Yet Another 68mm Billet VTG Build -- GT2
#1
Yet Another 68mm Billet VTG Build -- GT2
We normally have a constant stock of 65mm and 68mm Billet VTG turbos for the 997TT in order to reduce wait times for our customers. Well now GT2 owners can also take advantage of our "no-wait" turbo upgrades, since we're now stocking our 68mm GT2 Billet VTG upgrade as well!
So, on to the fun stuff. After spending a few weeks in his 997.1 Turbo Cab equipped with our full 68mm VTG turbo package, a customer of ours decided it was time to bring in his GT2 for some upgrades. Well....a few upgrades quickly turned into a full build! You can't have a tiptronic turbo cab that's faster then your GT2, right?? Everyone should have 2 700 whp 997's.
So here she is after arrival yesterday. The build will include our 68mm Billet VTG Turbo's, Champion exhaust manifolds, intercoolers, carbon y-pipe, GIAC programming, Tubi race exhaust, etc etc. Based on our last GT2 upgrade which used our 65mm Billet turbos (which made 688whp), we're expecting somewhere north of 700whp for this one.
Stay tuned, I'll update this post regularly with pictures, info, and dyno sheets as soon as I have them.


OK...here's a quick update. We strapped the GT2 to the dyno this afternoon to get some baseline numbers. Results were extremely consistent and pretty impressive considering this car is completely stock. No chip, no exhaust, nothing. Here's a quick video and dyno sheet.
Engine's being dropped right now...
YouTube - Porsche GT2 Champion Motorsport 68mm Billet Turbocharger Build | Baseline Dyno Numbers

And......about an hour and a half later, engine's out.
Now the real fun begins. Stock parts come off to make room for all the new go-fast stuff.



Here's another quick update guys.
Factory clutch and flywheel are out, and in goes the new Sachs setup.
Updates are also posted on our new Champion Motorsport blog....The Werkshop


Couple more updates:
68mm Billet Turbos are on and ready to go. In this pic you can really see one of the best things about our billet turbos. They re-use all the factory lines, so installation is a direct bolt-on.

Here's our beautiful carbon plenum with 82mm TB installed:

And here.....The piéce de resistance...

OK, engine's back in and hardware installation is complete. Now it's just time to flash our custom GIAC/CMS 68mm turbo software and see the results. Before we do that, we thought we'd make an interesting comparison between the stock GT2 dyno results and the big turbo package WITHOUT the upgraded software. As you can see, we picked up over 130 WHEEL horsepower from the hardware alone, without any programming! Tq drops off a little bit in the middle of the range due to the factory tq-limiter, but the new GIAC software will take care of that.
I can hardly wait to see what this baby puts down once the flash is installed....stay tuned!!

OK....so here's another update. It seems it's back to the drawing board for another clutch option for this build. Initially we thought the Sachs 764 would hold, but the power output of this car is pleasantly exceeding our expectations by a lot! As you can see from the graph below, the clutch gives out right around 5600 rpm's, which is at 640 lb/ft of tq. Interestingly, the Sachs 764 kit is rated at 650 lb/ft of tq as it's limit....so it's definitely not going to be enough for this package. You'll also notice a dip at around 3500rpm....that's not the clutch slipping, but at this point we'd already done a couple runs with the clutch slipping and were trying to feather the throttle and build tq a little slower in the run to see if it would still slip at the same point, which it did.
That being said....735 WHEEL HP with a slipping clutch is nothing to shake a stick at.
We've got some plans for another clutch option that will hold the power and keep drivability. I'll get some more info on that as soon as I can.

It's update time on our yellow GT2.
So...after a couple weeks in the car at roughly 725 rwhp, the GT2 is back and ready to go to the next level. We'll be increasing to a 3.8L with custom pistons, rods, bearings, head-work, and larger intake valves. We'll also have some VERY VERY trick new carbon fiber parts that we'll be debuting on this car.
BTW...this car will retain our 68mm billet VTG turbochargers...
Here's a couple pictures as tear-down of the engine begins. It will be a couple weeks before we can put it back together since we're waiting on some parts, and there's a few others that need to be made, but I'll keep you guys updated as much as I can. Enjoy...



And just to give you an idea of what I mean by "trick new carbon fiber parts" here's a picture of the molds we now will be using to produce our carbon fiber turbo inlet pipes. The new machine prints a 3-dimensional mold that is then wrapped in carbon fiber to the shape of the finished part. Then once the carbon has cured, the part is immersed in a water-based solution that dissolves the mold, leaving the finished part. The benefit here is faster production times, and no more seams. A whole new world of possibilities for us in carbon production...





