Vadian

Hello. I'm planning to put together a custom twin turbo setup for my '04 G35 6MT. The motor will be internally stock until later. I plan to run 7-9psi and hope to make approximately 375-450rwhp.

I wanted to use two SC61's because of my wonderful past experience with one on my Civic, however, I'm thinking two may be too much for the G35 motor. Any opinions? Possibly go a step down? Perhaps two SC34s? I would like to stay with the SC series turbos because of price. I can deal with some lag over the price of the GT series.

Later down the road I plan on building a spare motor to handle 500-600rwhp so if I can get away without upgrading the turbos then, that would be great.

Also, how do you use a compressor map for a twin turbo setup? Do you cut your displacement in half (treat it as two motors) and then calculate your airflow numbers from that for your plot points? I know how to do it for a single setup, but the twin setup eludes me.

Thanks!

Here's a piece of eye candy.

_gurusan_

Two SC61s is going to be pretty laggy.

Why not do a single turbo setup? It simplifies things once you get done with the header and it makes more power

Vadian

I'm welding together all my piping and because of the lack of engine compartment space and the V-engine configuration, it would be quite a challenge to run all the piping. I could do it like the Turbonetics or APS single turbo setup they have out, but I might as well buy one of their kits. I find joy in putting things together myself from scratch.

Thanks!

_gurusan_

well i think two SC61's is too much.

The car has roughly 300 hp right? I suppose you just divide the HP by half....find a turbo that would be good on a 150 hp motor like the SC34 or some kind of t3/t4, and get two of them.

Benjithx

turbo for G35?.....GT35R right, thats a no brainer!!!


too bad its not an M

null.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Benjithx &raquo;</TD></TR><TR><TD CLASS="quote">turbo for G35?.....GT35R right, thats a no brainer!!!


too bad its not an M </TD></TR></TABLE>

hahaha yeah simple as that!

seen4ever

if you really want twin's then i'd go twin gt28r's. just have to make sure you get the intake ready to flow well with a plenum or something.

i've thought about boosting my g35, but then i remember its my DD.

what wheels are those on it?

lucidvtec

[QUOTE=seen4ever]if you really want twin's then i'd go twin gt28r's. just have to make sure you get the intake ready to flow well with a plenum or something.
[QUOTE]

Dunc

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by _gurusan_ &raquo;</TD></TR><TR><TD CLASS="quote">well i think two SC61's is too much.

The car has roughly 300 hp right? I suppose you just divide the HP by half....find a turbo that would be good on a 150 hp motor like the SC34 or some kind of t3/t4, and get two of them.</TD></TR></TABLE>

Soooo if you were to use that logic you would find a turbo thats good for a 150hp motor? Just about everyone's car on here started out at about 150hp, so with that logic he could just use two GT42R's That might be the most absolute badass thing ever if that happened hahahaha.

Why not a T3/T4 .54 or .57? The .57 on a 2.0liter has 20psi at 4700rpm.

Anyways, hopefully a more knowledge person on here chimes in about proper twin setups for you. That picture is probably the nicest/cleanest/sexiest G35 I have ever seen

TheShodan

iTrader: (14)

My fellow boostheads. YOU CANNOT use the same type of thinking for the VQ35DE motor as you do your typical setup. And No, you can't just "divide displacement by 2" in order to configure the potential for the VQ Motor.

For any streetable setup, 2 SC61s would be ridiculously useless and damn near impossible to fit inside the engine bay unless a LOT of it is removed.

Honestly, you'd be best off with either the Greddy 18G twin set, the T517z set, or the GT2530 twin setup due to configuration measurements that I don't feel like typing up right now. This was really just to say that you have to think outside the box to understand turboing the VQ motor, and leave Honda characteristics and thinking outside the door. Get to the VQ Forums and start off there. You're in V6 Nismo world, stop thinking like a Honda.

tony1

I used twin GT28's on the twin kit I built for the Z a couple years ago. They actually worked out great, made 450whp at 10psi and were very responsive.

gdrum

does anyone make a manifold you can buy for this car yet?

JDogg

twin gt28r's or gt25r's will work very well, the power enterprises kit has twin gt25r's. made right at 400hp on 7psi.

boostincoupe

SHOW YOUR OLD SETUP!!!

