Azriel_Strife

iTrader: (5)

Hey guys, I'm building a single setup, I purchased a T04B turbo without knowing too much about turbo sizing trim and whatnot. Power isn't my goal for this build, but I'm confident it should flow more than my stock twins.

I'm running an OBX stainless divided manifold, porting seems to match up almost perfectly. So my question is, what can I expect for spool speed, max efficient power, power band, ECT.

My motor has a stock intake that has been port matched, the exhaust has a large "monster" port.

Turbo specs are as follows:

3" Compressor Inlet Diameter
2" Compressor Outlet Diameter
Journal Bearing - Wet Float Type
Oil Lube/Cool

Compressor Wheel: 0.50 A/R Cold Side
Ind: 54.06 mm
Exd: 69.91 mm

Turbine Wheel: 1.15 AR divided housing
Ind: 73.16 mm
Exd: 64.16 mm
Trim: 76.9

Azriel_Strife

iTrader: (5)

75 views and nobody has any idea of how this turbo will act?

pito13b

iTrader: (3)

Compressor wheel is pretty small. You will have to find out the lbs/minute and that will give you a general # using some calculations posted on the forum.

Before I sent mine out for a wheel upgrade, my inducer was smaller than yours, but exducer was larger. From searching around I found that the turbo most likely flowed 48 lbs/min. From this site, http://www.wannaspeed.com/index.php?...d=22&chapter=1
362HP.

1.15 a/r rear will be laggy, but the smaller front wheel will help. Before my wheel upgrade mine would want to start boost in the 3-3500 range. I couldn't boost the car because I am not tuned yet.

Trots*88TII-AE*

iTrader: (11)

Sounds like it's a p-trim turbine, but the compressor wheel is a bit smaller than a T04E 50 trim. You would probably have been better off with a larger compressor wheel, this won't perform a lot better than stock twins. You'd be lucky to hit 350whp with that turbo IMO.

Azriel_Strife

iTrader: (5)

I'm not ofter power with this turbo, this setup will be tuned for 300 rwhp.

I just wanted to upgrade to single for simplicity and looks.

arghx

iTrader: (3)

Those diesel turbos are usually designed for high pressure ratios.

Azriel_Strife

iTrader: (5)

Yeah, but its a B wheel, meaning it's not a pressure wheel its a flow wheel. (it makes power at lower boost levels.) To4B and To4E are the same, they just have different compressor wheels, that's the difference.

ScorpionT

iTrader: (3)

Actually, T04B vs T04E comes down to the compressor housing, not the wheel itself. The T04B has a 2.75" inlet and 1.75" outlet, whereas the T04E is 3" inlet and 2" outlet. If you have the same wheel in each housing, the T04B will be less efficient, meaning more heat and higher pressure at the outlet.

Basically, you are buying a diesel turbo that was used to slightly bump the power output and efficiency of the. The large turbine side can accommodate for a larger displacement, and the small compressor wheel will spool quickly giving more low end grunt (torque) for towing and such.

Azriel_Strife

iTrader: (5)

hm, my inlet is 3" and ouput is 2", so that makes it T04E. Well that's nice to know, thanks.

ScorpionT

iTrader: (3)

No problem. Ebay turbos are often incorrectly listed. Misinformation is also commonly perpetuated, so if you did a search comparing the two Im sure thats what you came up with.

Some companies do list turbos as T04B trim or T04E trim, but it just means that specific wheel is used in that style housing.

Azriel_Strife

iTrader: (5)

Ahh that could be where the confusion was. well, I have a T04E now.. haha, I feel like I just got a free upgrade.

In any case, the diesel compressor wheel fits perfectly in the Ebay housing. I fired her up today, no leaks at all. Seems to spin very freely, and continues to spin for a good 15 seconds after shut down.

7passu

iTrader: (10)

You took the problem out of eBay turbos by changing ur center section like you did so u shouldn't have any issues at all. Make sure you jet your oil feed a lil and have a nice large free flowing line for your return. I had the same style turbo with same exhaust housing with same manifold etc..and it spooled great....whole lot more responsive than the twins and just flat out felt better. Never dyno'd it though cause I went through a spell where I was constantly changing set ups...

blacken_rotary

stay away from ebay turbosz

Azriel_Strife

iTrader: (5)

Right now I have the oil feed running straight in, what will happen if I don't put a flow restrictor in it?

dguy

iTrader: (8)

It shouldn't be a problem with a non ball bearing turbo. Over oiling a turbo can cause an oil burnoff condition but from what I've seen when customer cars have come in with the same problem there will be no lasting damage.

Azriel_Strife

iTrader: (5)

Mine is definitely floating journal bearing, but I could put a restrictor in just for the heck of it. I guess it would make less work for the drain line no?

bob13bt

iTrader: (9)

He means stay away from Chinese made turbos that are $200-300 brand new...they are crap

Garrett, Borg Warner, KKK, go with big brand names as far as turbo choice

And in your sig...I think you mean R1...Type-R is a Honda nomenclature

Azriel_Strife

iTrader: (5)

I know, I was actually asking if installing an oil flow restrictor to my feed line would put less load on my drain line.

I bought an ebay turbo, took it apart, used a good center section and wheels and used the ebay housings. It's perfectly fine now.

The Type-R is the RHD counterpart to the R1.

Trots*88TII-AE*

iTrader: (11)

I would say try it without the restrictor first to see if you get any excess smoking, only put the restrictor in if you need to. Too much oil is better then not enough IMO, especially when it comes to journal bearings.

Azriel_Strife

iTrader: (5)

I haven't noticed any smoke really. So I guess 6kg cm2 (87psi) of oil pressure isn't too much.