Just wondering which turbo you guys would recommend for 375 rwhp to 420 rwhp.

The supporting mods are:
3" downpipe, midpipe and catback.
Power FC
550 cc primary and 1300cc secondary
FMIC
Street ported motor
ignition system
50mm wastegate

Im looking for something with a fast spool that wouldnt run outta breathe. Something where if i i wanted to i could up the boost to around 16-17 psi and hit around 420 rwhp. But something also that i can run about 13-14 psi and be at 350+rwhp. Im very skeptical about the turbo i have now. Its the xspower one. I basically just bought it hoping it would fix my smoking problem (thought i had a blown turbo) but now that i have it, i just plan on breakin in the motor on it til i can afford a nice one. The hotside is 1.15 and the compressor side looks really small so i figure its probably not gonna supply enough air for what i want. Any suggestions?

attached are the pix of the turbo now, do you think its even capable of 350?

 

60-1 4" inlet
not the Hi-Fi

 

^ what he said

 

you need to include "Aluminum AST tank" in teh parts list with your new turbo. You're begging for trouble with that stock piece of **** still in there.

GT40R
GT40
GT35R
R85
T04S

are all on "wait" or backorder as of a couple weeks ago when I checked around. Just a heads up.

 

35R's on backorder??? Not so sure.

 

is eliminating the ast not okay? oops, thats what i did.

so a 60-1 not hifi. could i find that on like cheapturbo.com, where do you guys recommend i look?

what size exhaust housing and compressor housing? like 1.00, or 1.15?


which would be the most cost effective turbo?

 

60-1s are great. if youre going divided manifold, go 1.00, undivided go .84 or .96

 

http://store.yahoo.com/cheapturbo/garrettto4s601.html

so this turbo and a 1.00 a/r? that would be perfect for what im lookin for? 370 rwhp on low boost and 420rwhp when i want to run a little more?

 

yes no?

 

that's a good turbo, I say yes, it will give you what you're looking for.

 

yep

 

Replace those 1300CC secondaries and get some 1600s if you want over 400RWHP with a low duty cycle.

Also junk the useless AST as it is not needed and is just more clutter.

 

oh hmm, well i already have some 850cc injectors sitting at home, and is there anyway i can get em bored out to 1600cc? i dont relaly want to use them as primary i dontk now why

 

There's nothing wrong with running 850 primaries. A lot of us do it, and have been doing it for a long time. If fuel economy is a concern, then you should have it tuned conservatively at narrow throttle (normal city driving). Spend a little bit more money and buy a rail and a set of 1600s. Do you want to run a safe duty cycle with plenty of room for more boost in the future, or do you want to be on the boarder line running a high duty cycle with a small limit of boost? If you want 420rwhp and run it "safely" then you need bigger injectors all the way around.

 

I run an R85, had Steve Kan street tune it last week. The butt-dyno says it's 400whp, but I'll know for sure next Sunday.

X...

 

oh...well can i just put the 850s in the primary and keep the 1300 secondary? should that be sufficient for 420 rwhp. I dont think i plan on running anymore boost after that. Pretty much im hoping 370whp is enough to beat mostly anything. and if i had to or running a track. Id like the option to turn up the boost to hit that 420whp mark safely. And if the 7 loses then, then i guess id have to call up one of you guys to come out and whoop someone! =D haha.


Well now that i think about it. i think i will go with a fuel rail and bigger injectors in the future before i start boostin the car hard. Just to be on the safe side. Lets say i do get the 1600 cc... and you say i can run more boost. how much hp do you think i could possibly get out of the setup, max? while still being able to drive my car home after a few runs haha.

 

The key to hitting those desired 4XXrwhp number with that turbo, is all in the tuning. Tuning is very important. There's an FC here on the board that hit 520rwhp on with a PT67 kit, the same kit had come off another FC and had barely made 400rwhp. Tuning is where it counts. You can run 420rwhp safely as long as you have plenty of fuel and be tuned for it. I say with some C16 in your tank and about 20psi you can get right around there.

 

Masterpower T61 1.00ar divided t4

 

HEY on those injectors get them flowed , just to make sure they are what you think they are , when you are passing 400 whp you had better be on the mark with injector size. RON

 

you don't need so much turbo
if your only looking to make high 300 to low 400 horsepower

Like I said
60-1 .81 or .96 turbine housing
very quick spool up

FD Rey made 370+ at 15 psi (stock motor) with a "small" 60-1 "hi-fi" which looks as small as a T04B
a true 60-1 with the bigger inlet and bigger snail makes more power

The only problem I see is GREED
once you get use to 400 HP
you'll want more down the road

 

^ you are correct sir. I'm convinced I can hit 400rwhp with about 20psi and c16 in the tank. Remember the turbo was pretty much shot when we did those pulls. I look forward on doing a pull in 4th and actually reving it past 6500 rpm.

 

K guys. I have a street ported motor

And i think ill be going with this:
$819.00 with 1.00 a/r
http://store.yahoo.com/cheapturbo/garrettto4s601.html

now about the injectors what size should i go with?
should i get the 2 bosch 1600cc injectors with the Rx7store secondary fuel rail? totalling $330 + shipping. seems to be most cost efficient.

but what should i do about the primaries? leave the stock 550cc in there? would that be okay? or do i have to upgrade those. and if i do, does that effect my gas mileage say i go with the 850cc (if i wanted to do normal driving for the week and not boost). When people say it stumbles around 4,000 rpm. when you dont upgrade primaries is it really bad?

OR, would 1300cc secondaries and 550cc primaries be enough to fuel 420 whp at 85% duty cycle?

 

good choice it should be a kick *** ride when done

 

that's about my range...

.84 T3/62-1 (MAster Power Turbine, Turbonetics compressor) ... 430 @19 psi (now at 23 psi) pump gas,,,,full boost @ 3000, VERY fun to drive... daily driver and great for street racing....as someone said... tunning is the key....

that 60-1 is a nice one turbo also and i think that with good tunning and c16 you may push it around 450hp ...

 

the xs power 60-1 is falsly advertised. its just a small v trim not a super trim 60-1 wheel. so its only gd for max 350rwhp