Ported T-28 versus ported 14b on 2g

[calico]

Which would give the most noticeable gains on a 2g? I have found good deals on both and would like some opinions on each. The t-28 is a straight bolt on which is one good thing, but the ported 14b is much cheaper.

 

[pnishr]

"more efficient" is gonna be a sticky argument on that... Maybe more efficient in a particular range of boost or airflow, but the map for a 28 (I'll see if I can find one) has some pretty decent (if not small) ranges. Will it ever act like a "50 trim?" no, but for what it is, it does a great job. And it can do what MOST people do with their 16g. For most, it's a stepping-stone turbo (aren't they all), but it sounds like for this guy, it's all he wants for his DD street-car.... for now....

And, though, yes, the compressor housing was at some point the same as a T25, they are not the same on the end product. Just hold two up next to each other, and that would be easy to see. When they say "modified compressor housing," they mean it.

 

[jumpfroggy]

So I'm missing something.. The T25 / T28 are typical Garrett flange sizes.. They don't define flow for a specific turbo. Course, I'm a noob.. which is why I'm in this forum.

It's confusing. Our turbos are "T25"'s, which is also the name of a flange. Our T25 turbos do not have typical Garrett T25 flanges (we have mitsu flanges instead).

The T28 they're talking about is the Forced Performance Big-T28, which is a ported out/big compressor version that is in the same ballpark/category as the 16g family (for reference). It's also very different from a normal "T28 Turbo", which flows a bit less. An to add in another monkey wrench, a normal T28 can use a T25 flange, while I think the FP BigT28 uses the mitsu flange (which is why it's bolt on... someone correct me here?).

Which would give the most noticeable gains on a 2g? I have found good deals on both and would like some opinions on each. The t-28 is a straight bolt on which is one good thing, but the ported 14b is much cheaper.

Yeah, I'd say the FP BigT28 is the clear winner. When I was researching 16g family vs. BigT28, the consensus I got (from both opinions and air flow ratings) was that the T28 would spool faster and be a more fun street turbo, while the (evo) 16g would have (slightly!) more top-end capability. But if you're just looking between 14b and BigT28, it's an easy win. Plus, T28 is bolt on (not like 16g), so the difference between 14b and T28 is just whatever the price. There was a used T28 for sale for $300 near me a while ago... at prices like that, it's the hands-down winner.

 

[gsxeclipse97]

Like i said before that turbo is great for throtle response but, who just steps on the gas if you want to go faster. I think that would have most of us down shift to 3rd and if you have an e316g the turbo spools instantly no lag at all. But if you are comparing this to a 14b and you really don't want to get the 16g then the big t28 is a much better turbo.

 

[DSMunknown]

"more efficient" is gonna be a sticky argument on that... Maybe more efficient in a particular range of boost or airflow, but the map for a 28 (I'll see if I can find one) has some pretty decent (if not small) ranges. Will it ever act like a "50 trim?" no, but for what it is, it does a great job. And it can do what MOST people do with their 16g. For most, it's a stepping-stone turbo (aren't they all), but it sounds like for this guy, it's all he wants for his DD street-car.... for now....

And, though, yes, the compressor housing was at some point the same as a T25, they are not the same on the end product. Just hold two up next to each other, and that would be easy to see. When they say "modified compressor housing," they mean it.

T-25 Compressor inlet
T-28 Compressor inlet

T-25 Turbine outlet
T-28 Turbine outlet

T-25 full view of compressor-side housing
T-28 full view of compressor-side housing

T-28 turbine housing inlet vs. T-25 turbine housing inlet
T-28 turbine housing inlet ported vs. T-25 turbine housing inlet unported
Full view of T-25 vs. T-28 compressor housings (doesn't do the T-28 justice)





EDIT: Some of you may be interested in reading this link as well.

 

[pnishr]

Thanks!

 

[DSMunknown]

Thanks!

Always happy to help.




I still haven't come across a really good comparison photo of the compressor housings of the T25 and T28 as of yet. Perhaps someone else can help us out here.

 

[calico]

What's a good set of cams to use with the T-28? I was looking at Brian Crower 272's but they are on backorder until April?????? Anymore cam options? (besides the expensive hks cams)

 

[DSMunknown]

What's a good set of cams to use with the T-28? I was looking at Brian Crower 272's but they are on backorder until April?????? Anymore cam options? (besides the expensive hks cams)

Just come out and say it. What you're really asking is "Tell me what to buy! Tell me what to do! Tell me so I don't have to think for myself!"

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[calico]

Just come out and say it. What you're really asking is "Tell me what to buy! Tell me what to do! Tell me so I don't have to think for myself!"

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What the hell did that mean?

 

[gsxeclipse97]

If i had to take a guess i think that he's saying that you are asking to many questions. But thats the point of the forum.. get information from people who have experince and their opinons. being that i have no experince with cams i don't have an anwser for that. I personally think that those cams are to big for that turbo.

 

[calico]

If i had to take a guess i think that he's saying that you are asking to many questions. But thats the point of the forum.. get information from people who have experince and their opinons. being that i have no experince with cams i don't have an anwser for that. I personally think that those cams are to big for that turbo.

I don't understand people like that. If he didn't want to answer he should have not posted. What a waste of bandwith.

