T28 horsepower

[TOVI]

hey guys! jus wanted to know how much horsepower you guys are getting from a t28 turbo. thanks

[corriganjoshua]

1000bhp...come on man use the search button i think this questions been asked 4 times in the last 2 days or google it

[02BRB20]

ever thought about typing T28 into the search box, I know its a concept that blows your mind but youre not the first to ever use a T28 turbo

[wangan_cruiser]

it depends on your tuning # are variables depends on how decent your motor is and upgrades. but like those 2 flamers said YOU NEED TO SEARCH.

[Prelude Guy]

Expect around 300whp. Best I have seen is 308whp, but there could be some higher.

300whp is good figure to go by. That is at 18psi.

555cc injectors
Z32 MAFS
Tuned ECU
FMIC
3" turbo-back exhaust
Highflow fuel pump

[snowmansent2hel]

search much?

[wvustud2003]

Expect around 300whp. Best I have seen is 308whp, but there could be some higher.

300whp is good figure to go by. That is at 18psi.

555cc injectors
Z32 MAFS
Tuned ECU
FMIC
3" turbo-back exhaust
Highflow fuel pumpi hope that was a joke. it's only good till about 260whp. you are thinkign of a gt28r. not a t28

[adictd2b00st]

yea like said above, ~300hp.... and what t28? s14/s15/bigt28/gt28rs etc that was pretty vague ;)

[adictd2b00st]

i hope that was a joke. it's only good till about 260whp. you are thinkign of a gt28r. not a t28

i had 298whp on an s15 t28 setup years ago, so its definitly possible...... and theres some on here with s14 t28's that have 280whp

[Def]

I made 297 rwhp on what is essentially an S14 T28(new Garrett GT2560R). No divider wall on the turbine.

[timtiminy]

Def: what was the rest of your setup like? and how much psi were you at to make that power?

[Prelude Guy]

i hope that was a joke. it's only good till about 260whp. you are thinkign of a gt28r. not a t28

Nope, I am not joking, and I am not thinking of the GT28R. LOL

The 308 whp is from an S14 with an S14 swap...with the S14 T28. I believe the member is on this site, definitely on FreshAlloy.

Video of his car: http://www.youtube.com/watch?v=J7ozuL5ZHvo&feature=related

[Z U L8R]

too small >=[

[Def]

Def: what was the rest of your setup like? and how much psi were you at to make that power?

Stock cams, exhaust manifold. Usual bolt-ons, 3" exhaust, FReddy intake mani. That was 18 psi in the midrange falling to about 16.5 psi towards redline(when it made the 296-297 rwhp, can't remember the exact number).

It felt faster and drew more MAF voltage when I added HKS 264 Step1 cams, but never dyno'd it after adding them. Have a GT2876R 0.64 A/R right now, it's way faster above 5k RPM.

[Def]

i hope that was a joke. it's only good till about 260whp. you are thinkign of a gt28r. not a t28

A GT28R and a "S14/S15 T28" is the same thing, some GT28R(GT2560R in the new naming scheme) have the cast turbine divider like S15 T28s depending on the part number.


They all make about 300 rwhp completely tapped out.

[wvustud2003]

A GT28R and a "S14/S15 T28" is the same thing, some GT28R(GT2560R in the new naming scheme) have the cast turbine divider like S15 T28s depending on the part number.


They all make about 300 rwhp completely tapped out.

everybody i have ever talked to and every site i've ever seen have said that the s14 t28 is different and maxes out around 260rwhp. and that the gt28r maxes out at around 300-310whp. shit if i can hit 300whp with just an s14 t28 then fuck the s15 one

[wvustud2003]

Nope, I am not joking, and I am not thinking of the GT28R. LOL

The 308 whp is from an S14 with an S14 swap...with the S14 T28. I believe the member is on this site, definitely on FreshAlloy.

