How Well Do You Think This Turbo Will Perform?

[PROJECTRB240SX]

I CAN GET A T04B TURBO DIRT CHEAP BRAND NEW.... ITS GOT A .6 A/R COMPRESSOR WITH A .4 A/R TURBINE. I'M THINKING OF PUTTING THIS ON MY RB20DET TO REPLACE MY BLOWN STOCKER, THIS THING IS QUOTED TO PUSH 625CFM.... DO YOU THINK IT COULD SUPPLY MY RB20DET WITH ABOUT 400WHP? I'M ONLY LOOKING FOR ABOUT 15 LBS OF BOOST TOTAL.... THEN I'LL BE PUTTING A MICROTECH ECU ALONG WITH SOME MORE MODS LATER ON DOWN THE ROAD TO MAKE UP FOR WHATEVER POWER I NEED TO REACH THE GOAL OF ABOUT 400WHP.

ANYWAY, I CAN GET THIS FOR LIKE PENNIES ON THE DOLLAR THIS IS WHY I'M INTERESTED IN IT. THIS CAR WILL MAINLY SEE ALOT OF DAILY DRIVING WITH ALITTLE DRAG RACING ON WEEKENDS. I HAVE TO BE MORE CONSERVATIVE WITH THIS CAR BECAUSE IT NEEDS TO BE A DAILY DRIVER UNTIL I BUY A NEW CAR NEXT YEAR.

[WDRacing]

Is it a 60 or 60-1 compressor, is it a .48 or .63 AR exhaust housing?

[PROJECTRB240SX]

.4 TURBINE HOUSING

I HAVE PICTURES COMING TO ME SOON. I'LL POST IT WHEN I GET IT.

[PROJECTRB240SX]

HERE'S THOSE PICTURES:

[Carl H]

hmmmm.with the .4 turbine housing it should spool 'fast' for that size turbo, but at higher rpm's effeciency is going to suffer.looks to be a clean turbo but i would do more research on it before putting money down on it.

[BoostFab]

look like it has a t4-foot print, and the .4a/r will spool up fast. i think it would take 400hp, not more, on that size turbo. have you thought about T61 or something bigger?

BTW! Garrett own Roto Master, so the quality should be good, if it's recently made.

[NISMObuttnutz]

400whp will be a stretch with that turbo. I've seen T04B's on semi built motor make only around 330-360whp.

[BoostFab]

400whp will be a stretch with that turbo.

Theoretically you only need a flow of ~580 CFM to make 400 HP, so that turbo is capable.

-----For reference:

Stock Turbo 360 CFM at 14.7 PSIT3 60 trim 400 CFM at 14.7 PSIIHI VF 23/24 423 CFM at 14.7 PSIIHI VF-22 435 CFM at 14.7 PSISR 30 435 CFM at 14.7 PSIT04E 40 trim 460 CFM at 14.7 PSISmall 16G 505 CFM at 14.7 PSILarge 16G 550 CFM at 14.7 PSISR 40 595 CFM at 14.7 PSI18G 600 CFM at 14.7 PSIPE 1820 630 CFM at 14.7 PSI20G 650 CFM at 14.7 PSISR 50 710 CFM at 14.7 PSIGT-30 725 CFM at 14.7 PSI60-1 725 CFM at 14.7 PSIGT-35R 820 CFM at 14.7 PSIT72 920 CFM at 14.7 PSI IHI VF 23/24 388 CFM at 18 PSIT3 60 trim 410 CFM at 20 PSIIHI VF-22 460 CFM at 18.0 PSIAVO 320HP 465 CFM at 17.5 PSIT04E 40 trim 465 CFM at 22 PSISR 30 490 CFM at 22 PSISmall 16G 490 CFM at 22 PSILarge 16G 520 CFM at 22 PSI AVO 400HP 580 CFM at 17.5 PSIPE 1820 600 CFM at 22 PSIAVO 450HP 650 CFM at 20.0 PSISR 40 650 CFM at 22 PSI 20G 695 CFM at 20.0 PSI AVO 500HP 725 CFM at 23.0 PSISR 50 770 CFM at 22 PSIGT-30 790 CFM at 22 PSI60-1 800 CFM at 22 PSIGT-35R 880 CFM at 22 PSIT72 1000 CFM at 22 PSI

HKS GT2835 Turbo about 400 hp approx 580 CFM, pressure not specifiedHKS GT3037 Turbo about 460 hp approx 670 CFM, pressure not specifiedHKS GT3040 Turbo about 490 hp approx 710 CFM, pressure not specifiedHKS GT3240 Turbo about 570 hp approx 830 CFM, pressure not specified

[NISMObuttnutz]

In my experience, theory isn't really an option when it comes to calculating HP figures. There are too many dependant factors internally, such as how much air the stock ports and vlaves can flow, compression ratio, actual compression that the motor is making etc.... I think it's possible to do it, but it'll take some good tuning and a bunch of supporting mods, although I could be totally wrong...only one way to find out for sure.

