Hi this is my first post and sorry some mistakes but i dont speak english ...

I have been researching what one off this 3 turbos are the best ! already known that the 60trim can make more peak power, and that the trim 50 have best spool ! But does it?
After several dyno research on 1 engine B16 ,get the following conclusion.


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the results are just there until the 5200rpm because after thath rpm the pressure change to much and could not find many results of the 3 turbos the same pressure on high rpm....

t3/t4 50 trim spool better does not give much power as t3/t4 57 trim ar 63.

57trim is the best match for street use on b16 engine.whith better low torque and hp in my opinion and a good spool to.

 

Actually the 50 trim is for applications for the B16 in a "streetable" form for power of 250whp-350whp. Contrary to the math you've presented.

 

this thread will be quick, mac will pretty much shut this kid down.

 

Hopefully he will help him understand and learn and not "shut him down".

 

when mac teaches you, you stop talking out of your *** lol

 

Good thing we can ask questions on this forum and not be blasted for it. At least this guy is trying to learn and grow. Plus this is his first post. Don't run off new people to the site because they ask a question.

 

Dude, I'm not that good, Pete is the real genius. As technical as I can be, sometimes, its difficult for me to always put it in mathematical terminology. Hell, I only got a B in fluid dynamics at University of Michigan. Sometimes I hate theory. You always have to try and explain everything, and on a web forum, at times, its just difficult to get a point across. But in the end, its still just a web forum.

 

true. to a point.

im the noobie's trial by fire lol

 

Theoretical science is sometimes much more difficult than real life science from some of my experiences. But hey, that's what we are here to do right? Learn and gain experience. From what I have read Mac is the man for most things technical!

 

I'm nothing compared to Tony the Tiger. Now he is a mad scientist!!!

 

Any man with the garage he has is definitely the man!

 

ok , thanks but look some dynos off these turbo and compare...

this forum is great but some users is like my chinese ebay pistons.. a peace off crap.

 

snyapse has dynos of 50s and 57s on b16s if you google around a bit. either one works, the 50 just comes on a little earlier

 

Dynos are one gear, one pull, optimal conditions. Many of us have owned the cars with that turbo on it.

 

don't forget about that law degree either lol

 

ok i understand.. but why on 80% off dynos on google the 57 trim as making more power on low rpm and medium rpm?

 

From U of M?

 

Depends upon engine size and application. Remember, a dyno doesn't tell everything. It's ONE GEAR B16s get much better lower rpm band use with the 50 than the 57. It says nothing about you going through each recovery gear

 

You also didn't specify your power goals, that will also help make the decision a little easier for you. TheShodan is right, if the power goals you are looking for are around 250-300whp then the 50trim is the best bet in my opinion.

 

Concentrate more on the torque figures, rather than power.

I have used both the 50 & 57 trim turbos on the same engine (LS equipped Integra). My cousin has used both turbos on the same engine (B16 equipped Hatch). I'm using this example, because all turbos had the same size exhaust housing (.63 a/r), which area over radius sizing plays a role in power delivery, when it comes to these standard sized applications, and most importantly, both engines were bone stock, as static compression, cams and intake manifold selection will play a role, as well.

My LS reached maximum pressure (full spool) 300 rpm's earlier with the 50 trim than the 57. It was roughly the same with my cousin's hatch. Even though the gain in spool on his B16 was later in the rev range than the LS (due to the LS's superior stroke & anemic flow nature of the head), it illustrates that the 50 trim will always put the torque in an earlier part of the rev range than the 57, for a little more usable powerband, all other things being equal. The gains in spool may not seem like much, but this example was just given for technical purposes, based on real world experience.

 

tanks for the explanation men!

i recently order a precision 5031 but i received a precision 5431b ! ind 54mm exd 75 and exaust its a normal t31 turbine ar 63.
the turbo looks very good.. anyone have seen results about this turbo compare whith a t3/t4 50trim?
some pics:


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its for my new engine. suzuki swift gti 1.3 16v whith cp pistons forged rods forged crank , ported head 270 264 10.5lift cams b16intake manifold and tb and other goodies.one the past i use a t3/t4 50 trim ar 63 ebaypower but a broken the turbo at 1.3bar.the ebay t3/t4 50trim ar63 starts spool at 3000rpm and have full boost 1.2bar at 5500rpm
what do you thing about 5431b for this engine?my gool is 350hp

 

You should have received the 5031. Send it back and don't use it. The 5431 tends to surge at those boost levels over 1.3 bar. There is another thread on it here . The 5431 is a v1/v2 trim turbocharger. Read the rest.

https://honda-tech.com/forums/forced-induction-16/turbonectics-t3to4b-good-350-400-hp-2928345/

Send it back. get a 5031

 

hum... but the turbine sizes are the same the only diference are billett compressor turbine i think. what trim this 5431e have?

 

they told me it's out of production when i wanted one

they do still have the 3231e & 3431e

both of which i considered sending back my 5431b to get, then thought about it and realized i'm only using a .7bar spring and staying there so it really doesn't matter much.

how much power are you shooting for mr OP?

actually, they just released that 5431e last month as well and it uses their new turbine design, they now have both a 5431b and a 5431e

 

The Original $599 introduction 5431 is out of production. They now have a new billet one I believe (that Swift T may have), but is not part of the $599 special. If this is the new Billet wheel version, then please disregard my link to the v1/v2 turbocharger. Precision seems to reclassify once a stock production is do longer available.