T28 a/r .80
 

I'm planning to get a t28 a/r.80 off a sr20det. I will be mounting it in a b16a. Does anyone know when this turbo will start to spool? What RPM? Is it the right size for 6-12 psi of boost? What is the max boost of this turbo?

Thanks in advance!!!

Re:T28 a/r .80
 

maybe its just me but i think that turbo(a/r .80) is gonna have a shitload of lag if you plan on driving it on the street

Re:T28 a/r .80
 

A t28 is pretty small for a b16 right? But the one they offered me is the ar.80? any idea when it will spool in a b16 stock comp?

Re:T28 a/r .80
 

6000?

Re:T28 a/r .80
 

ok thanks for all the replies!

Re:T28 a/r .80
 

i guess a t28 AR .8 wont be the right turbo for the job. how about the t28AR .63 is this a decent size for a b16?

Re:T28 a/r .80
 

Whoa, whoa, whoa. I usually just troll this site, but you guys are really misinformed here. First of all is that a/r for the turbine, or the compressor? IMO, either one is going to be too small for a B16. This turbo is smaller than a T3. I will be going with a .86 a/r t25 turbine on my B20, which flows alot LESS than a B16. For a B16, I would think you would need a T25 exhaust a/r of at least .86, and a T3/T04B compressor. The unit from a Pulsar GTi-R would be the only off the shelf unit available to you with these specs. It will in no way be too big. If anything it will be too small. If you are looking for quick spool/low boost go with a T28(t25 turbine/t3 compressor hybrid) If the unit has a .80 a/r on the compressor, it is a straight T25. Probably from a bluebird. Too small, IMO. DO more research.

Re:T28 a/r .80
 

Absolutely not. Please don't misinform people. You aren't even stating which a/r you think is too big. The a/r that matters most would be the turbine/exhaust housing. I think you may be confused by the usual T3 Exhaust housing a/r categories:
.49=low end/falls off .63=midrange/balance .80=top end/lag These are for T3 units. Completely unrelated to T25 units.
Consider a B16 is 1.6 liters and has a higher compression and much better VE than any SR20 engine, it also has about 1000 more rpm to work with. This turbo is nicely sized for an SR20, but would be on the verge of too small for a B16. To put it simply, a B16 produces much more exhaust energy than an SR20, and can easily spool this turbine. You would not want to go smaller than .86 a/r on the turbine side with a T25 turbine housing. As for compressor sizing. Usually, the bigger the better within reason, and taking your space/boost requirements into consideration. If you do not understand all of this, please go do more research. If you are done disagreeing with me, I will go back to lurking in the shadows. Just know I am always ready to jump out when people need T25 info. I know too much... Don't make me get ABAZ in here...

Re:T28 a/r .80
 

ok please enlighten me with more t25 a/r info and what it all means if you have the time

Re:T28 a/r .80
 

The guy told me its a t28 AR.80 from a nissan motor sr20det. Is it really or does it come with a t25 AR.80 compressor? either of the two, what RPM will it start to spool? will that be bigger than a tdo5 14b?

Re:T28 a/r .80
 

No, it is not a T28. What you have is a straight T25. The specific unit you have is from the S13 red top SR20DET. It has a .64 a/r exhaut housing(way too small) and a .80 a/r compressor(not big enough)A T28 is a hybrid turbo. It is a T25 exhaust housing, turbine, and CHRA, mated to a T3+ compressor, compressor wheel, backplate. S15 Silvia T28s use a T04B compressor housing. It would be spooled before 3K, I'm not positive where though, I think the TD05 might be bigger. It is more the exhaust housing that you should be concerned with. The B16 is capable of alot of flow and high RPM. A .64 a/r exhaust housing will be way to small and will choke off your top end alot. I'm not to knowledgeable about DSM exhaust housing sizes, but they use the wacky cm2 measures... Also, if you use a nissan T25(a real Garrett T25 flange, it will have a completely different flange than a DSM T25(Garrett built specifically for Mitsubishi). I.e. a manifold that fits one, will not fit the other. Alot of people are very misinformed concerning this, too.

Re:T28 a/r .80
 

Wow, thanks for the info. so any suggestion street use b16 turbo size?

Re:T28 a/r .80
 

Thanks for bringing some light to this subject jalopy..

I personally like Hybrid T3/T4's for B16a's.. check out cheapturbo.com

Lots of different sizes/trims availble.

Jeff

Re:T28 a/r .80
 

I just recently bought a T25 with .48a/r on the compressor side and .67a/r on the exhaoust side. Will this work good with my D16Z6 SOHC VTEC??

Re:T28 a/r .80
 

yup a t3/t4 hybrid would be nice. but im really after the street setup.

Re:T28 a/r .80
 

If you are hell bent on using a T-25 flanged turbo( non-DSM) the only unit I would go for would be the Nissan Pulsar GTi-R turbo. It has the largest exhaust A/R available. It also has a.60 60 trim T3 compressor. Very nice and streetable. I think this would work nicely. Would you be using an HKS manifold? They are getting harder to find. I got mine from NOPI.COM. Also, FYI, having gone this route, may I suggest going the T3 flanged turbo route. Trust me, it will be just as streetable and possibly cheaper. Just do alot of homework. Good luck.

Re:T28 a/r .80
 

I think I'll be getting the hks manifold for the t25. But the t28 and the t3 turbo will fit without a problem right?

Re:T28 a/r .80
 

No! There is no flange overlap. A T3 Falnge is different than a T25, which is different than a DSM, which is different than a T4, which is different than a, well you get the idea.. I hope. Please do more homework.

Re:T28 a/r .80
 

Lots of differnt flange styles guys, it can get very confusing..

T3
T4
Greddy
JDM Garrett T25

All look incredibly close.. They each have rectangular flanges. But do not bolt up.

Mitsu turbos mainly have circular inlet flanges.

Jeff

Re:T28 a/r .80
 

The Greddy, APEXi(SOHC), and HKS all use standard Garrett T25 flanges. They all make custom exhaust housings for thier applications. The T25 flange is more common than T3 in Japan.

Re:T28 a/r .80
 

So you are 100% postive the Garrett T25 flange is the same as a Greddy TD04 Inlet (rectangular) flange?

Re:T28 a/r .80
 

Yes, it is a standard Garrett T-25 flange. From what I know, Greddy had MHI make a custom exhaust housing just for them. I have yet to find another turbo with the same discharge. Also, APEXi did the same thing with IHI, custom housing. Also, HKS works with Garrett, who use the T-25 anyway.

Re:T28 a/r .80
 

Im confused! So, the HKS t25 manifold will fit what turbo? Will it fit nissan turbos? or any other?

Re:T28 a/r .80
 

9it should there both for t-25's

should fit any t-2 made by garrett which nissans are....