Superchargers for the 370Z?

soaka1 · 05-11-2009, 03:23 PM

Quote:

Originally Posted by john370z

Anyone know how much power is safe to push through the 7sp AT?

i wanna say about 450. but no more then 500.

shumby · 05-10-2009, 06:20 PM

there is a G37 5AT that has tt'd and is stock and has 483 Whp and the tranny is doing fine.

t-ray · 05-11-2009, 12:35 PM

The prior 5ats were finicky. Some guys could hold +100hp/tq of boost for a couple years, and other guys would need valvebody work in a matter of weeks.

Give the 7at some time.

Lug · 05-12-2009, 11:58 AM

Quote:

Originally Posted by t-ray

The prior 5ats were finicky. Some guys could hold +100hp/tq of boost for a couple years, and other guys would need valvebody work in a matter of weeks.

Give the 7at some time.

Another problem was the shift speed on the old 5AT was so slow that the engine would overrev during the shift and hit the rev limiter on almost any FI application on the transmission (see some threads on it at my350z). You had to get a valve body upgrade (at about 1000 bucks) and reflash the rev limit higher to even start using that tranny and it was still weak. The new 7AT seems to be much better with faster shift speeds but it's kind of a wait and see. This tranny holds 390 hp on the FX45 w/o any problems and I assume it's gonna be somewhat over engineered.

wstar · 05-12-2009, 04:03 PM

Quote:

Originally Posted by Lug

Another problem was the shift speed on the old 5AT was so slow that the engine would overrev during the shift and hit the rev limiter on almost any FI application on the transmission (see some threads on it at my350z). You had to get a valve body upgrade (at about 1000 bucks) and reflash the rev limit higher to even start using that tranny and it was still weak. The new 7AT seems to be much better with faster shift speeds but it's kind of a wait and see. This tranny holds 390 hp on the FX45 w/o any problems and I assume it's gonna be somewhat over engineered.

The rev limit thing may well be an issue with FI with our 7AT too. The overrev is tiny and barely noticeable, mostly on 1-2, but you can tell it's on the verge of not reacting quickly enough. Right now the main limitation is my reaction time though. You have to learn to click a little bit before you want the shift to occur, so you don't bump the redline before the 7AT even starts the actual shift. I'm getting better at it every day, but clicking at exactly the right moment on the 1-2 and 2-3 shifts during WOT accel is still a little challenging.

LiquidZ · 05-13-2009, 01:16 PM

Quote:

Originally Posted by wstar

The rev limit thing may well be an issue with FI with our 7AT too. The overrev is tiny and barely noticeable, mostly on 1-2, but you can tell it's on the verge of not reacting quickly enough. Right now the main limitation is my reaction time though. You have to learn to click a little bit before you want the shift to occur, so you don't bump the redline before the 7AT even starts the actual shift. I'm getting better at it every day, but clicking at exactly the right moment on the 1-2 and 2-3 shifts during WOT accel is still a little challenging.

A little off topic, but I wish I could have driven a 7AT. Nissan seems to have done an excellent job with it and it sounds like a blast to drive.

Diversion · 05-13-2009, 03:37 PM

Quote:

Originally Posted by LiquidZ

A little off topic, but I wish I could have driven a 7AT. Nissan seems to have done an excellent job with it and it sounds like a blast to drive.

First 370 I drove was 7AT... they are fun.. but I just can't get over the disconnected feel... but it was a breeze to drive fast without worrying about poor shifts!

chad520320 · 05-11-2009, 01:02 PM

I wish Kenne Bell would do their twin screws for something non-American... Maybe a 370...
That would own all other SC's, plus they're smaller than a typical roots.

soaka1 · 05-11-2009, 03:22 PM

i ran i stock 370 today. and all i have in the stillen gen3. and i pulled cars... alot of them.

Crash · 05-11-2009, 07:07 PM

I want to see them make a mammoth blower for the 370... You'll gain 80HP just from efficiency alone.

Josh@STILLEN · 05-16-2009, 05:30 PM

That press release was issued by the builder of the car, who we had never spoken to.. they added us as a supercharger.. I don't know why.

It wasn't STILLEN who was entering..

Phimosis · 05-17-2009, 02:28 PM

Oh wow. Lol. That seems pretty shady. Not on Stillen's part... but it still is bad that your name got attached to a failed project.

Since you've told us that Stillen is planning on retaining the stock hood for their upcoming 370z supercharger project, can we assume that positive displacement supercharging is out? The underhood space is so small that the stock intake manifold is within millimeters of the hood.

I think a ATI Procharger C2 would look sweet in there:

Think you could fit something like that with a custom intake manifold that accomodates both stock throttle bodies on the left side of the manifold? You could go from the supercharger to intercooler to throttle bodies as a single pipe, all on the left side, then split it with a Y as it gets to the throttle bodies.

