wondering what size turbo would be good for 350-400whp. something tho I wont max out trying to hit my goals. im trying to read these 2 books on turbochargers to understand the whole sizing and science behind matching them to your engine and set up but I wanted to get a quick response from you guys on what you have tried out and found to work well for you. I don't care what any one says, fully understanding turbos and size matching parts and mathematics behind building your motor with one is not easy to understand if you want to efficiently and effectively match the perfect sizing for your goals. I dont want to just slap anything on their with a range for my goal and try and make power.... head me in the right direction, then i can look more into it.

 

2871 64 a/r
problem solved.

 

^ x2

 

T66.

If this is a KA, then do a 3071r .63ar GT housing. This gives you a bigger exhaust wheel over the 2871. It should spool like a beast with 2.4L and make 400whp.

 

sounds great. Tell me if this turbo is reasonable for what I want to do. heres the specs
Working Pressure 6-25 PSI Compressor .70 A/R Turbine .63 A/R Compressor Wheel 61.3 /82 mm Turbine Wheel 62 /67.8 mm

Ball Bearing Compressor / Journal Bearing Turbine

also another question. will I be able to achieve 400hp on 93 octane? Im thinking of building my own intake manifold. i think oj perfromance had weld in injector holders. I know a tig welder and my step dad works at a shop were he can get any type of metal tube also, and lots of scrap metal and a polishing wheel too so i can mirro that thing up. The aftermarket ones are so high priced and i really wanted straight runners that I figured I could build one cheaper and of better quality. Didnt I read somewhere that smaller diameter longer runners would promote better low end power where as wider shorter ones would help top end? q45 flange for throttle body or will a q45 throttle body be overkill? I have one laying around beautiful new looking been in a box forever. also what injectors should I use. I have read bad things about deatshwerks injectors and venom are shit supposedly. nismo ones any good? what do you guys use? i wish I could get this whole degreeing thing with cams down on top of intake and turbo manifold designs ect. Am I able to dial in certain parts of where my power band will be by changing things like runner dimensions and turbo manifold designs, cam tuning ect so I can get more consistent power threw out the entire rang of RPM?

 

That sounds like a GT35R. Yes you can make 400whp on that. It's not going to spool very early though.

I was joking about the T66.

 

guess Im getting the garret 3071r then. I can't wait for this build to be done. Im buying a second s14 later on so I don't fuck with my dd. I want 2 t66 turbo, 1 for cylinder 2&4 and another working cylinder 1&3, custom turbo manifold route both those bitches into an after cooler, nitrouse and c02 on the front radiator and aftercooler whole car carbon fiber every part EVERY part except bearings and bushings with 20" rims sticking a foot outta each end of the car...and a switch on the dash that shoot 2 small 1 foot long turbine engines outta each door pannel....rip your balls off power,

 

t51r lol