Antonio is looking for 600+, so not QUITE enough. Compounds is a very proven way of making power though.

 

Yeah if you have the room in your enigne bay.

 

sub'd

 

There is always room

Really, there is not a whole lot of room on the Sky's, but enough to make this happen.

 

yeah you can always make room. lol! I just dont know where there would be room on a cobalt. lol!

 

Oh, it could be done. I know its a tight fit for our 5557 kit, but, I think if we moved the turbo over and up a bit, using a small turbo like the GT28, the put the primary (large) charger on the bottom and moved over some too... I think it would work!

But, 600whp on fwd is pretty pointless, unless its a track car only. Antonio's Sky is going to be a DD, which is the best part of the build!

 

Yeah it will be sweet for sure! and yeah your right i guess. there is alot of room under our turbo... But on a FWD it would just mean traction loss. lol! I like the idea of the VGT, just waiting for Borg Warners to come out. Still trying to research the whole VGT thing.

 

VGT is a wonderful thing. I am running one on my diesel project. Shooting for about 400whp and 800 ft lbs of tq. Only thing is getting the VGT activation tuned. It will be easier on the diesel, since there is no tuning of the motor, since all the fueling is mechanical. I just tune the pump and go. I will run mine by a pneumatic cylinder, referenced to boost pressure, at first, then see how it works. I have a couple other ideas to try though, if that doesnt work as planned.

I thought about putting the turbo on the Cobalt, but it would have been a pain in the ****. Still thinking about putting one on my next project though (road race Civic). Only issue is, the turbo itself is so DANG heavy at about 65 lbs.

 

Wow! yeah they seem pretty sweet. I didnt know they weighed that much tho. thats a crapton of added weight! I havent heard much on the Borg warner one, i wonder if it will weight alot? They are doing a pretty good job at keeping it a secret i guess, only things ive heard are from a few kids at my school.

 

Well, the reason the Holset one weighs a ton is because of the exhaust housing. Its technically a VNT turbo (variable nozzle technology), and the exhaust housing can go from like 3 cm^3 to 25 cm^3 (very small to VERY large). So, its a huge exhaust housing. I would love to put one on a Cobalt though, and see what it would do.

 

sub'd

 

Sky any updates on ur build?

 

Race gas or E-85 and 30 psi a S-256 should be close 600 crank hp easily. If he is looking for 600 whp that might be a little out of reach for the S-256.

 

IDK if he has E85 readily available. Plus, this way he can up the power even more. I think (correct me if I am wrong Antonio) he is doing this more for a show factor than a pure power factor. Sure he wants power too, but nothing screams bling like having the only TT sky.

 

The 256 could do 600whp on E85 without too much difficulty.(aside from fuel system mods) Gas would be a 30-60whp penalty at that level, depending on octane.

 

E85 is not readily available in my area, unfortunately.


Anyways, I want it all! Show and Go car! Bragging rights! lol

spool time of gt35 is not bad............but I want to eliminate the lag big time. A GT28 spool time will be a lot nicer.....with a GT40 power up top....will be a nice combo

I want the car to be very responsive on the streets............and also be applicable to different track events (drag/hpde/time attack/solo)

kinda greedy....and ambitious! lol

 

unfortunately, not much updates to say....

SMG is finishing up with the tuning of Project Scarab.

I'm not in a hurry since winter is coming anyways. Car will be at least away from snow for the first time, and will be under a covered garage. I have been using the car for the past two years during winter.

We are expecting to finish the project by March 2011 *crossing fingers*

 

Hey Sky,

Not sure if you remember me but we spoke on the phone once. I was wanting to get a k04 off of you. Well, turns out I didn't cause I decided to part with my POS VW gli that I had and got a Sky. I'm just wanting to see if you wouldn't mind me doing the same thing to my Sky( little different setup). Just got my 75k bonus and though most is going to a house I did reserve 23k for a compound setup. I'm wanting to go with the recipe you have of a GT28+GT40 but the GT28 will be the one that BNR is currently making so I keep the Dual scroll setup. So with your blessing....please? Best of wishes to your project and I will be watching closely. Take care bro.



Fortunato(aka 40rty)

 

hey fortunato! sup bro?

yeah, its fine bro. As long as I'm the first one........its cool! Everybody else can follow......

tuning will be a bitc h ........

so we'll see what happens...

 

Don't think of it as tuning for two turbos. Think of it as tuning only one and it'll help.

 

I agree- almost like tuning the small turbo motor, then treating the system like it was NA and turboing it all over again.

 

Is it true that with a compound setup heat issues are known fact?

 

having two turbos under the hood will definitely increase some heat issues........

but you can always combat it by using Swaintech ceramic coating and DEI titanium wraps (turbos, manifold, pipes).............and lots of heat barriers to make sure you won't be melting other delicate parts

 

other cars with compound turbo set-ups were tuned "easier" since they have all available software support.......

with HPTuner software, fuel pressure table and others are not cracked yet.

I am not even sure if Trifecta/HPT combo tune will be enough for this set-up.
I might even use microsquirt and secondary fuel rail for extra fuel delivery

Im on unchartered territory.


I talked to Marc with the compound turbo set-up from Boost logic a month ago.........after upgrading to bigger turbos.........they're now having problems with the tune. The previous set-up ran better.

Tuning will be a Bitc h....

but hopefully it will not be as bad when we get to that point....

 

Well, there is always Motec, haha. Least, I think it was Motec that has a DI compatible standalone.

Just make sure to get the secondary injectors angled into the intake ports, and you will be peachy.