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Can a stock motor/fuel system run 6psi?

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Old Mar 11, 2007 | 09:58 PM
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Default Can a stock motor/fuel system run 6psi?

Hey everyone, im thinking about boosting my car by myself by running a single turbo in the back of the car, i've seen alot of american cars with turbos run that way but never on a Z, but i was wondering how many pounds of boost the stock fuel system can run? will i really need bigger injectors if im running like 4-5 psi max? i thought about doing this because most common N/A mods will run you over 2 grand and still not put you over 300 whp or 253 at that matter . 5 psi should make it fly. i could buy the parts and do the work myself, so all i would really need is a turbo, manifold adapter, waste gate, cheap piggy back(emanage), piping, and maybe oil lines and an adapter plate, unless someone can tell me where to find a turbo that doesn't need oil. Any advise is appreciated, i don't see why it wouldn't work but tell me what you guys think.
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Old Mar 11, 2007 | 10:04 PM
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no, no and more no. save up and try again. go cheap with F/I and watch your engine go kaboom. cheap piggy back? rofl, thats the worst of all. there is no cheap way, just some less expensive ways to go F/I.
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Old Mar 12, 2007 | 04:17 AM
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Well the Greddy system runs with emanage at those boost levels, and some have ran it but maybe add a walbro to be safe and take a couple of degrees out with a consult or cypher.

But good luck finding space under the car to put a turbo on the back plus run the piping.
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Old Mar 12, 2007 | 04:42 AM
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STS is making a rear mounted turbo kit for the Z. I believe they plan to release it soon. Check it out http://www.ststurbo.com
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Old Mar 12, 2007 | 05:40 AM
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please save up a little more and don't buy the STS kit
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Old Mar 12, 2007 | 06:11 AM
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more research nidded ... budget of 10k needed for WTF moments
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Old Mar 12, 2007 | 07:33 AM
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Originally Posted by ZU L8R
please save up a little more and don't buy the STS kit
Why would you say this when the kit hasnt been released yet? We dont have dyno numbers, boost graphs (for the spool haters) or track times. I dont think you made a fair statement.
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Old Mar 12, 2007 | 07:41 AM
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Originally Posted by Alberto
Why would you say this when the kit hasnt been released yet? We dont have dyno numbers, boost graphs (for the spool haters) or track times. I dont think you made a fair statement.
Cause I've seen the results on other cars.
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Old Mar 12, 2007 | 07:56 AM
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I guess a corvett that does a 7.6 1/4 with a rear turbo is not fast enough?
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Old Mar 12, 2007 | 07:58 AM
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7.6 1/4 ?????
I want to see some proof but for now I'm calling BS!
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Old Mar 12, 2007 | 10:56 AM
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Originally Posted by ZU L8R
Cause I've seen the results on other cars.
Ive seen successful STS kits, what is your beef with them? Going into more detail would help us all understand your POV
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Old Mar 12, 2007 | 12:35 PM
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http://forums.corvetteforum.com/show....php?t=1493314

Guess i was off its like 7.9 in the 1/4
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Old Mar 12, 2007 | 12:47 PM
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Originally Posted by Alberto
Ive seen successful STS kits, what is your beef with them? Going into more detail would help us all understand your POV


Sucking up rain, snow, mud and rocks is just the beginning of the shortcomings of an STS kit.Having a rear mounted turbo system also means you lose alot of heat(energy) which drives the turbo.So spool-up tends to be alot later then it would with a conventional turbo system.Low mounted turbos requires the use of a sump and pump (if you do it the right way) and these add to the complexitiy of the system.Then there is the long path for the piping to run from the turbo, to the intercooler (if supplied) and then finally to the intake manifold which adds even more to the lag.Ofcourse these are just some of the shrotcomings I have thought of in the last minute. I am sure there are others to take into consideration.
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Old Mar 12, 2007 | 02:00 PM
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Originally Posted by rocks
http://forums.corvetteforum.com/show....php?t=1493314

Guess i was off its like 7.9 in the 1/4
It seems that Z06 has a little more done to it:

Custom Vette Doctors 422 cubic inch LS2 stroker with a single rear mounted 106 mm turbo. Heads: C5R Racing Intake Kinsler Cam Comp Solid Roller, Headers: American Racing Headers Turbo Plumbing, Power Adder: Custom rear mounted 106mm turbo by Turbonetics Transmission Sullivan Motor Sports Power Glide Converter Neil Chance Rear-end 9” Chassis Custom Torque Arm Setup Fuel Injection DFI Gen7 Ignition MSD Brakes Strange Engineering Wheels Weld WheelsIt has a complete NHRA certified full cage (to 7.50), safety equipment, and parachute that is also completely street legal.

The STS turbos are probably fine on V8's with lots of torque and the STS puts them over the top and lag is probably not much of an issue but on our V6's it will probably be felt much more as mentioned.
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Old Mar 12, 2007 | 02:05 PM
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well with the exhaust removed there's a huge cavity back there, i was thinking about putting it kinda tucked up inside, because my car sits really low. im seriously thinking about trying it.....whats the worst that could happed
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Old Mar 12, 2007 | 02:10 PM
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Originally Posted by sk26dett
whats the worst that could happed
You **** off Chuck Norris..
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Old Mar 12, 2007 | 03:50 PM
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If you are willing to do S/C, you should be able to get away with 7psi.

I am at 6 psi, 2000 miles now, runs perfect on stock internals. Knock on wood.
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Old Mar 12, 2007 | 11:29 PM
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imo, There's no need for the turbos to be on the back of the Z.
iono but that teaser video sounded like it had ppretty bad lag. right after if got full boost, it was about to hit redline. meh
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Old Mar 13, 2007 | 03:10 AM
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Originally Posted by ZU L8R
please save up a little more and don't buy the STS kit
+1
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Old Mar 13, 2007 | 08:08 AM
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Please do try it out, don't let these guys sway you from your decision, i enjoy reading detonation stories and I'd love to know if a home-made turbo system works!
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