Video of his car: http://www.youtube.com/watch?v=J7ozuL5ZHvo&feature=related

i've arleady seen this video. i could see 280 whp with a built motor and ems tuning etc. but 300whp?

[adictd2b00st]

you don't need a built motor for 280whp, just a healthy one

[Def]

everybody i have ever talked to and every site i've ever seen have said that the s14 t28 is different and maxes out around 260rwhp. and that the gt28r maxes out at around 300-310whp. shit if i can hit 300whp with just an s14 t28 then fuck the s15 one

It has the exact same wheels and housings(with the exception of the cast divider in the turbine) - so why would it make almost 15% less power?

[Silverbullet]

everybody i have ever talked to and every site i've ever seen have said that the s14 t28 is different and maxes out around 260rwhp. and that the gt28r maxes out at around 300-310whp. shit if i can hit 300whp with just an s14 t28 then fuck the s15 one

they just dont know what they are talking about. It may max out at 260WHP with 370cc S14 injectors though. I know someone who is making a little over 300HP on with GT28R with a really good tune.

[wvustud2003]

they just dont know what they are talking about. It may max out at 260WHP with 370cc S14 injectors though. I know someone who is making a little over 300HP on with GT28R with a really good tune.

i've heard of 315whp on the gt28r.

[blu808]

I was running 302 whp.

17psi.
s15 t28
s13 redtop
555cc inj
z32 maf
custom tune
fmic
silk road manifold
3" exh
fuel pump
hks step 1 cams

Stock intake manifold.
Almost no turbo lag.
Great setup for autox or smaller courses.

[timtiminy]

Def, I plan on using the GT28r (gt260r) in my setup (s13 SR) and am looking to make ~300rwhp. I have a Freddy intake manifold but i dont now how much of a difference it will make (power wise), in comparison to using the stock intake manifold. I heard it shifts the torque curve higher in the rpms and i want as much low end response as possible so i am torn between which manifold to use... any suggestions?

[timtiminy]

blu808, how did the hks step 1 cams feel in comparison to the stock cams? do you think it made an overall effect on te power you made? In my quest to keep low end torque and response i think it may make sense to stick with stock cams, although i have been considering BC 264's...

[cfrost]

i'm running a t28 with:
-tomei manifold
-megan outlet/downpipe/3" all the way back to 6" exit
-stock injectors
-safc/dyno tune - makes 270whp on dynojet, 250whp on dynojet

this is on like 11.5 or 12psi

[blu808]

blu808, how did the hks step 1 cams feel in comparison to the stock cams? do you think it made an overall effect on te power you made? In my quest to keep low end torque and response i think it may make sense to stick with stock cams, although i have been considering BC 264's...

The step 1 cams still retain a pretty much stock powerband. Just flow more cfm's. I think if you are planning on upgrading cams you should go with step 2s or bc 264's and a gt2871r turbo. If you are sticking with the t28 then step 1s or stock is fine.

Also keep in mind that with the step 2 or bc you need to upgrade your valve springs.

[Silverbullet]

i've heard of 315whp on the gt28r.

someone already stated it but GT28R and S14/S15 T28s are pretty much the same thing.

[Def]

The step 1 cams still retain a pretty much stock powerband. Just flow more cfm's. I think if you are planning on upgrading cams you should go with step 2s or bc 264's and a gt2871r turbo. If you are sticking with the t28 then step 1s or stock is fine.

Also keep in mind that with the step 2 or bc you need to upgrade your valve springs.

Not true. Duration affects the powerband more than lift. 264 Step1s make quite a big difference if you've got a turbo that can flow enough to take advantage of them. A T28 is tapped out on stock cams, so you don't get too much more with any cams on it, although there is a slight difference.

[blu808]

I was ref to the 256 step 1's.

He asked if they made a big difference over stock. I replied that it is a bigger difference if you go with step 2 264's or bc 264's.
And that the step 1's had a power band closer to stock than that of a step 2.