Here's a picture of some more goodies that are in store for this monster GT2. All that power is going to have to get to the wheels without breaking things.
So, on to the fun stuff. After spending a few weeks in his 997.1 Turbo Cab equipped with our full 68mm VTG turbo package, a customer of ours decided it was time to bring in his GT2 for some upgrades. Well....a few upgrades quickly turned into a full build! You can't have a tiptronic turbo cab that's faster then your GT2, right?? Everyone should have 2 700 whp 997's.

So here she is after arrival yesterday. The build will include our 68mm Billet VTG Turbo's, Champion exhaust manifolds, intercoolers, carbon y-pipe, GIAC programming, Tubi race exhaust, etc etc. Based on our last GT2 upgrade which used our 65mm Billet turbos (which made 688whp), we're expecting somewhere north of 700whp for this one.

Stay tuned, I'll update this post regularly with pictures, info, and dyno sheets as soon as I have them.


OK...here's a quick update. We strapped the GT2 to the dyno this afternoon to get some baseline numbers. Results were extremely consistent and pretty impressive considering this car is completely stock. No chip, no exhaust, nothing. Here's a quick video and dyno sheet.
Engine's being dropped right now...

YouTube - Porsche GT2 Champion Motorsport 68mm Billet Turbocharger Build | Baseline Dyno Numbers

And......about an hour and a half later, engine's out.
Now the real fun begins. Stock parts come off to make room for all the new go-fast stuff.



Here's another quick update guys.
Factory clutch and flywheel are out, and in goes the new Sachs setup.

Updates are also posted on our new Champion Motorsport blog....The Werkshop


Couple more updates:
68mm Billet Turbos are on and ready to go. In this pic you can really see one of the best things about our billet turbos. They re-use all the factory lines, so installation is a direct bolt-on.


Here's our beautiful carbon plenum with 82mm TB installed:

And here.....The piéce de resistance...


OK, engine's back in and hardware installation is complete. Now it's just time to flash our custom GIAC/CMS 68mm turbo software and see the results. Before we do that, we thought we'd make an interesting comparison between the stock GT2 dyno results and the big turbo package WITHOUT the upgraded software. As you can see, we picked up over 130 WHEEL horsepower from the hardware alone, without any programming! Tq drops off a little bit in the middle of the range due to the factory tq-limiter, but the new GIAC software will take care of that.

I can hardly wait to see what this baby puts down once the flash is installed....stay tuned!!

OK....so here's another update. It seems it's back to the drawing board for another clutch option for this build. Initially we thought the Sachs 764 would hold, but the power output of this car is pleasantly exceeding our expectations by a lot! As you can see from the graph below, the clutch gives out right around 5600 rpm's, which is at 640 lb/ft of tq. Interestingly, the Sachs 764 kit is rated at 650 lb/ft of tq as it's limit....so it's definitely not going to be enough for this package. You'll also notice a dip at around 3500rpm....that's not the clutch slipping, but at this point we'd already done a couple runs with the clutch slipping and were trying to feather the throttle and build tq a little slower in the run to see if it would still slip at the same point, which it did.
That being said....735 WHEEL HP with a slipping clutch is nothing to shake a stick at.

We've got some plans for another clutch option that will hold the power and keep drivability. I'll get some more info on that as soon as I can.

It's update time on our yellow GT2.

So...after a couple weeks in the car at roughly 725 rwhp, the GT2 is back and ready to go to the next level. We'll be increasing to a 3.8L with custom pistons, rods, bearings, head-work, and larger intake valves. We'll also have some VERY VERY trick new carbon fiber parts that we'll be debuting on this car.

BTW...this car will retain our 68mm billet VTG turbochargers...
Here's a couple pictures as tear-down of the engine begins. It will be a couple weeks before we can put it back together since we're waiting on some parts, and there's a few others that need to be made, but I'll keep you guys updated as much as I can. Enjoy...



And just to give you an idea of what I mean by "trick new carbon fiber parts" here's a picture of the molds we now will be using to produce our carbon fiber turbo inlet pipes. The new machine prints a 3-dimensional mold that is then wrapped in carbon fiber to the shape of the finished part. Then once the carbon has cured, the part is immersed in a water-based solution that dissolves the mold, leaving the finished part. The benefit here is faster production times, and no more seams. A whole new world of possibilities for us in carbon production...






Here's a picture of some more goodies that are in store for this monster GT2. All that power is going to have to get to the wheels without breaking things.

Last edited by Phil@ChampionMotorsport; Apr 4, 2011 at 03:36 PM.
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