I'm just dying to know what you guys are up to......

-Phim

Minicobra1 · 05-17-2009, 02:46 PM

Quote:

Originally Posted by Phimosis

I'm just dying to know what you guys are up to......

-Phim

Yeah, throw us a bone here

wstar · 05-17-2009, 02:54 PM

I think we've already gotten all the bones we're gonna get until they're later in the development process.

LiquidZ · 05-20-2009, 11:36 AM

Quote:

Originally Posted by Phimosis

Oh wow. Lol. That seems pretty shady. Not on Stillen's part... but it still is bad that your name got attached to a failed project.

Since you've told us that Stillen is planning on retaining the stock hood for their upcoming 370z supercharger project, can we assume that positive displacement supercharging is out? The underhood space is so small that the stock intake manifold is within millimeters of the hood.

I think a ATI Procharger C2 would look sweet in there:

Think you could fit something like that with a custom intake manifold that accomodates both stock throttle bodies on the left side of the manifold? You could go from the supercharger to intercooler to throttle bodies as a single pipe, all on the left side, then split it with a Y as it gets to the throttle bodies.

I'm just dying to know what you guys are up to......

-Phim

Regressing back to my previous car (Mustang), positive displacement superchargers typically removed the intake manifold and sat nicely in the valley between the heads. I'm not too familiar with the VQ37VHR layout, but it could very well be likely that a positive displacement S/C can still fit if it can sit nicely in between the heads.

Now, something unrelated:

Personally, if its a positive displacement S/C, it has to be a twin screw to be worth my time. At the very least, an Eaton TVS blower would do. Supercharging the VQ37VHR would most likely need to be a positive displacement because of the DTB. I can easily see a positive displacement S/C replacing the manifold, and both throttle bodies and going to a larger, single intake pipe and filter.

Just my

05-10-2009, 06:20 PM	#2 (permalink)
shumby Captin Canuck Join Date: Dec 2008 Location: with your mom Age: 45 Posts: 6,288 Drives: your sister Rep Power: 237	there is a G37 5AT that has tt'd and is stock and has 483 Whp and the tranny is doing fine. __________________ Originally Posted by SAM@GTM Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living . Sam

05-11-2009, 07:07 PM	#10 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 590	I want to see them make a mammoth blower for the 370... You'll gain 80HP just from efficiency alone. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

05-17-2009, 02:54 PM	#14 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3595	I think we've already gotten all the bones we're gonna get until they're later in the development process. __________________ 7AT Track Car! Journal thread / Car setup details

05-11-2009, 12:35 PM	#3 (permalink)
t-ray Base Member Join Date: Apr 2009 Location: bham al Posts: 91 Drives: 05 g sedan 6mt Rep Power: 16	The prior 5ats were finicky. Some guys could hold +100hp/tq of boost for a couple years, and other guys would need valvebody work in a matter of weeks. Give the 7at some time.

05-11-2009, 01:02 PM	#8 (permalink)
chad520320 Base Member Join Date: Feb 2009 Location: Charlotte, NC Posts: 5 Drives: Gaaaarbage Rep Power: 300	I wish Kenne Bell would do their twin screws for something non-American... Maybe a 370... That would own all other SC's, plus they're smaller than a typical roots.

05-11-2009, 03:22 PM	#9 (permalink)
soaka1 Base Member Join Date: Jan 2009 Location: florida Posts: 54 Drives: 370z 6sp gry. Rep Power: 17	i ran i stock 370 today. and all i have in the stillen gen3. and i pulled cars... alot of them.

05-16-2009, 05:30 PM	#11 (permalink)
Josh@STILLEN The370Z.com Sponsor Join Date: Dec 2008 Location: Costa Mesa, CA Posts: 1,197 Drives: 2004 G35 Coupe 6MT Rep Power: 534	That press release was issued by the builder of the car, who we had never spoken to.. they added us as a supercharger.. I don't know why. It wasn't STILLEN who was entering..

05-17-2009, 02:28 PM	#12 (permalink)
Phimosis Enthusiast Member Join Date: May 2009 Location: Oildale, CA Posts: 412 Drives: 2013 911 4S Rep Power: 416	Oh wow. Lol. That seems pretty shady. Not on Stillen's part... but it still is bad that your name got attached to a failed project. Since you've told us that Stillen is planning on retaining the stock hood for their upcoming 370z supercharger project, can we assume that positive displacement supercharging is out? The underhood space is so small that the stock intake manifold is within millimeters of the hood. I think a ATI Procharger C2 would look sweet in there: Think you could fit something like that with a custom intake manifold that accomodates both stock throttle bodies on the left side of the manifold? You could go from the supercharger to intercooler to throttle bodies as a single pipe, all on the left side, then split it with a Y as it gets to the throttle bodies. I'm just dying to know what you guys are up to...... -Phim