take a look here Turbonetics received CARB cert for its Mustang kit and Turbonetics kits come with warranties as well.

I can't wait until this system is on the market. We can't wait until we install this on a 370Z!!! Along with other bolt on we have!!

They posted an update: Welcome to the official GReddy USA blog: GReddy twin 20G update on the IT 370Z

http://2.bp.blogspot.com/_1agu36yXDm...0TT-update.jpg

cant wait to see some dyno runs

the car is very light and small so i don't need 600hp. i will be happy with 400-450 hp supercharged 370z. and besides the 370z needs more low end torque not top end.

tuner companies should invest their money and time into building a supercharger kit instead of a tt kit. I mean we are the people who own the car and their building a kit to sell to us so they should build something that we want, not the other way around.

well greddy knew they had a grand slam with the 350Z TT kit so they would just assume the same for the 370Z. And yes the Z is light but I would by no means call it very light.

Exactly, since when is 3300+ lbs light?

I'm happy to see that they are going with the 20G turbos since I think even the GT28 based systems are overkill for what is essentially a 1.85 liter, three cylinder turbo system. Hell, two Mitsu EVO III 16G's (or equivalent) would probably produce crazy fast spools and not run out of breath on the high end.

Don't make me get the compressor maps!

I always thought the 20G turbos are a bit of an overkill, but we'll see what they can do with them

I agree. I think for 95% of us who drive 99% of the time on the street, the smaller hairdryers would be the way to go. Quick spool rules on the street. A nice flat curve, not the "S", is much more fun for 99% of the driving I do.

Well, it's not super-light, but it sure beats the hell out of the US muscle-cars that are competing for some of the same price range and marketshare, which are weighing in 3-500 lbs heavier than the 370Z.

I would also take a turbo over a supercharger, less stress on the engine as well.

That's not really true. They create different stresses, and it is easy to argue that driving another accessory is a lot less stressful than putting many pounds of pressure for the engine to work against between the exhaust valve and turbine. And that's not to mention the HEAT. Turbo setups run a helluva lot hotter than supercharger.

How well do the Mitsubishi 20G turbos fare?

How do they fare what?

How do they perform? Are they reliable?

where are these things anyway?

I had a greddy 20g for my eclipses, put it on 3 different cars over 5yrs and never had a problem with it.. probably still going for all i know.. A LOT better then the multiple garetts that i went through. lots of bearing going out and a few wheels breaks with the others.. the greddy nothing but booost!! I had a T3/T4 on my GSX and was running high 12's - low 13s with a few bolts ons. then put on the greddy and droped to 12.4's with nothing more then intake,exaust, Apexi intercooler and injectors.. ohh and 23lbs of booost

Nissan GT-R Curb weight 3,814lbs(nissan site)
Mitsubishi Evo X Curb weight 3595 (i might be few lbs off)
BMW m3 e90 Coupe Unladen weight 3704 lbs (got it from bmw site)
BMW 335i Unladen weight 3571lbs (got it from bmw site)
BMW 135i Unladen - Manual Transmission 3373 lbs (got it from bmw site)
G37 S 6 speed Manual Curb weight 3,662 lbs(got it from infinity site)
Hyundai Genesis Coupe 3.8 Track 3389 lbs
Chevy Camaro SS 2SS 3849 lbs
Ford Mustang Gt 3534 lbs. (might be a little off)
(to be fair i included a two seater)
BMW z4 sDrive35i Unladen weight 3450lbs


Nissan 370z base 6speed MT Curb weight 3,232lbs
370z TOURING 6speed MT Curb weight 3,278 lbs

so when you do the math Mr Genius the 370z is lighter then all of its competitors. Its not a s2000 but its also not a go cart either or a mini so im pretty happy with the weight of the car.

by the way you should get out the dark sometimes and go to school maybe learn some math. That might be too much for you at first so lets start now. ill be teaching you simple math so u know that a 370z is much lighter then all those cars listed above.

1+1=2
2+2=4
2-2=0

i think class is over for today. :shakes head:


and by the way only the nismo 370z is 3300lbs the touring and the base are lighter:happydance:

What are the bearings like on the Greddy? Are they journal bearings?

Wow. You are missing the entire point. Not to mention going overboard and being quite rude. This forum is pretty laid back, so grab a beer and chill.

The 370Z still isn't light, and listing a bunch of heavy cars doesn't make it light either, save for relative comparison to those cars. It's not about math, it's about weight.

Now maybe you just aren't aware of what is considered normal weight. It's fine. I've owned quite a few cars and have good points of reference. For the industry, three thousand pounds is considered a normal sized car. The majority of cars are on the big side. Which means that the Z probably finds itself closer to the average size of cars that are much larger. No one would argue that any of those cars you listed aren't heavy (except again, perhaps relative to other cars you listed). Also, no one would argue that the Corvette is light, much less VERY light as you said the Z is and the Vette is 100 lbs lighter than the Z.

