dixy2k

The kompressor (s/c) eats up a lot of power from the M113 engine. Any s/c has some parasitic loss.
Two small turbines would get rid of the "turbo lag" plus they will provide nice top RPM power as the kopressor fails to do.

I was thinking if it would be feasible to have mounted the two turbos vs swapping in a V12 TT (S600 or S65).
The intercooler system is already in place, but needs some mods for the twin turbo setup, a modified intake manifold and who knows what else.

It should probably be called VRP900.

vrus

You will get your wish because we are slapping 2 turbos on the car along with the kompressor..

jangy

SWEET!!

Havoc

Jangy, did Victor misspeak or are you... ???
It doesn't matter dude...with 2 turbos, 1 kompressor, and a ton of nitro, you still can't beat a stock Z06. Imagine that!


Wow! That's a great concept!

jangy

No, he wasn't speaking to me. I've always considered the idea, but VRP and I haven't talked. If Vadim wants my car for test fitting, etc. he knows he can have it anytime. Other than that, I am pretty excited to get my 500 to the floor and see how it feels and shows at the track.

Havoc

Yeah dude, I was about to say.."well that didn't take long!"
But I agree, you don't need an addition of two turbos to walk a Z06. LOL!

Like always, keep us posted with new mods, kills and your track results.

dixy2k

Lancia Delta Integrale deja vu.

I love that kind of set up.
The kompressor covers the bottom end and the turbos the high end of the power band.
Would the old M113 take all that abuse from the extra boost?

jangy

I really don't see why not. It isn't really that much boost in the first place and that block is pretty solid. I'm getting more curious about this. Is there room for the turbos under the hood?

ChicagoX

The torque curve with compound boost can be made to look just like ours - nice and flat, just a lot more of it.

As long as the boost from the turbos is fairly low (~4-8 psi) the intake charge shouldn't heat up that much more than stock+pulley.

You give up max power capability over twins alone, but the down-low torque would be sickening.

Havoc

True, I agree, but you don't have to sacrifice max power capability over twins turbos alone if you create a High Boost Twincharge System where the Kompressor Clutch engages at 3,500 RPMs to “free up” the blower from the crank to achieve max power capability from the high boosted turbos. This twincharge setup produces more power compared to having the blower always “On”.

dixy2k

If the twin turbos are big in size they would provide boost starting at higher RPM. Maybe it would be nice to start around 4500-5000 RPM where the kompressor is starting to die out, therefore continuing to provide boost and continue with an ascending power band towards the redline.

It would be nice to find out what is the drop in boost provided by the kmpressor at higher RPM and compensate for the drop with an equivalent boost from the turbos.

I am not sure how and where the TT set up would fit inside the engine compartment.
But V12TT swaps were made so I am sure there is some room left to add TT's.

Havoc

Big turbos can be adjusted to provide mild boost at a lower RPM. Since turbos provide more HP than blowers at the same boost level, a smooth transition would be at a lower RPM, especially if you set the turbos to produce more boost (22lbs) compared to the blower (14lbs).
But don't quote me, Havoc doesn't know what he's taking about...

dixy2k

Wouldn't it be too complicated to keep the kompressor in place along with the TT?
It may save a little weight too if taken out of the picture.

Havoc

It maybe a little complicated, but a well tuned High Boost Twincharge System is worth the time, effort and cost.
The added weight becomes a non-issue when those Huge Turbos kick in right after the Kompressor and all Hell breaks loose!

Don't mean to stay off topic Vadim and Jangy..but you know.

ChicagoX

That would be about 57 psi at the motor.

ChicagoX

I don't think you would need high-boost.

Running 12 psi through the blower gives you a pressure ratio of 1.81/1

An additional 8 psi from a turbo system gives you a pressure ratio of 1.54/1

((1.81 * 1.54)-1)/14.7 = 26.27 psi (under 2 BAR)

Havoc

Negative, under this system the Kompressor turns "Off" at 3,500 RPMs and is not producing any boost, allowing only the turbos to provide boost, which provide more HP at a higher RPM.

ChicagoX

NP if you disconnect the Kompressor, but you then run into pushing the air through the SC, unless a bypass is employed.

Methinks low-boost or TT would be a better setup.

Havoc

You are correct and I was wrong when I wrote that the blower is producing no boost when it is free from the crank (this is Not a good time for me to write if you know what I mean). I meant to say that 22lbs of boost would be the ideal amount of total boost from both the TTs and the blower.
My main point is from what I have seen and read about twincharging, the systems that employ either a bypass or free up the blower from the crank produces insane results.
I agree, TTs is the easy way to go but Havoc likes his Kompressor.

dixy2k

Ford GT has a similar setup as E55, a kompressor and water to air IC.

Follow this link to see what happened when the S/C was swapped for TT (twin turbo). 1012 rwhp.

http://www.modifiedcars.com/covercar.asp?id=21

GT engine setup is probably 99% identical to that of the E55.

http://www.modifiedcars.com/covercar.asp?id=21

ChicagoX

No reason not to. Insta-torque (patent pending) is addictive.

If you want to run about ~22 psi total, you would only need about 6 out of the turbos. Nothing wrong with a completely flat torque curve, 100-200 hp higher than Kompressor alone, minimal increase in adiabatic heating.

Sorry for the OT, folks - I'm off to self-imposed punishment of cleaning the garage.

Havoc

Any luck on getting your car to the track or is it still at the shop?
Any problems with too much wheel spin on launch now having 505 rwhp?

Yep, and installing new intercoolers would help bring that adiabatic heating down some and allow you to increase the boost and HP a little.
Good luck with that Insta-punishment (patent pending) of cleaning the garage!

jangy

No feedback, yet. It is going from VRP to HMS today for some cosmetic cleanup and then I will be set to play. I have a Willow day setup with Symbolic but not sure who is going or when.

Quaife is next. I am worried about laying down the power in turns

MJ50

VR600 is on my wish list...