Guys,
What have some of you guys done to your 3 liter car? Would a K27 help? what type of intercooler would be nice? cams? etc.. What kind of HP numbers can you expect?

 

Steve - Not sure exactly on a 935 but on my 3L 944 turbo, I have a powerhaus sport turbo (K27) and I am happy with it. Boost comes on around 3200 rpm and stay strong to 6000rpm. Last dyno, it made 340 rwhp on 18psi and 380 rwhp when I cranked it up to 21psi on 93 pump- stock intercooler. Just so you know the potential but a K27/6 is a solid 300-315 rwhp turbo and it's great for street drivability. And I assumed you already have some supporting mods to it...Just my .02.

 

First thing I would do on any air cooled 911, Turbo or non Turbo, is ceramic coat the exhaust. It'll cost you, but you'll notice much more consistent (and higher) performance and increased longevity from a lot of the underhood components.

 

Become a PCA (if not already).....about $80/year
Enter a few D.E.'s (to become a better & safer driver)......about $180 per event.

Invest in safety equipment. Then do mods to match your driving skill level.

 

Depends 100% on your budget.

 

First I agree with post 4 above.

A 3.0 turbo is a special car and it might be worth keeping it close to stock configuration.

What is more important to you. Grunt or power.

For grunt. A K27-7200 or GT30 turbo, shortie headers, straight through muffler that exits right side, lower ring and pinion. Intercooler if you must. Stock cam and ports.

For power, the 3.o can run with the 3.3's if it makes its power a little higher in the rpm range. It has a better crank and rods to alow this. It also has a smaller combustion chamber and lower compression so it can run at a higher boost. A 3.3 running at 1 bar has the same effective compression ratio as a 3.0 running at 1.1 bar. Must have a good intercooler. Next, add cams that pull to 7,000rpm. Groupe B cams, RUF GB's, or custom. A GT 35 turbo. Open up the intake ports. Lowest restriction muffler you can stand that is straigh through and exits the right side. Headers, RL8 equal length, SSI with custom Y pipe, B&B short style, euro / late US heat exchangers probably in that order. Have Anidal recurve your dist. Optionally add MSD.

Then tune timing and AFR on the dyno. Might need work to extend fuel and ensure equal fuel delivery.

Better yet, check with an expert. This is just what I would do.