Replacing t25 with t28BIG... question!

[Iryoku]

What are the limits of a big T28? How much whp can i achieve with it? Also what would be reccomended the Forced Performance t28 or the Garrett t28?

Need to upgrade my profile but I have a 95 gst now.

 

[2gGSX]

What are the limits of a big T28? How much whp can i achieve with it? Also what would be reccomended the Forced Performance t28 or the Garrett t28?

You won't be able to run a full garrett T28 without a lot of other mods, so go FP Big28. I also suggest getting their 17 psi wastegate with the turbo. Expect around 35 lbs/min max.

 

[Iryoku]

well i plan on getting other mods before i upgrade the turbo. But I just want to hit 300whp, i should b e able to do that with the t28 right?

 

[2gGSX]

With enough mods (and you're FWD) yes.

Although, you're a 1g. Is there a reason you're not going 16g?

 

[Iryoku]

I have to update my profile, I currently own a 95 GST, no more 1g.

 

[KottonMouthTSI]

I want to do the same thing in my Talon TSI...So people keep help him out, your helping me out also...

Id like to just put in a T28...What other mods do you need?

 

[2gGSX]

Follow the tech guide in the website and you'll be fine. The stock fuel system will be fine through around 15 psi, or if you figure out a way to log airflow (and good luck doing it without DSMLink), just under 28 lbs/min.

Personally, I ran my Big28 at 16 psi with a turboback exhaust, UICP and 1g BOV, filter and MBC on the stock fuel system for close to 8 months without any problems.

 

[KottonMouthTSI]

what did you run with that last set up you posted

 

[spoolup]

The turbo is a good turbo, you can enter my user name in the search field and see some of the post I have made about it. I currently flow 33-34 lbs per minute for a best of 12.83@110-111 in Salt lake City Utah, 4200 ft elevation. Even with the SAFC I ran a higher 12.8x (think it was a 12.88), thing is timing was about 22-23* with the SAFC setting I was using. Now with DSMlink I have the timing set to a max of 19 on 110. This run was done with all mods in profile. I have since added suspension (since I was all stock at the time), hope to have cams, and a different slick combo (ran a 23" M&H on 15 kkonigs rims, will have weld racing 13" rims and 24.5 M&H slicks) I alos have a 1G throttle body plus I pulled a few hundered pound out of the car as well. so I am hoping for atleast a 12.5 or better at this elevation. Guess I need to wait a few more months and see.

 

[prostreetdsmx1]

while the 28 is not a bad turbo i would really recommend a evoiii16g instead. We have used a few different 28's on the DSM and the EVO iii just has more kick and i think you will get more for your money with it, regardless of the install kit cost.

best of luck to you.

marti

 

[KottonMouthTSI]

with me, I dont plan on boosting that much. cause its my daily driver. I dont even know if I want a T28. i only do, so i can rape mustangs. and this ### in my class with a low rider V8 truck. I can already hang with his 450 hp. I wanna smoke him

 

[2gGSX]

I have not gone to the track yet with my setup, but it is good for 28 lbs/min airflow, most likely due to the wastegate spring being too soft.

 

[knighteclipse1]

I have to update my profile, I currently own a 95 GST, no more 1g.

Personally, I would go with the Evo III 16G instead, since its a FWD car. If it were the GSX I would go with the T-28 (alittle faster spool up) I believe there was a recent thread started on this exact same subject. Would do good to check it out (SEARCH), it gave all the reasons for why the 16G and not the T28 on a 2G FWD car.

 

[xcz504d]

If you're looking for 300 WHP, 16G... Evo 16G actually... If you put the big T28 on there you'll want to upgrade to a 16G in 6 months anyways

 

[2gGSX]

The difference in spoolup is negligible, the main difference the Evo 3 is considered superior is because it'll hold boost to redline and is good for low-mid 40 lbs/min airflow.

 

[bryanwheat]

I agree that the 16g is a little better for making more power, but which is going to last him longer on his daily driver. I have had a couple 16g turbo's, and never got any more than 6 months out of each one, they kept eating thrust bearings, i am not saying they aren't a good turbo, because they are, just seems that the life span on them is a bit short. If he is only wanting to make 300 hp, why not just go the old 14b route. You would have no problem making 300 hp on a 14b, it is actually an awsome upgrade for a 2g. You could just stray away from the usualy and get a t-3 super 60 from bullseye. That turbo is the shiznitt. Good up to 350 hp, and spools like a 14b. You can het one for under 5oo, and it is a direct bolt on, you will not need the fancy 2g j pipe adaptor that you would need for the 16g or the 14b, just need a 90 degree coupler to hook to lower intercooler pipe. You choice though man, i just thought to get your options open. Good luck on what ever you decide to do.

