Hey Hey,

Ok i am buying a c4 vette as we speak (i live in australia so getting one sourced by a company)

Now i used to drive a r33 gts-t Skyline which is turbo, now i love v8 but nothing beats the sound of a turbo hitting full boost.

So looks like turbo is going on the vette. Now i did abit of reading etc and i know someone has already done a setup on a c4 but i cant find the link does anyone have it.

My idea at the moment is to mount the turbo in an Topmount, possible using somesort of ***-spec turbo 2 start off with small but good power-range, because there is no lag on a v8 the turbo has to have a good power band i dont want it dieing out in top rpm range or losing power after it hits full boost. Also cuz of the no lag factor a TWIN setup seem the go

Also aftermarket ecu i am alittle confused over, im not sure wat i can use as i know ***-spec system like Apexi PowerFc will not work, but i there is a system in australia called WOLF3d which works for many cars so i might have alook at that or else maybe a MOTEC. The major problem with the ecu i see is that unless i know a workshop in perth (the state i live in) can tune it, i cant get it, will a remap ecu work?

Im not sure wat base the turbo will go on yet maybe L98 or Lt1 will the engine be able to hold lets say 2 400hp turbos? with stock cam etc?

Another problem is I/C (intercooler) the vette doesnt have an open mouth style body which means the Ic which is mainly Front Mount will have to be mount on top (like calleyway twin) but i will be using something like 600x300x100 or 700x300x100 depending on the turbo size etc. I was thinking maybe a V mount but im not sure if it will fit as the c4 doesnt have much room in the engine bay and the V mount system uses big cooler pushing down from the top.

I guess the other option is custum front-bar or hood (maybe use c/f 2 reduce weight at the same time)

Now if i use a ***-spec or hybrid type cooler (aus brand) i will be able to use a ***-spec bov or a gtr bov. if i dont then im not sure if any corvette with turbo setup use bov


alone with the I/c, bov, aftermarket ecu, i will need wastegate (depend on turbo) Dump pipes and Front Pipes from turbo, custum heads to the v8, custum intake system (airfilter or airpod with Stealth ram) and a basic design to work off

Basicly, it is brainstorm time can everyone put there input in please, any little thing will help

thanks mikey


[Modified by [mikey], 3:15 PM 5/25/2004]

 

also was thinking how good would the traction be in the c4 with twin turbos? Is there any advance transion control system i would use? Maybe upgrade shocks to Coil-Overs

Im kind of side when it comes to corvette parts, so help plz


also can most of the work be done by me? is the 350 a hard engine to work on or is it pretty basic

 

also on the Electronics side of the story:
Turbo Timer - will not be a problem
Boost Controller - also shouldnt be a problem i was looking at running a HKS EVC, as it is rate as one of the best (or the best) EBC on the market, it is not setup for one type or car so should be able 2 fit onto a turbo c4 setup

i had problems with boost spiking on my r33 as i was just using a bleed value (was set to 0.5bar spiking to 0.7bar) but the EVC will hold boost and not spike so there is no dangour to blowing my engine which is some good news


[Modified by [mikey], 3:34 PM 5/25/2004]

 

On the boost side of the story stock boost of 0.5bar should be good, lets say i was to run something like a HK GT25 or N1 turbo which r both around 400hp rating, with the right amount of boost 1bar (12psi) i should be able to run stock everything in the engine that is.

Im guessing the 350chevy will be as strong or stronger than a rb25 (nissan skyline engine) as they can hold around 300to400rwhp on stock engine with boost lvl of around 12 to 16psi

 

Mikey,

Unless you are ready to drop some mad cash into having a big HP car then you are better off sticking with a vortech or Procharger kit. An 800hp car will need to have atleast $10-15,000 usd To get it to run. Do a search in the C4 forced induction on turbo and you'll get all the info you need. The stock engine can only take 6-8psi (~0.5 bar), maybe 8-10 intercooled.

 

Ah! So you live in Perth and own (or are going to own) a Corvette eh? That makes two of us.
When you get you’re wheels I recommend you join the Corvettes of W.A club.
(Contact Jacky Sunich on 9294 2883 or send her an email to sunjichzeljko@msn.com she will tell you what to do).

With regard to turbocharging an L98 I know how you feel. After seeing the club presidents Corvette Calloway thunder by at an autokhana I just can't get the idea of turbocharging a L98 out of my head. The sound is like a combination of a deep throaty V8 growl mixed with whirring hiss of a harrier jet.
I have asked about the possibilities of fitting turbo chargers but have been told that although it can be done it is very expensive because of the difficulty of routing everything though. You would think that there would be something available like say a Calloway conversion, but no such luck.
Check out this link to a post I made regarding this particular issue:
http://corvetteactioncenter.com/foru...ad.php?t=47558

And heres a link to the only supercharger I know of designed for a L98 engine:
http://www.westol.com/lpavtis/vette1.htm

Cheers

 

i went down the other day to all america, and the guy told me that i can pick up a LHD 88 vette for around 18k, which i am happy with that price, i really wanted a 91 or 92 becuase of the 6spd but due to the new import laws doesnt look like that will happen

Where did u pick ur corvette up from?

thanks Mike

 

Same place as you. All American. I paid 20k for my 87. I think it costed more because it was towards the end of the year and everything becomes more expensive at that time. But I couldnt wait.

 

'

cool now i just have to sell my r33 skyline and i can grab the vette

 

Good on ya.
You wont look back.
P.S If you are having any trouble finding a full comprehenisve insurance policy just try SGIO. I should warn you though that even though their policy is the best value for money IMO, remember that the premiums for a car like this will still be in the 4 digit per annum figure. That is the only expensive thing about owning a Corvette in my experance.
Also ask Wayne about the condition of the digital dash cluster. Getting those things properly repaired is VERY difficult.
Oh and dont forget to join the club.