Thanks to all of you. Since i do not live in the US, i need to rebuild my k16 over here. I still need to find out, what suits me best. for the racettack i need great excelleration. Top end isnt so important to me. So to lose spool or getting more lag through a clipped wheel isnt my favorite built. if i can handle the back pressure problem with 100 cell cats, i would prefer this route.

 

A nice K16 upgrade will net you great results for road course use. There are a few different routes you can go. From 1624 to the latest technology billet compressors and a few things in between. Feel free to send me an email and I'll help you find the greatest way to get this sorted in Europe. I enjoyed many awesome years of road course use in my 996 turbo on a K16 framed upgrade making between 650 and 700hp. I feel like it's the perfect type of power delivery. Like a V-8 engine!

My results always guaranteed!

 

Your not going to get to 700 hp crank on any k16 billet. The restriction is the hotside so it doesn't matter what fancy compressor you stuff on the front end. Heck , you can put a 30r compressor and you still will go slow.
It's about a balance between the turbine and compressor wheels and not about how big it is.
Our set up ran a record 60 to 130 mph at 5.86 seconds. K16 billets, injectors, out 3.5" ics and voile other goodies along with customs tuning.
The key is also on pressure testing and fixing all the issues.
Good luck
Markski

 

Deejay I agree with you on most stuff but this is not true. A k16 turbine is very large and is easily capable of flowing 700whp+ much less 700 crank hp through a catless exhaust system. It's done all the time on even smaller 3 liter motors like the 6g72 or 2.6 liter like the rb26 using td05 size turbine wheels which are the exact same size as the k16 turbine.

Might not want to do it on stock rods because of the torque spike but it can easily be done.

 

not on a 996tt I guarantee it. Just like a 3582R can make 650whp at 35 psi on a 2L Evo yet 2 of them on a p car on on 3.6L at 30 psi can't make more then 900 whp. Doesn't add up. Same turbo- one turbos for that matter.
My point is : a turbo doesn't behave the same way on all platforms.
If a k16 based hybrid would make 700 whp there would be no need for all these fancy turbos from tial or full custom 30rs etc.
just saying.

 

I made 550awhp on 16g billets with 1.4 bar.

 

Let me ask you this before I go back to my other points. What us the most hp you've made with a tial 2871? It uses a smaller turbine than a k16 btw.

I agree it changes to engine size and platform to platform but again a twin td05/billet 16g on a 2.6 makes 700whp and has been done many times.

It comes down to the whole package and restrictions in the engine. First you will not do it on pump gas, it needs to be race fuel or e85. Second, you'll need to be running catless, third you'll need to have increases our intake system all the way from the filters to the plenum to reduce the bad restrictions on the stock setup. Very few people do all of this for their street cars with high resale value.

The last thing though why you don't see it though is because it's at the limits if the stock motor. Then if guys decide to spend the money to build the motor, they decide to spend extra and get the full hp potential put of it.

I kinda wish now I would have built the billet k16s just to prove the thought wrong increase of going to my k20 turbines.

On a side note with a built motor I'm very confident I can hit 900whp on my k20/billet 20g turbos on e85

 

The OP is looking for 650 to 700 crank horsepower. This is doable and has been done for years

 

900whp on 20gs???

 

At 30+psi, yep. Not talking old cast 20g wheels here. Talking extended tip, high profile, billet 20gs which is much more efficient blade design. With the setup on my car I very much so think it's possible.

Also a dyno reading is really subjective because they all read different. Same car on 2 different dynos can read 50-100whp different when your get up around 4 digit numbers

Just for your information as well I have built hundreds of turbos and designed many compressor and turbine wheels and worked with the likes of garrett and borg warner/bullseye doing so. I still own casting dyes from pre cost effective large production billet wheels times. Done many very wheels things with turbos in my life others said was impossible or would not work.

 

Total respect for what you have done but never will happen. Heck ill make that maybe with maxing 3076 ball bearing turbos out at 850whp to 900whp if that. 20gs can not flow enough to make that power.


I believe chris green is the highest 20g billet dyno at 717whp with e85 and a crap load of boost lol.

 

I thought your estimates seemed high from what I've seen in the past posted here, but you've made the point before that the new billet wheels make these higher dyno numbers a possibility now. What are your tboughts on the billet k24 wheel pictured below? I wonder if it is possible to swap it out for a newer one? My turbos are about 3.5 years old.

 

That is not correct. The modern billet 20g wheels can flow 50b of air per compressor which on basic general term means can produce about 500whp, per turbo. After that it goes back to the efficiency of the engine.

If you can't make 900whp on 3076 with race gas or e85, either your have way to much restriction in your engine or your tuning is marginal. Guys are making 1100whp on efr7163 which is a smaller turbo than a 3076

 

Btw the pineapple express built did over 750whp on a stock motor with e85 with k24/billet 20g and proefi. By the end of the week mine should be doing the same.

 

https://www.6speedonline.com/forums/996-turbo-gt2/390897-project-pineapple-express-build-update-v-3-a.html