 

[spoolup]

The X vs X turbo things are mute. They are pretty close to the same, what I recommend is to go the cheaper route. Both the 16G variants and the T28 are good. I choose the BT28 since I got it used for a good price from a local DSMer. If you can find a B16G cheaper then go that route. but bear in mind the differences between the 2.

A) LICP, the 16G/14B needs a J pipe. dont forget the gasket
B) the oil return line is different at the turbo, you can slot the hole on the oringal 2g line to make it work or just buy a 1G return line. dont forget the gaskets
C) the supply line is also different so you will have to swap that out, but it is a good idea replace the supply line on a T28 as well, to prevent a possible problems later on. IE they like to break, may be clogged up ect. Plus for alot of vendors, to warranty the turbo they may state that a new line is required (check into it). if using a 16G dont forget the crushwashers
D) waterlines, its easy to bend them to fit the 16Gs, just follow the VFAQ. again dont forget the crush washers

So when accounting for cost concider these differences. But they are "ABOUT" the same, so go for cost and what you feel comfortable doing.

 

[2gGSX]

I agree that the 16g is a little better for making more power, but which is going to last him longer on his daily driver. I have had a couple 16g turbo's, and never got any more than 6 months out of each one, they kept eating thrust bearings, i am not saying they aren't a good turbo, because they are, just seems that the life span on them is a bit short.

I'm sorry, but this is just untrue. By far, the vast majority of 16g owners do not have any problems with their 16g's.

 

[xcz504d]

I'm sorry, but this is just untrue. By far, the vast majority of 16g owners do not have any problems with their 16g's.

What he said...

What are you doing wrong? How do you beat up a turbo in 6 months?

 

[pboglio]

What are the limits of a big T28? How much whp can i achieve with it? Also what would be reccomended the Forced Performance t28 or the Garrett t28?

Need to upgrade my profile but I have a 95 gst now.

300 whp is 350 h.p. or so. Big28 Limit is around 37.5 lb/min or so, from the actual datalogs I've seen. My own FPT28/28 has hit 36.5 lb/min. Your gonna need the usual mods. Cams, fmic, 3" exhaust, and a high pressure T28 wastegate actuator being a couple of my favorites.

My Forced Performance T28 has been so reliable its downright boring, over 5 years now. I attribute the longevity to synthetic oil for the most part and FP's 360* thrust bearing. I'm buying an EVOIII 16g myself in the next few months, another 50 h.p. on the top end with no lag penality is too hard to resist.

 

[bird man]

even with the 2g now just stick woth the 16g or better the evo 3 becuase it will spool faster and make the same power for a fraction of the cost

 

[TRBOBLU]

Id get the T28 cause it bolts right up and makes great horsepower. I ran 12.31@110 on the stock longblock with it so I can vouch for its power(that was w/o the upgraded actuator). If your gonna buy a turbo get it from Forced, hands down best turbo's made. Just my 2 cents.

 

[Spyderman7]

i had 30k miles on my big 16g before it finally took a crap.30k HARD miles.The little bit of extra effort to install one is well worth it.

 

[97EclipseGS-T]

I currently own a bored out T-28, I over heard something about a soft actuator... what do they rate them at? And what would be a good actuator to replace to make 350 hp..... here is an idea of what I'm running, trying to make the HP, tell me if I'll have a problem doing so......


Greddy Profec B @ 20PSI
Apexi SAFC (I need tunning and wideband along with datalogger and EGT)
Full Apexi N1 3inches, Turbo manifold, bored evo III housing
Greddy 24R intercooler with co2 sprayer
Bored T-28
Walbro 255 Fuel pump,Aeromotive AFPR, 660 injectors
Dejon pipes, Kn filter, 1G T.B, Injen pipe, Greddy BOV.


Thanks DSM community

-PAUL

 

[2gGSX]

-A rewired 190 lph fuel pump is more than enough to get you to your goal.

-As always, DSMLink is another option in terms of tuning vs AFC/logger

-You will not necessarily need FP's 17psi actuator unless you discover you have symptoms of the wastegate flapper blowing by early or not being able to hold 20psi boost in the upper RPM range. If you want to do this as a preventative measure then by all means go ahead, there is nothing wrong with that.