for 20ish more wtq shouldnt be a problem with 2 more psi, a full exhaust system and even with meth like I plan on going. Its all in the tune..lets not forget this is only early stage 1 results. __________________ Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold) Last edited by DannyGT; 02-27-2010 at 08:04 PM.

02-27-2010, 08:29 PM	#1297 (permalink)
NYBladeZ A True Z Fanatic Join Date: Apr 2009 Location: New York Posts: 2,158 Drives: Lotus Exige S Rep Power: 21	its all in the tune...and it seems that both GTM and Stillen are in the preliminary stages of tuning, oh well good things come to those who wait __________________ 2009 Carbon Fiber/Red 370z aka Trish: Sports Package, Meisterschaft full catback, Fast Intentions Longtube Headers, Injen Long Tube Intakes, UpRev Tune: Sold 2008 Lotus Exige S Club Racer aka Bella, always leaves me smiling

02-27-2010, 09:16 PM	#1300 (permalink)
Red370 A True Z Fanatic Join Date: Jul 2009 Location: Kaiserslautern, Germany Posts: 4,391 Drives: your mom to church Rep Power: 296	good point, but be that as it may, we should be making ALOT more bhp, and not around the same numbers. __________________ 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, 12:58 AM	#1303 (permalink)
Brazilbro A True Z Fanatic Join Date: Mar 2009 Location: Indianapolis, IN Posts: 1,131 Drives: Juke/240Z Rep Power: 849	Still on stock exaust?! Im SOLD.. __________________ Juke AWD/240Z SR20 08 Evo 10(Stage 2) SOLD Fastest Sport 6spd 370Z 11.8 @126.5SOLD

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02-27-2010, 08:18 PM	#1296 (permalink)
BlackCherryZ Base Member Join Date: Jan 2010 Location: Virginia Posts: 183 Drives: 2010 BC-Z M6 Rep Power: 16	getting excited..............except it's missing one final ingredient.......... by far the most important one........... the price....... not rushing it.....by all means, plz take your time and do what you are good at......but just crossing my fingers...........to have competitive price to dissuade me from going TT..... also i like the sound of BOV of TT.......... but..........for the price, its too expensive...... we shall have to see..... also, thanks for updating.......... or else, most of us would have shortened our lives by at least a couple of years due to stress and expectations......... ^^

02-28-2010, 12:49 AM	#1301 (permalink)
SAM@GTM NOT AN ACTIVE SPONSOR. DO NOT BUY Join Date: Dec 2008 Location: CALIFORNIA Posts: 913 Drives: 370Z Rep Power: 18	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