Turbo Racer

Hey all,

im looking for some hp improvement (maybe 600 hp at crank) with being totally safe for internals. I need something smooth with great response and dependable for track environment. No sudden spooling at the wrong time. Main application will be for track so I will need a tune as well.

Im looking for a nice long flat power band and something without any lag.

there are so many choices out there, I’m having a hard time figuring out what to get. I’m thinking about a k-16 platform.

I am also not sure about which exhaust I want to go with. The ones I like so far in no particular order are Kline, speedtech, eb works and unobtainium. Leaning towards the first two due to price/availability.

Main in thing is that this car will likely see 30+ track days a year so these things will need to hold up to that kinda of sustained intensity.

Dock

That's a tall order.

Talk to Kevin at UMW.

Kevin

Geoff, feel free to email me or call. My Stage 2A Billet Zero Clearance turbochargers are designed for the track. You can couple that with my 3.0" race exhaust and most likely a clutch kit and you'd be set.

32krazy!

b/w efr 6258 turbos with proper tune and clutch. good enough for indy cars should be enough for yours

Stephencs601

Suspension work first. You have the power, just not the hold. Upgrade the suspension with springs, maybe lower car and see how it goes from there.

Flewis763

What else is on your car. Looks like you have no exhaust yet so is it even tuned? I'd start with exhaust, tune, intercooler and intake piping before upgrading turbos. Also fo all your suspension, brakes and wheel/tire upgrades first. The power is not what going to drop your track times until you do the rest of this first.

To answer your questions though, a billet k16 with clipped turbine wheel would be fine for your needs.

Turbo Racer

Appreciate that. Full kw gt3rs suspension with gt3rs front uprights. Also 997 gt 380 mm front and 350 mm rear rotors with calipers and 997 gt3 master cylinder. The whole suspension is being upgraded to monoball suspension with RSS parts. Including motor mounts and transmission mounts and subframe mounts. Lower control arms as well as adjustable front and rear sway bars.

agree totally. See above. I have sourced GT2 Intercoolers. I’m at this time closing a deal on a used exhaust that will breath nicely. There is a tune on the car but the owner is still out of the country. We will hopefully find out what he had and get the maps back soon. As far as wheels go I went with OZ allega.... I can’t spell that word to save my life. I picked up one of those and compared it to stock and it was day and night. I bought Nitto NT-01 all around.

Your comment on lap lap times is spot on! I’m very excited to see the improved handling characteristics!

Attaching a a few pics...





996 GT3RS front uprights

Turbo Racer

LOL. Yes it is! A lot of the fun is in the journey and reading about what folks are doing to their cars and getting and trying new things and ideas.

Flewis763

What size tires will you be running. Note for the gt3 master, if you plan on wanting psm to work at all you'll need to do add a proportioning valve on one of the lines. Something I've been working on awhile to fix the psm problem with the gt3 master and we got it to work.

On the intercoolers, I hope you arent talking 996 gt2 because they arent very good. And get 997 gt2 rs and they are decent but still way better options. I run srm 4.5 inch myself.

How about brake cooling, what have you done there?

While there are out I'd strongly suggest changing the rear subframe bushings to solid bushings.

Turbo Racer

Subframe mounts done. Not sure what version of Intercoolers they are. I figure they’ll be an upgrade from stock. Basically as I understand the brake system, getting larger rotors will dissipate more heat than the stock brake system. I think with the intercoolers and brakes I am getting an excellent price and that helps a lot since there is a lot of upgrades going on. That said, I’d be interested in hearing about what you recommend.

Dock

That's certainly true for some people, where continually modifying and/or changing OEM parts is a large piece of the ownership experience.

Flewis763

Well at min add gt3 front ducts and 997 turbo rear ducts for the brakes. They are 60 bucks total. Like said with the gt3 master you are going to have psm/abs failure issues unless you just pull the plug from the psm pump and run with no psm at all 24/7.
Like said, if they are the 996 gt2 intercoolers, they arent really much better than stock. If they are 997 gt2 rs they are much better.

Back to tire sizes. What are you running?

If doing turbos are you planning on upgrading injectors? If you arent, doing turbos is not even worth it.

Have you pinned or welded the coolant lines? Those are very very very important if it's going to be a track car.

Turbo Racer

^ yeah we pulled the engine to address everything.

Wheels and tires are on the way. Order Nitto nt01 235/40/18 and 315/30/18 wheels much lighter than stock.

Flewis763

Well I can tell ya that eventually you'll want bigger tires in the front forsure. Most of use big track setup guys run 275/35/18 up front and 335/30/18 rears.
Easier setup to fit is a 265/35 and 315/30.
You'll have understeer issues with 235s as well as abs coming in earlier.

powdrhound

You have the wrong front uprights if you are planning to use 380 brakes. Can be made to work but requires adapters. Porsche makes 380 versions of those exact uprights. You will need rear matching wheel carriers also. Without the rears, your roll centers will be completely mismatched as you can see the drastic difference in the upper and lower pick up points on the rear carriers in the pic below (RS carrier on the left, TT/GT3 on right) Do your research as it is very easy to do it wrong and spend a lot of money without seeing tangible benefits. There is a lot of misinformation out there. Good luck with the build and enjoy the car safely!