 

[Rice Over Wheat]

What's a good set of cams to use with the T-28? I was looking at Brian Crower 272's but they are on backorder until April?????? Anymore cam options? (besides the expensive hks cams)

This is my setup right now. I noticed no loss on low-end, but I also am auto and already have a lot of torque down low. Top end had noticeable gains, however the T28 runs out of breath where 272s give their best dividends. You need a bigger turbo more efficient at higher rpms to realize those race cams' potential. I'd stick with 264s if you want to keep a T28. I'm upgrading to 50 trim as I now have all the supporting mods to bring out the real power.

You'll see some gains though. For $300 BCs, I'd say MAYBE it's worth it. HKS, no. I did it only because I knew I was going bigger and wanted ALL the supporting mods for the next bigger class of turbos.

 

[calico]

This is my setup right now. I noticed no loss on low-end, but I also am auto and already have a lot of torque down low. Top end had noticeable gains, however the T28 runs out of breath where 272s give their best dividends. You need a bigger turbo more efficient at higher rpms to realize those race cams' potential. I'd stick with 264s if you want to keep a T28. I'm upgrading to 50 trim as I now have all the supporting mods to bring out the real power.

You'll see some gains though. For $300 BCs, I'd say MAYBE it's worth it. HKS, no. I did it only because I knew I was going bigger and wanted ALL the supporting mods for the next bigger class of turbos.

Great informative post...thanks....

 

[jumpfroggy]

Just come out and say it. What you're really asking is "Tell me what to buy! Tell me what to do! Tell me so I don't have to think for myself!"

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Hah! Like there's any other reason to post here?
"I wanted to post my thoughts on my setup, but please don't comment. Just bask in the wisdom of my choices..."

Me personally, I never post questions here. Questions are for the weak!

 

[DSMunknown]

What the hell did that mean?

If i had to take a guess i think that he's saying that you are asking to many questions. But thats the point of the forum.. get information from people who have experince and their opinons.

I don't understand people like that. If he didn't want to answer he should have not posted. What a waste of bandwith.

Hah! Like there's any other reason to post here?

You failed to grasp what I was alluding to.

 

[calico]

You failed to grasp what I was alluding to.

If you have something to say...say it...i don't have time to play childish games..personally, i could care less what you have to say....but that's me.......

 

[Eastwood95]

Getting back onto the topic......

If the T-28 was such a great turbo, why is hardly anyone using it?
14b's still make a very noticeable power gain vs. T-25's, and they are dirt cheap. 16g's, and Evo 3 16g's, are even more affordable and produce the same or more power.

Comparing the T-28 to 14b is easy on paper, the T-28 is bigger.....but
Check out the timeslips on www.dsmtimes.org and look at how many 14b's and small 16g's are outrunning BigT-28's.

I say stick with MHI turbo's......get a 14b, port it, get all your supporting mods to max it out, then upgrade to an EVO 3.

 

[pnishr]

Getting back onto the topic......

If the T-28 was such a great turbo, why is hardly anyone using it?
14b's still make a very noticeable power gain vs. T-25's, and they are dirt cheap. 16g's, and Evo 3 16g's, are even more affordable and produce the same or more power.

Comparing the T-28 to 14b is easy on paper, the T-28 is bigger.....but
Check out the timeslips on www.dsmtimes.org and look at how many 14b's and small 16g's are outrunning BigT-28's.

Simple... availability. That, and the 14b's and 16g's have, what, 15+ years more worth of seniority? People use them, because people HAVE used them. That, and there are WAY more of them on the market, so they're cheaper. Certainly the 14b. I don't think that's a very good argument.

How long has the FP 3065 been out? not long. I bet there are less of those around than the 16g too, and they're definitely more expensive, but that's not a reason to not run a turbo. By the way, that time posted on FP's site about 11.8 on a full weight GSX IS ACCURATE. Just a damn good driver, and a damn good turbo. You'll also find a lot of these REALLY fast 14b and 16g cars are gutted to hell... besides the fact they're lighter than 2g's stock. So, as a basic bolt-on replacement, I don't think there's ANY reason not to go with a 28 variant.

 

[Rice Over Wheat]

Plus he answered his own question. Far more people have been using 16G variants and 14bs so by sheer numbers more of them should be climbing the rankings. Big T28 is a great TRUE bolt-on upgrade for 2G owners with mild or no mods. The problem is that this makes the turbo very expensive for its size. And this last point is why those who are planning to make over 300 whp on their cars go with a different option as making such power requires more supporting mods, more modification, and therefore more $$$.

 

[calico]

Check out
www.gpopshop.com

Great prices on T-28 turbos...especially since turbochargers.com just raised their prices on their 2g solution by $100.

 

[Rice Over Wheat]

I checked out that site and thought it was a bit misleading. They advertise their regular core swapped T28 as cheap, but if you order a true ported Big T28 setup like FP or AGP's specs, you end up with another $700+ turbo. Core swap helps reduce this a bit but they don't say how much that is for the full package. AGP does core swaps too.

 

[T is for TURBO]

Here are some comparison photos of a t-25 to an unported FP-big T-28
As for the T-28. At 14-15 PSI on stock fuel, with a cat back, FMIC and stock airbox on a 6 bolt 2G with no balance shaft and FWD, I spin the tires in second gear at about 45MPH nearing redline. The T-28 really shows it's potential at higher boost levels, such as 21-24 PSI. It pulls hard and strong all the way to redline. I can pull on my buddies 14b all day long.