[BoostFab]

lol, strap taht baby down and find out!

[GTR Shop]

Don't even think about it!Its prob off a stationary engine.0.4 exh is ok if you don't want to run over 3000rpm...

[PROJECTRB240SX]

IS IT REALLY THAT BAD ON A RB20?

WELL I GUESS I'LL HAVE TO PICK UP A NEW LARGER EXHAUST HOUSING..... I GOT THE TURBO FOR $350 SHIPPED. I'LL JUST GET A LARGER A/R EXHUAST HOUSING AND DO A COUPLE UPGRADES TO THE INTERNALS AND THEN SLAP IT ON.

[GTR Shop]

Seriouly.. put it on eBay and get rid of it.. its junk (sorry to say)

[PROJECTRB240SX]

what if I just went with a .63 a/r exhaust housing?

[WDRacing]

Dude, Christian...there are some sweet turbo's on ebay that are rebuilt for 300-350, that would be a perfect match for the RB20.

[PROJECTRB240SX]

Ok cool I'll Look.... BTW I just got the package and I'll be test fitting it Soon I'll Send You money This week to your paypal. ohh How much was shipping so I can reimburse you that also?

Thanks for all your help everyone and Brian! I'll Let you knwo What happens and I'll be sure to take pictures of everything this time.

[WDRacing]

The shipping was only 15 bucks bro...I was surpised.

[PROJECTRB240SX]

Cool.... I'm getting a check on monday hopefully and Then I'll paypal you all the money.

Thats damn cheap for how heavy that thing is!

[cyris3d]

just buy my kit

[PROJECTRB240SX]

I WANTED TOO BUT I DON'T HAVE THE MONEY FOR IT. I THOUGHT YOU SOLD IT?

[cyris3d]

the guy flaked on me

[PROJECTRB240SX]

OHH OK..... SO HOW MUCH ARE YOU ASKING? I WOULD REALLY JUST NEED THE TURBO AND OIL LINES.

[cyris3d]

$1200 for turbo, adapter box, waste gate, steel braided oil feed and return, down pipe, and 90deg silicone elbow.... and piping if needed..

[PROJECTRB240SX]

DOES ANYONE WANT TO BUY EVERYTHING BUT THE TURBO, OIL LINES, AND 90 DEGREE PIPE?

[PROJECTRB240SX]

I GOT MY TURBO YESTERDAY..... ITS REALLY CLEAN AND IT HAS A REBUILD TAG OF EARLY THIS YEAR.

ITS GOT A BIT OF ENDPLAY THOUGH, LIKE SOMETHING IS LOOSE. I HAVE FOUND A .69 A/R EXHAUST HOUSING THAT I WAS THINKING ABOUT PURCHASING TO UPGRADE THIS TO A TURBO THAT'LL WORK FOR MY APPLICATION.

DOES ANYONE KNOW HOW TO REBUILD TURBOS OR WHERE I SHOULD GO TO GET THIS ENDPLAY PROBLEM FIXED AND THE EXHAUST HOUSING INSTALLED? ARE THERE ANY OTHER UPGRADES I SHOULD DO WHILE I'M AT IT?

[WDRacing]

Make sure it has a 360 thrust bearing and that the rebuild company does real good balancing.

Brian

[PROJECTRB240SX]

CAN IT BE UPGRADED IF IT ONLY HAS A 270?

[PROJECTRB240SX]

DOES ANYONE KNOW WHERE I WOULD GET A FLANGE FOR THAT DISCHARGE STYLE? ALSO DOES ANYONE KNOW WHERE TO GET A HKS STYLE WASTEGATE OUTLET FLANGE?

[mikesim]

i am always in search of turbo information. it is a forever changing decision for me, and i'd like to contribute some that i know.

this is a great site to learn the hardcore details of turbos:

http://www.turbomustangs.com/turbotech/main.htm

the problem is after reading all the jargon, and doing those calculations, i've come up with just more questions.

loosely based on the calculations there, i have chosen 7 candidates, all of which will flow at a minimum flow efficiency of 65-70% @ 4000RPM, which is where they all hit full boost in a CA18DET.

They are; T04B S-3, T04B V1/V2, T04B H-3, and T04E's in 50, 54, 57 and 60 trim. the T04E 54 trim appears to have the best flow efficiency from 74%@4000RPM, but it dies off by 8000RPM. Now a T04E 60 trim seems pretty large, but has a very even flow eff.

I don't know what to choose. i definitely don't want to be one of those guys who buys a GT2530 or whatever and decides he wants more down the road. I want the most this motor can handle before internal upgrades, not including head gasket. and i definitely don't want to have a turbo to big for the motor.

geez. why do there have to be 1 million choices of turbos and only 10 places to learn about them? (i've found 3 :pface)

I don't even want to get into the hybrids, but the honda guys love to run those on their little 1.8L's too. T3/T4 or T3/T04E combos.

I NEED GUIDANCE!!!

:help