Hello gang, I'm back. Got the motor/tranny in.

All new engine sensors.

JWT package.

3" Jeff P downpipe.

Turbo custom built t3/t4 hybrid.

Question: what is compressor trim?

Specifications are as follows, from the builder. builder says trim means nothing to him????

650 for rebuild.....?

turbine side is 63mm diameter wheel, which I think is stock.
compressor side is 56mm diameter wheel.
turbo is a t04-e
60 a/r

Is there any way using the above information to determine the trim?

She will be running the streets very soon.

lots of mods to list a little later on.


I'm captken, fubars friend.

help guys!

 

Common turbine housing a/r "sizes"
T25: .64 a/r, .86 a/r
T3: .36 a/r, .48 a/r, .63 a/r, .82 a/r
T4: not listed...see why later

(CivicRyda2K's addition)
Common compressor housing a/r "sizes"
T3: .42 a/r, .50 a/r, .60 a/r, .82 a/r
T4: .50 a/r, .60 a/r, .70 a/r


In a nutshell, the larger the a/r, the later the power comes. A small a/r gives you a fast spooling turbo but limits top-end power. A large a/r gives you a laggy turbo with big top-end power.

Common T25 turbines:
DSM trim (?? not sure how big it is, but it's quite small)
60 trim (small)
76 trim (medium)

Common T3 turbines:
Stage 1 (small -- most common turbine on junkyard turbos)
Stage 2 (med)
Stage 3 (large -- most common turbine on new T3/T04 hybrids)
Stage 5 (very large)

Common T04 turbines:
I'm not gonna list any because I don't have info on them and the T4 turbines require so much exhaust energy to spin that they are practically unusable in our application unless you want insane lag and have got a motor that will spin to 10k every day.

Common T25 compressors:
I'm not gonna list any. I do have some info on them, but for the most part, a T25 compressor will struggle to stay in its efficiency range on a boosted

Common T3 compressors:
40 trim (20lb/min --
45 trim (21lb/min)
50 trim (30lb/min -- probably one of the most common on junkyard turbos,
60 trim (34lb/min -- biggest "production" T3 compressor,
"Super 60" (36lb/min -- note: this is NOT the "60-1" compressor)

Common T04B compressors:
S trim (37 lb/min)
V trim (48 lb/min)
H trim (49 lb/min)

Common T04E compressors:
40 trim (36 lbs/min)
46 trim (41 lbs/min)
50 trim (47 lbs/min)
54 trim (45 lbs/min -- note that the 54 trim flows less than the 50 trim)
57 trim (49 lbs/min)
60 trim (50 lbs/min)

Common T04S compressors:
60-1 (flows a ****load, never seen a compressor map for it)
62-1 (bigger yet -- I believe this is a T04S compressor...correct this if it is wrong)


Performance (listed in order of increasing performance):
A T25 is a straight T25 turbo --> T25 turbine + T25 compressor
A T28 is a hybrid T25/T3 turbo --> T25 turbine + T3 compressor
A T3 is a straight T3 turbo --> T3 turbine + T3 compressor
A T3/T04B is a T3/T04B hybrid turbo --> T3 turbine + T04B compressor (used in Drag kits)
A T3/T04E is a T3/T04E hybrid turbo --> T3 turbine + T04E compressor (more performance than T3/T04B
A T3/60-1 is a T3/T04S hybrid turbo --> T3 turbine + T04S (60-1

just a bunch of useless info for you

 

you must have a photographic memory.....

 

Indeed... it's called "copy & paste"

 

i know i know. it was funny to me!

 

very informative information, thanks. the header was cut and paste...a joke.

my turbo uses the stock turbine size and housing.

the compressor is a t4-e
the compressor housing says ar/.60 which is the same as the stock nissan compressor discharge size.
the compressor diameter is 56mm, so the builder says.
any idea which trim it is other than take the damn thing apart?
or just guess from the very informative list you provided?

again, thanks in advance for help, kenny.

 

Where'd you get the turbocharger?

 

turbochargers inc, memphis.
rebuilt the one that was on my car, using the turbine adding the T4-E compressor housing and new center section.

he claims it's a 56mm wheel and trim is 56? He rebuilds replacement turbos for diesel equipment.

 

So... what's your question?

 

i think he just wants to know the trim of his turbo, given the specs from his vendor. and if he can't find the trim based on that, should he take apart the turbo and measure...Personally, i say it's not worth your trouble.

 

I just need information.

 

compressor trim.

 

wow im confused, he posted a LIST of A/R's for turbo's in a list meaning if you know what your turbo is it should/hopefully be on that list then you could figure it out. now your saying the compressor housing says .60 A/R and then heard memphis company say he used a 56 so its one or the other, its not rocket science nor is it a big difference, if your not positive and cant figure it out through what the turbo says that long list and what the company says from which you bought it theres only so much we and anyone can do. i dont know why your freaking out and saying things when no one was ever on the offense or trying to create trouble. are you ok? did something happen recently? last i remember you you were a very cool guy and enjoyed this forum alot and got help from fubar am i right? thats you right? just chill out, ask the company directly because theres not 100% way to answer this question when you dont seem to sure about the turbo itself. usually the housing's dont lie nor do the companies. you can try posting a picture of is so we can see the print on the compressor housing. now out of my curiosity what will you gain from knowing the exact A/R when you seem to have a general idea of the number 60 floating around or close to it.

 

Yep, I was drinking. And I usually don't drink as much.

Apologies to all offended. I was outta line.
Lets start over.

kenny,

 

http://www.mygen.com/users/dbruce/my...sor%20Maps.htm

T04E-50 goldilocks says just right.

I think mine is just wrong? I'll try to resolve this later. later guys.