Wert842

iTrader: (3)

This thing looks like its gonna be a monster. I want one for my coby!

TWM Performance

iTrader: (1)

This build is awesome!!

40rty

This will definitely be top Kappa in engineering and Power.

Fastgti69

This setup is unreal. compounding an LNF you guys have *****. This car is easily 1000whp capable. SICK!

SKY888

LIPSTICK is all strapped-up heading to BTF Racing for completion and dyno-tuning.






photo taken by Median Magazine






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Thanks!

07MetallicSC

iTrader: (16)

when do you plan to have numbers?

ei3dag3

iTrader: (5)

looks like its time for a wire tuck
amazing progress.

cmiller8006

iTrader: (3)

Looking good.

ford

I would like to see 700hp out of this build but i have my reservations. Good luck man!

SKY888

we are hoping by end of July 2012.

but we'll se.....

what's your reservations bro?

Matt M

He's just saying that you have a huge challenge ahead of you getting it all to work right. ...but that's the fun part, right?

cmiller8006

iTrader: (3)

One thing. Won't once the gt42 gets flowing the gt28 become a hinderence since thats like a 3 inch compressor outlet and the 28 is like a 2 inch or so. I have been thinking about this for awhile now.

SKY888

got it!

it's been a huge challenge since the beginning, actually.

so I guess, I'm immuned now with the upcoming headaches

SKY888

yeah, the 3" piping will taper off to 2.25"

the small turbo will not be a hindrance.

that's always one the first questions of most people about the compound set-up.

i think we discussed about this during the first few pages of this thread already.

The small turbo is being forced-fed with already compressed air from big turbo

cubaniche

iTrader: (1)

Hey Sky, you mind if I ask an off topic question?

You mind sharing the specs of those bolts you used for the VC? I need to replace mine and Im having trouble finding the correct spec and I dont want to pay the dealer 5 bucks a bolt

You can PM me if you'd like.

SKY888

VC?

v-band clamps?

cubaniche

iTrader: (1)

ValveCover

SKY888

valve cover....duh!


bro, I believe SMG used just the stock bolts for the stock cover. Fred is out for a week for a vacation. I'll try to ask him when he comes back

Matt M

When setting up a turbo or turbos, whatever size is enough, will always be enough, unless you change the VE of the motor. As you add a second stage, you are just turbocharging the system that was already there. In other words, if the GT28 works well on the 2.0, then adding another turbo system on the outside of the system that is already there won't change that. Your example would be like asking if you need to replace your throttle body with a larger one when adding a turbo. Of course the answer is no, because the air flowing through the throttle body will be compressed and therefore it's flow potential is increased.

Try to think of compound turbocharging as taking an engine that is already turbocharged and then simply turbocharging what was already there. The larger turbo is completely on the outside of the system that was already in place for this reason. That's why you don't need to change what is already there.

Terminator2

One thing I would worry about is to make sure the MAF is in a big piece of pipe because if it sees much over 11500 hz the ECM tends to get pissed and it responds by slamming the throttle shut.

Matt M

It does? Is that a Kappa specific issue? We have never had that problem on LNF Cobalts.

Omiotek

iTrader: (2)

yep the kappas dont like the bigger intakes but it can be worked with.

40rty

If you ventured more into the Kappa world you would know this, lol. You guys set records with FWD Cobalts, right? Imagine the times a Kappa(RWD LNF) could do! I'm seriously surprised you guys haven't bothered with much besides downpipes and other things.

Matt M

lol, we only have so much time in a day, and so many days. We do what we can.

Omiotek

iTrader: (2)

this but yes its an issue. cobalts came with a lot more to work with then the kappas.