550whp on a vortech is theoritical at this point. It involves replacing the blower and intercooler and a built engine and some sort of custom pulley/belt setup

 

Any FI can potentially blow the motor, I know that much. So the issue is summoning enough courage to actually go for it. And if I do, it will be a Vortech out of financial reason, not engine safety.

 

Do we all think that this sounds good?


1) Vortech S/C Full Kit Polished
2) 3.12 pulley
3) Gauges- Defi Boost, Wideband Af, Fuel Pressure. That it?
4) Return Fuel System-CJM or AAm Stage 1.
5) Crawford High Flow Cats
6) HKS Ti High Power Exhaust
7) Upgrade Belt-Gates 93"
8) 550c Injectors-Rc
9) Walbro Fuel Pump 255
10) SS box
11) One Step Clolder Spark Plugs. Gapped to?
12) JWT oil Pan spacer
13) 5/16 Motordyne Spacer
14) Maybe cams

 

I'm not sure the size, but the full kit comes with the walbro fuel pump. SS box also included, but maybe you are just listing to show people what you have. I think you can do all of this for under 10K now (not including cams). good luck. Mine still sounds like a p.o.s. at idle.

 

I am headed to look at a used Vortech Kit today.

 

Well I went to talk to a owner of a tuner shop and looked at a used G35 Vortech full kit. The kit was in great condition and everything seems to be complete. He told me that the kit should bolt right up with no mods to the kit.

He also told me to skip the fuel system and go with the Vortech fuel system and stock injectors. He said the stock injectors could handle over 400whp and be safe. IS THIS TRUE?

He suggested a boost, water temp, and oil temp gauges and an oil cooler.

He is really pushing JWT cams (I am getting) but I would think that I should also change the injectors to 550cc. What should I do? I wanna run the 3.12 pulley.

 

Do you know how many miles on the S/C? 550 Injectors seem like an overkill with the 3.12 pulley+ cams.. Also I would suggest a fuel gauge...If you go oil cooler consider replacing it's gauge with fuel..

 

i think 550 injectors is overkill too. but what the F do i know?

 

my 440 injectors were maxed out on my car with cams etc. Wasn't until I went to 550's that I had headroom for A/F tuning above 5500 rpms - that was with the 3.12 pulley

with the 2.87 pulley, I apparently am needing 650 injectors


guys running the 2.87 pulley without cams run with the 550 injectors at 12 lbs of boost.

My car is running a hair over 9 lbs of boost with the 2.87 pulley. I think cams do a lot more than people give credit for - especially the JWT where they breath better up high

 

Yes you can run the vortech kit and get 400whp. I would recommend you get an air fuel gauge and keep an eye on things.
Now to get 400whp safely 440 injectors with an upgraded pump and return line is a nice idea. I just don’t like the idea of depending on the stock injectors to run at max all the time. But that’s just me! Also by having an upgraded fuel system you can change the pulley size without concern. Just re tune your car. Right now I am running an 11lb pulley with a waste gate set at 9lbs wastage to get more torque at lower rpms.

Hope this helps, and good luck with your kit.
60k miles are running on my vortech kit

 

+1
JWT CAMS did alot for my numbers. Been very happy with the results.

 

Hoping for some more quality input this week-end on this thread. I am planning on making most of my purchases next week. So keep the bring on the final thoughts before I lose my ****. Thanks guys.

 

I just got my car back today from a few more addtions and comparing to what your asking I did a comparision to help you out a little;

1) Vortech S/C Full Kit Polished Same as mine
2) 3.12 pulley Same as you
3) Gauges- Defi Boost, Wideband Af, Fuel Pressure. That it? Almost same
4) Return Fuel System-CJM or AAm Stage 1. I have the AAM stage 1
5) Crawford High Flow Cats Same as mine
6) HKS Ti High Power Exhaust I have the Fujitsubo plus the y-pipe
7) Upgrade Belt-Gates 93" Same as mine
8) 550c Injectors-Rc Same as mine
9) Walbro Fuel Pump 255 Same as mine
10) SS box I have the Unichip
11) One Step Clolder Spark Plugs. Gapped to? Same as mine
12) JWT oil Pan spacer Don't have
13) 5/16 Motordyne Spacer I have the Crawford Plenum
14) Maybe cams I have JWT cams

I also have DC headers and VB and TC upgrade. Making 440rwhp at 9psi and will def. get the built motor soon as I am planning on moving to the T-trim and 2.87 pulley.

 

I would suggest getting the full used kit [ cheaper ] . Run it for a while with the 3.12 pulley ...tuned of course . Then , if you deside to go to the 2.87 you can add the bigger injectors and the fuel system and in tank pump .
You'll extra cash for tuning , gauges of your choice . Changing every thing at once can cause alot of hassle if you have problems . It's tough to find the problem when you have change so much at once

 

Can you run the 3.12 pulley w/ the stock injectors and fuel pump? Or should you go to 440's or at least to 380's if you go to the 3.12?

What about the belt? Do you need a different belt going to the 3.12?

 

You can run the 3.12 with the stock pump and injectors because I did for over a year and yes you do need a new belt for the 3.12 pulley.

 

Well tommorow I head off to buy the used Polished Vortech Full kit and Nismo Headers along with a set of cams. At this time I will not be adding injectors or a fuel return system. I am buying this kit from a reputable shop and I was wondering if you guys have any input. The kit has about 9000 miles on it I was told and that it came off of a G35. Should the kit bolt right up with no mods? Do you think I will have to order any seals or things from Vortech that are not re-usable? I also hope he has the directions and a few hints. Someone really needs to do a Complete Vortech DIY and one for Cams. Peace and wish me luck.

 

BTW:Used Full Polished Kit w/ Nismo Headers for $4000. Good Price?

 

Sounds about right.

 

CONGRATS MAN!

I just sent you PM with my cell phone.

I can swing by the shop around 430-5pm if you wanna chat.