Your numbers are close, but still a little low. The 370Z Touring/Manual has an actual curb weight closer to 3330 lbs. Want proof? Forged Performance weighed their car on corner scales with nearly a full tank of gas (which is how you are supposed to measure curb weight in the States) and got 3323 lbs. Top off the tank and see where she lands (hint: it's more than 3323).

Now, this thread isn't about weight. If you want to continue the discussion of the 370Z's weight, please feel free to start a new thread and PM me to take part.

____________________________________

As for the 20G, I had mine on a 2.3L stroker on my 97 Eclipse GSX. That thing spooled very quickly and never ran out of steam. I ran it at 21psi on 93 octane here. It's kind of conservative, but I prefer to overbuild and underrun in order to add longevity.

show me another car thats close to the price range of the z with the same power but lighter and ill consider the z not be a very light car.

im not talking about a Porsche which is 20k above the z price.

If we payed 60k+ for the z im sure it would be within 2900-3000lb

I said I'm not jacking this thread and you should agree to that. Since you won't take my advice, here you go: http://www.the370z.com/nissan-370z-g...light-car.html

Can we talk about the turbo kit again?

Sure. Assuming that they are planing to run sub 12 psi, I don't think even the 20G is a good match for this application. It's a step in the right direction compared to the GT28.

20G turbo woah, wouldnt it take very long to spool up compared to a 18g turbo?

LOL NO...20G are old, and there has been alot of tech since 20G were, OMFG SO BIG!!!

HA! You want find it hard to spool two of these bad boys say, around 3200rpms..

Were not talking greens or reds...its a 20G, we shouldnt have to hard a time to spin them quickly...

+1 for in.the.dark! way to go keeping the thread on topic!
anyways! back to topic~! 20gs Droolz~!

Two 20Gs ?! 20G best efficiency is @ 20PSI and it holds good efficiency to 24-25PSI. Also As far as I know it has journal bearings, so it's slower than ball bearing for spoolup.

Most DSMs run these @ 18-23PSI and make around 400HP using single turbo on 2.0L motor. I think these would be little too big for 370z for a simple Stage1 400-500HP@ 10-14PSI config, more like 650-750HP @ 20PSI setup.

Anyone got engine flow chart for 37VHR?

bigger isn't always better, 20g is too much.

+1. I think the greddy kit won't be as popular as it was on the 350Z and many more 370Z owners will be looking into other TT kits or most likely S/C kits just because they don't want that much turbo lag nor do they want that much power.

Don't you guys think that the folks over at Greddy know what they are doing? I have no idea what the difference is between an 18G or 20G turbo...so let's just see how it turns out....hopefully better then some are expecting.

the 20G's are on the tuner kits for 350Z as well, but 18G's on the bolt on kit, but it seems the tuner kit is the way they are going so they don't have to deal with the lack of a good engine management from Greddy

the tuner kits come with the bigger turbos assuming people will go big with an engine build and such, they are bigger and will have a slightly lower spool but probably not very noticeable

rockin the mitsu turbos :)

20g's are quiet a bit larger than gt28's..coming from mitsu i would say that a 16g evoIII would be a good twin setup for 12 psi..they have good flow volume but can run almost 30 psi...a 20g i would think would be to big for a low boost tt setup...FP sells a turbo with a 16g housing and 20g internals, quick spool and monster top end

Well, if you want to go that route, even the EvoIII 16g is going to be too large, but yeah that's exactly what I'm saying.

As for SixBone, GReddy is probably assuming that the person putting this kit on has dropped their compression ratio and will be running in these turbo's efficiency range.

For a street setup, the sweet spot would likely be somewhere in the T28 (not GT28) to 16g range in mitsu-speak. The spool would be instant and would hold to redline. I'm looking for a good compressor map. Anyone?
http://turbocarz.com/shapegsx/16g/compressor_plot.gifhttp://www.ztechz.net/sitebuildercon...6h-20g-cfm.gif
http://www.atpturbo.com/root/maps/im...rscompress.gif

I know for me, I want something with really quick spool time if I were to go turbo. I want an awesome low end for street driving, and an occaisional track day.

yea i know even the evo 3 would be a little big but it gives you some room for lower compression if you wanted to do a rebuild someday...the small 16 or t28 would be a better option if you plan on keeping stock compression ratio for as long as you own the car...a 14b would be the closest if you wanted to run 12 psi...i know there are plenty of graphs but i dont feel like hunting right now

keep in mind if you have a manual trans then you can manipulate your powerband with the clutch to not have any lag if you are comfortable with your car (to a certain extent)

having high compression will spool the 20g faster then if you where at 9.1 ish range. so i think that 16g would be really fast, probably hitting full boost at 3200rpm with the 20g at around 3600. You could always put the turbos that come stock on the 3000GT and have full boost at 2400rpm... would probably crap out though after 6k

I probably wouldn't be able to do that. I have never owned a turbo car.