i was thinking about the ARD g25 kit, tialR650 kit, rs6, or gt28rs kit. please help me decide the best turbos. i read AZ alot in the build threads and so many people go with different big turbo setups and i wanna know the best turbos. i was thinking about running about 15- 20psi for just regular driving like into the mountans for sowboarding and such and then also having a race file when its time to get dirty.

so whats the best turbo set up that spools early enough so that im not waiting tell 6k "lol j/k but for real" to make boost? but also is the most reliable?

the motor will be fully built befor the turbos go in. the plan is 2.8 head p/p valve springs, rs4 cams, pauder rods, pistons are still being researched. and maybe a 3.0 bottom end but prolly not.

please all help i would love and respect, and also any other options and advice wont be look disreguarded.

 

When I was getting into my rs6 build I looked at a lot of the same turbos (with the exception of the gts). The basic consensus is that those are all good set-ups.

Since you are building the engine quite a bit my advice is that you get the biggest turbos you can afford: do the GT28s if you have the money for it.

 

I have some JHM 2.8L pistons for $850 shipped retail is $1200 shipped let me know if you want them!!!

 

First off, your thoughts about boost levels are a little off. If you go and drop 12-20K on a big turbo setup and truly want to run 15-20psi, then you're totaly wasting your money and those turbos. Seriously, stick with a KO4 setup and you'll achieve everything you're looking for and it will cost 5-8K tops. Plus, the overall day to day drivability will be better due to better spoolup. At those boost levels it's likely that a big turbo setup would be actually slower by a fair amount than a decent pump gas KO4 setup. The whole purpose of the bigger turbos is that they support much higher boost levels at higher rpms than KO4s that like KO3s, tend to drop off. Plus, they work more efficiently and as such can support higher boost on comperable octane levels. It's the higher boost at higher rpms that make them better than RS4 options. If you don't take advantage of that then you end up with a slower car for a whole lot more $$$.

I have tials and run 23-24psi on 91 oct and a stock motor. That's actually a conservative setup. If I was running less boost I think I would actually be disappointed. On days where I throw in a little higher octane and the ecu adjusts to take advantage of it, the car abosulely sceems. Makes me wish I had 93 at the pump all the time. Turbo choice generally comes down to a ballance of cost vs hp potential. Based on your requirements, just pick up a used KO4 set from the classifieds and be happy. Big turbo setups have to be a labor of love. KO4s you can just install and be done.

I hope I've provided some useful insight for you on the subject. Best of luck.

 

If you're going to spending a lot of time on twisty, curvey roads, you probably want to get boost with as little RPM as possible.

If you want ***** out power, then your into custom systems, maybe external wastegates....etc.

Either way, just depends on what you want. 450Chp with K04's isnt too shabby on the street. Your just not going to be able to chase down a Ferrari.

By the way, I just saw that Garret has a new compressor wheel out that is supposed to be 10 - 20% more efficient (may want to check them out).

 

i agree with the K04 advice. however, of the choices you presented i'd say go with the RS6s for the qualities you outlined.

 

i totally agree with u on your views, and if someone asked me my advice on a turbo setup i would say close to what as well. however, i have my dream can and will never selll her. my moto is go big and in 10 years when i have kids i wanna be the dad with the bad *** toys. anyways, if im going to upgrade im doing for real and not holding back. i would like to keep in around 15k tho.
Now as far the whole 12-15psi tune maybe i was a little to conserative. i dont beat up my car nor do i punch it everytime i drive. i just would enjoy a reliable car/tune for leasure driving. but also be able to switch to a different map incase that ferrari does come next to me.
thank you for all your help guys i would enjoy more imput along with other turbo set-up as well.

Keep it commin..

 

I vote GT2860-7's! Shawn is making 22lbs of boost by around 4k RPM on his GT2560's and the should spool decently sooner with these 2860-7's due to the .42 A/R compressor housing vs. the .60 A/R comp housing for the GT2560 as well as the 10% higher max turbine efficiency. They will also have more power potential than the RS6's and the like. I say go GT's since you're fully building everything, but since you car is going to be a daily as its main purpose, I wouldn't go with GT2860rs'.

 

Thanks jibber, i have read your build log a few times on AZ but i cant seem to post or do anything on that site, i odnt get it. anyways, the car mostly sits in the garage except weekends and snow, otherwise it the work truck for daily. thanks for your advise.do u have a link for that set up?