It was sick!

Vadian

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheShodan &raquo;</TD></TR><TR><TD CLASS="quote">My fellow boostheads. YOU CANNOT use the same type of thinking for the VQ35DE motor as you do your typical setup. And No, you can't just "divide displacement by 2" in order to configure the potential for the VQ Motor. </TD></TR></TABLE>

Care to elaborate more? I'm really curious as to how you map a motor for a twin turbo setup.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheShodan &raquo;</TD></TR><TR><TD CLASS="quote">For any streetable setup, 2 SC61s would be ridiculously useless and damn near impossible to fit inside the engine bay unless a LOT of it is removed.

Honestly, you'd be best off with either the Greddy 18G twin set, the T517z set, or the GT2530 twin setup due to configuration measurements that I don't feel like typing up right now. This was really just to say that you have to think outside the box to understand turboing the VQ motor, and leave Honda characteristics and thinking outside the door. Get to the VQ Forums and start off there. You're in V6 Nismo world, stop thinking like a Honda.</TD></TR></TABLE>

I read most all VQ forums and most of them are worthless; my350z.com occassionally has some good info but thats very few. Nothing like H-T; thats why I'm still here since 2001.

I'm thinking of two SC34s. Whats the closest equivalent of the GT28's in the SC series. I'm not gonna dump $2k on the GT28s just to replace later with GT35s when I build the motor. Thats what, over 4k in turbo's alone? So SC series or something similiar in price is preferred.

Hardly anyone has done a custom setup and thats exactly what I want to do. Be different. No one makes a custom manifold either.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by seen4ever &raquo;</TD></TR><TR><TD CLASS="quote">what wheels are those on it?</TD></TR></TABLE>

19" RH J8

Steve91

Since you're on the stock motor, I would just go with one of the proven TT kits on the market like the APS or Greddy. You can make 400+ rwhp at 8psi all day long.

MooreBoost

http://www.billetdesign.com

Theyre doing a TT G35 as we speak.

Sohc Driver

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tony1 &raquo;</TD></TR><TR><TD CLASS="quote">I used twin GT28's on the twin kit I built for the Z a couple years ago. They actually worked out great, made 450whp at 10psi and were very responsive.</TD></TR></TABLE>

How safe is it to boost the VQ35 Tony? I've been surfing the 350z boards and many of their stock motors are popping left and right. It seems that some of them are just running the kit as it is from the manufacturer(APS, Greddy, Vortech). I haven't found anything really useful as far as engine management for the VQs. The most popular ones I've found for the 350/G35s is the Greddy Emanage or the the APS EMS that comes with their kits. Can you enlighten me a little bit more?

Are these motors good for boost and what have you found as the best EMS setup for the VQ?

Khoi

seen4ever

the VQ motors have some weak rods though, so if you lean on them then you can have problems. there are reflashes available from altered atmosphere & technosquare. So you can drive and have them reflash the stock ECU. there is e-manage as well.

personally i'd get a greddy kit unless you really plan to go crazy with the engine. I know that ERL is about to start sleeving them, although i haven't heard of anyone cracking a sleeve yet. You mainly hear about stock engines letting go.

i have a G35. I've thought about going to boost, but then i look at how much money i dropped on all the NA honda's i've boosted and how this is a completely different platform where none of the stuff I learned about honda's applies and figured i'd just leave it stockish.

downeyballz

i saw a 350z single turbo built for top speed racing. they mounted a single turbo above the gap between the motor and firewall.

in my opnion you are better off spending your money now on a good single turbo manifold. because when its time to upgrade you will already have a good custom manifold and you will only need to buy one turbo insted of two. it would also be easier to fit under the hood

JDogg

2 gt28rs's will do 550hp w/o too much problem, gt2871 would work even better. the car i did was a 4dr and those arent as wide. gt25r was the biggest turbo we could fit. w/o serious modification

Vadian

There is a twin turbo kit (http://www.speedforceracing.co...t.php)utilizing two Turbonetics 60-1 Hi-Fi's.

How are these compared to the SC61 in regards to spool time?