Big T28 Turbo

[herostar]

I'd like to hear from some people who've used the BIG28 and didn't like it.

 

[big green]

I'd like to hear from some people who've used the BIG28 and didn't like it.

Well thats not going to be me, because I love my big28 I can't wait to hit the track next spring

 

[GPTourer]

I thought about the Big28 for a while, but its high price was always a deterrent - even though getting an Evo3 with an install kit cost a little more, I figured I'd rather have a tried a true Mitsubishi turbo and I figured I'd need an install kit one of these days anyway for other possible upgrades. I also read a lot about how quick the turbo spooled and figured it was a bad idea for a FWD.

Now that I have it, I don't see myself every wanting or needing anything else. I realize I have a long way to go before I can come close to maxing this turbo out, and I haven't even scratched the surface of what it can do. For what my goals are, and the fact I spend most of my time on the street with 93 octane gas - I can't imagine anything being a better choice, since it has the potential to do 11's. Slowboy even recommended it to me over one of their more expensive 2G20g's that I was considering, and then they suggested a GT11 (or 12?) if I thought I'd need more. Maybe someday, but I can't see it. IMO it is a perfect match for a 2.0L FWD and 93.

 

[GstPat]

I like my FPbig28 but i don't have all the support mods yet to it so it still has some power to it. Haven't had it long enough to get some great runs in it but my best was 14.2 at 102. My mph is nice but my 60 foot is fugly. Still have stock smic and stock injectors. 15psi atm (same as my t25) and i almost gained .5 on my time. Best with t25 was 14.66@96. (better 60foot 2.4 vs 2.45) Just need to get better at driving and i bet i can hit the 13s.

 

[Generation X]

Just check out the times list over at www.dsmtimes.org and compare some of the times between the two. If you will notice there are quite a few 2g awd's running low 12's with the FP Big28, and a few fwds are busting 12's as well, with good traps. Most of the EVO III's best times seem to be all on 1g's, with there better flowing tb, intake manifold, and last but not least the 1g head.

 

[blitz43]

get a magnus intake manifold that way u won't need a 1g head

 

[blitz43]

But that's just it, that's where things change. A T-28 or FP Big 28 have all Garrett parts in them, and are not hybrids - its just the t-28 is just untouched by anyone and from what I understand, is like a T-25 that can hold boost to redline. A FP Big28 has some thing done on the inside with bigger Garrett wheels to make a better turbo.

The "killer" stuff, is designed to BEAT the T-28 or Big28. Its designed to get a Mitsubishi turbo onto a 2G car without an install kit. Its a hybrid with either a T3 compressor cover and your choice of 16G, B16G or 20G on the inside or some sort of clocked cover with elbow welded on.

I was in the market for one not too long ago, but chose to go with an Evo3 and install kit instead.

i've been looking around i've sent an email to extreme psi about this

but who sales the t28 killer with garrett and 20 g internals???
etreme psi specs of their killer str8t of the website

Application : 95-99 Mitsubishi Eclipse Turbo
Compressor Wheel : Big 16G
Turbine Wheel : Big T28
CFM : 550 CFM
Max HP Rating : 380 HP


help me out here
who sales them

 

[pboglio]

How can the killer be a killer if the Big 16g compressor doesn't flow more than the T28? The Big t28 or whatever everbody calls them already has a compressor wheel that flows 550 cfm. The Big 16g wheel is no upgrade for it. Maybe a bigger TD05 compressor housing, td05 turbine housing, and td05 turbine wheel are better but not the compressor wheel. At this point why not have them drop in a 20g compressor wheel while your at it?

To the original poster, any T28 is a great upgrade, with the 360* thrust bearing it's extremely durable, flows enough for 375-400 crank h.p. tuned out, quick spool up, easy to install, and now is relatively inexpensive ($719 new, $599 using your t25). I've owned both a 16g or t28, buy the one that fits easier and is cheaper, they are that close in performance and durability.

 

[heavyD]

I'd like to hear from some people who've used the BIG28 and didn't like it.

Had an FP28. Hated it.

 

[98eclipseRS]

Had an FP28. Hated it.

because itw as to small or because it was a POS? I liked it up unitll the point where I needed more it was still a great turbo however.

 

[heavyD]

because itw as to small or because it was a POS? I liked it up unitll the point where I needed more it was still a great turbo however.

Ha Ha! Hate's a strong word but you say you liked it until you needed more, well it took me about 2 weeks after getting it to realize I needed more. Six months later I drove a Talon with an EVOIII 16G (they may look close on paper but they aren't in real life) and got really pissed that I passed it over for a T28. I just heard all of these threads about how great a turbo it is and thought it would suit my needs. Well it didn't and I won't ever recommend it to anyone unless they need to replace their T25 and aren't looking for much added performance.

 

[GPTourer]

but who sales the t28 killer with garrett and 20 g internals???

The orginal Slowboy 2G20G was a "killer" style turbo with 20G insides, and was a concoction they resold from turbochargers.com. They've since changed how they make them, so I can't quite say what category they fall under now.

 

[AdoreGSX]

Say I have a 97 gsx with hard intercooler piping running a 1g bov, k&n filter, and wanted to upgrade just a big, i'm not looking for a lot of power, what would I need? say I put a t28 on, what supporting mods would I need?