Also with the t28 if you used anything larger than step 1's it would just suck all the cfm's out of the turbo.

[Katsumbhong]

stock t28 (1~1.2 bar)

[Blacksilvy]

I dunno if this would apply here but just throwing it out here

http://forums.nicoclub.com/zerothread/213470

[Def]

I was ref to the 256 step 1's.

He asked if they made a big difference over stock. I replied that it is a bigger difference if you go with step 2 264's or bc 264's.
And that the step 1's had a power band closer to stock than that of a step 2.

Also with the t28 if you used anything larger than step 1's it would just suck all the cfm's out of the turbo.

Please stop spreading misinformation. I'll say it yet again, powerband is primarily dictated by camshaft duration, not lift. The difference between a Step1 and Step2 cam is lift.

...and "suck the cfm's out of the turbo," seriously?

[Def]

I dunno if this would apply here but just throwing it out here

http://forums.nicoclub.com/zerothread/213470

You're right, it doesn't apply here. What does a GT2871R have to do with a Gt2560R?

[blu808]

Please stop spreading misinformation. I'll say it yet again, powerband is primarily dictated by camshaft duration, not lift. The difference between a Step1 and Step2 cam is lift.

...and "suck the cfm's out of the turbo," seriously?

You apparently have no idea what I am talking about.
:cj:

[Blacksilvy]

yup was worried about that, saw the number 28 and got confused to an extent and such lol sorry guys :p

[Taj]

I am sure u heard about google Get to searching man

[Def]

You apparently have no idea what I am talking about.
:cj:

As a mechanical engineer, I will freely admit that the only time I would ever expect to hear "suck the cfms out of the turbo" is at the end of a geeky engineering joke. Since you're being serious, I think it's you that doesn't have any idea about what you're talking about.

I know plenty about internal combustion engines, so tell it to someone you can fool on the internet with your highly technical "sucking cfm's" speak. :ghey:

[bshotts]

As a mechanical engineer, I will freely admit that the only time I would ever expect to hear "suck the cfms out of the turbo" is at the end of a geeky engineering joke. Since you're being serious, I think it's you that doesn't have any idea about what you're talking about.

I know plenty about internal combustion engines, so tell it to someone you can fool on the internet with your highly technical "sucking cfm's" speak. :ghey:

I think what Luke meant by saying "suck the cfms out of the turbo" was simply this; as your IC engine is essentially an air pump (suck, squish, bang, blow) and the amount of air (CFM) entering/exiting is dictated by a number of things, with one significant factor being intake/exhaust camshaft duration/lift. Excluding the additional air volume supplied by a turbocharger, the engine can only move (flow) a given amount of air up to a certain efficiency (engine volumetric efficiency) usually being a 100% maximum VE at certain points in the powerband. By adding additional compressed air, as is the case of adding a turbocharger to the mix, you can essentially have greater than 100% engine VE by adding that additional volume of air (more CFMs).

However, if for example your air pump (IC engine) flows 500 cfm and your turbocharger flows 200 cfm, you theoretically have an air pump capable of moving 700 cfm. By adding camshafts with X duration/X lift, your air pump now flows 750 cfm alone, for example, and your turbocharger still flows only 200 cfm, your camshafts now dictate the maximum amount of air the engine can push through. This would most likely be the case for an engine with a relatively small turbo and insanely large duration/lift cams....ie an SR20DET using a T25 with 272 intake/exhaust cams. Does that make sense?

[Sileighty_85]

http://zilvia.net/f/tech-talk/194503-dyno-t28-r-t-sr-w-stock-ecu-maf-injectors.html

You can get more with proper upgrades and tune

[LongGrain]

this is an old thread..

[713kouki]

GT2871R, fmic, tomei supreme headers, 3' exhaust, Nismo 740cc injectors and a good tune ... thats what i'm getting for my s14 , easy reliable 300hp ?