 

[herostar]

Everyone brings up the FP gsx as it is in their ad but that car is an abnormality as getting into the 12's is even a chore with this little turbo. The EVO III 16G flows more and don't just go by the flow rates, ask people who have gone from a T28 to an EVOIII 16G and you will find that most will say its far better. I think alot of the people that think the T28 is awesome has never driven a DSM with a 50 trim and have no idea what fast is. It only took one drive for me and I was ordering an FPgreen pronto.

Like I said before, if you are only looking for a mild upgrade and don't plan on taking the car to the track very often. The T28 will do fine. It's the people that prop it up to be a big power upgrade that bothers me because it is misleading.

Well if you look at my mod list I've tried a few setups with my car. I still really like the big28. You can pick up a used one (like I did) for about 500 dollars. When comparing it to a 16g series turbo don't forget to mention that the BIG28 spools full boost nearly 500 rpm sooner, yet still makes the same power. Why people would switch (notice I don't say upgrade) to an Evo III 16g from a BIG28 I don't know. From a small 28 I can understand, but the BIG28 really is a totally different turbo. Almost anyone can get the same times out of a Big28 as a 16g. 12's aren't really that hard to get to at all.

 

[98eclipseRS]

Say I have a 97 gsx with hard intercooler piping running a 1g bov, k&n filter, and wanted to upgrade just a big, i'm not looking for a lot of power, what would I need? say I put a t28 on, what supporting mods would I need?

you wouldn't need anythign to run at stock boost levels, I would really recomend a full turbo back exhaust. If you want to turn up the boost then you will need 550's and an safc and shortly after either a supra sidemoutn or a fmic cause that turbo will heat soak a stock sidemount with the quickness at anything above 15psi.

 

[AdoreGSX]

so i can just buy a t28 and bolt it on there running it at 15psi, and how would this benefit me over the stock t25?

 

[GPTourer]

It would hold boost to redline and it would flow more air.

 

[98eclipseRS]

It would hold boost to redline and it would flow more air.

yup yup

 

[AdoreGSX]

where can i find one and is the t28 different than the bigt28?

 

[98eclipseRS]

where can i find one and is the t28 different than the bigt28?

they pop up in the classifieds section quite often, you can also check fp's site I don't know if they still have the special going, but for a while you could pick one up new for pretty cheap.

Well, it depends...a true t28 is different from the fp big28. A t28 is not much of an upgrade over the t25 and is still fairly small when it comes to the amount of air it pushes. The big28 however, has massively larger wheels than the t25 but is still housed in the t25 housing so bolting it on to a completley stock car is possible, although not recomended.

 

[herostar]

where can i find one and is the t28 different than the bigt28?

They are completely different. The BIG28 has larger wheels and larger housings. I son't remember where, but there was a picture floating around the classifieds of a BIG28 vs. T28. The t28 uses the stock housings, while the big28 has a completely different exhaust housing as well as a bigger inlet/outlet on the compressor side. I know this isn't quite the right example to use, but the t28 flows just a bit more than the 14b, while the big28 is more like a 16g (with faster spool on both 28 variants than the 14 and 16 turbos.) If someone wants to but in with actual flow numbers that would be fine, as this is just a rough example.

 

[pboglio]

The original T28 from Forced Performance flows alot more than a 14b, flows about the same as a small 16G, maybe a touch more. The FPBig28 has a revised turbine wheel that flows more than the original FPt28/28. People claim another 20-30 h.p. going from a FPt28/28 to a FPbig28 but I don't believe it myself.
Compressor and Turbine housings have always been the original T25 for all of the DSM T28s, just machined for the larger compressor and turbine wheels.

I'm looking at my datalog (FPt28/28) and I get 15 psi in 3rd gear by 2950 rpm. Looking at a well tuned EVOIII 16g datalog I'm seeing 15 psi in 3rd gear by 3050 rpm. EVOIII 16g spools as fast as any T28. Aside from an easy install, the EVOIII 16g has made all the T28 turbos obsolete in terms of performance, IMHO.

 

[AdoreGSX]

alright, so what would you recommend for my setup...i belive you have to modify a few things for the 16g correct? Remember I dont want that much power. When I put this turbo on, I'll be keeping it at 15 psi or lower most of the time.

 

[Agent11br]

all you have to modify bare minimum is:

oil feed line (swap new one in), licp (need a j-pipe setup), reverse the t-25 waterlines and slightly bend, and just file/dremel/drill out the oil return line mouting holes a tad.

I had never done a turbo install or swap before and using the 16g instructions from the vfaq, my buddy and I had my b16g w/ rre hacker tweaker kit on and running with no leaks the FIRST time in less than 6 hours. That included swapping on my tubular O2 housing, flushing my coolant (might as well since you loose over half of it), changing the oil (kinda have to), and running to the autostore 3 times for various little things.

I'd have to say that before I did this I was kinda nervous and had no clue what to expect so I just read and re-read the vfaq a few times and went for it. Man, it was WAY easier then I thought. Just remember: a breaker bar and pb blaster are your BEST friends

 

[pboglio]

Manual boost controller, Fuel pump upgrade, 2.5" or 3" downpipe, 2.5" or 3" testpipe or highflow cat, 2.5" or 3" catback exhaust. Port your own or purchase a ported 02 housing for sure, ported Exhaust manifold and ported turbine housing optional. Thats it for 15 psi. And of course the EVOIII 16g turbo. This gives you a lot of room to grow powerwise later, with no penalty in lag or cost. Fuel injectors, Fuel computer, FMIC, etc can come later when you plan on upping the boost.