T28 decisions decisions....

[re-rx7]

Having some trouble selecting a t28. I see the garrett and the FP t28. My question is are there any differences? Do they both bolt on like stock? Im looking for 260-280 whp so I wanna go this way for the sleeper look. Lol. The price for the Fp28 is almost a grand. Where as i can get the garrett for around 800. Any input is appreciated.

 

[re-rx7]

With the spool already being quick on the the t28 I can hardly see the benefit of going ball bearing unless I was going Gt30r.

 

[H@xtGSX]

There is no such thing as spooling too quick.

Seriously though, I saw a GT28 off of a Nissan on eBay last week that went for ~$200. The compressor wheel had a chip, but that's it... $180 for a new Garrett wheel, and it was good. I bid on it several times, but was busy as it ended and lost it... Just throwing a few options out there for you. I like the ball bearing turbos, not just for spool, but also for the shaft not being 100% dependant on the oil sheath for operation... Especially if one were to have a sudden loss of oil pressure.

 

[4g63tc]

The FP B 28 is "technically" a t-28, stock looking, quick spool, and holds boost to redline.


Compare

stock T-25 330 cfm
stock garret T-28 flows 400 cfm
FP B28 flows 505 cfm

A 14B will outflow a stock T-28 at 405 CFM, so why not get your best bang for buck, and have a "stock" looking turbo that is on par with an Evo 3 16g?

Pricing is for a new FP Bt-28 on FP's site.

Stock garret t-28's start out from 800.00-1200.00 +.

 

[re-rx7]

Thanks for that graph. The Fp T28 really has me thinking...

 

[T is for TURBO]

Thought I'd schime in.

I have an FP Big T-28, and I love it. It spools sooo quick and pulls hard all the way to redline. At 18psi, I was struggling to keep traction in second gear from a roll with 235/55/17" Dunlop Direzzas (FWD of course). Boost holds rock solid, no porting required.

I really wanted to max it out, but I bought an FP Green this winter for a killer deal, so I don't think the t-28 will be on the car when the it comes out of storage.

 

[pboglio]

The FP T28's and all the other ones flow about the same, about 505 cfm standard.

The T28's are not that quick spooling. Mine spooled up around 3200 rpms vs. 3300-3400 rpms on the EVO3 16g.

The FP T28 comes with an upgraded thrust bearing, so durability I found to be very good. This turbo does not like +25 psi on any kind of cam upgrade, do not attempt it. It may have been the high turbine backpressure, but the engine did not like it one bit. You'll need an upgraded wastegate actuator or you will be very unimpressed with this turbo.

For what its worth, I pulled 40-41 lb/min out of an FPT28-28 on a subzero day, so it'll move some air if you set it up right.

What I didn't like was the weak performance on hot days. This is the achilles heal of this turbo, where an EVO3 16g is much less affected by ambient temp increases. On the T28 you will take big performance hits when the weather turns warm.

I think I owned one from 2001 up to 2009, so about 8 years of beating on the little T28. If your heart is set on one get it.

 

[re-rx7]

The FP T28's and all the other ones flow about the same, about 505 cfm standard.

The T28's are not that quick spooling. Mine spooled up around 3200 rpms vs. 3300-3400 rpms on the EVO3 16g.

The FP T28 comes with an upgraded thrust bearing, so durability I found to be very good. This turbo does not like +25 psi on any kind of cam upgrade, do not attempt it. It may have been the high turbine backpressure, but the engine did not like it one bit. You'll need an upgraded wastegate actuator or you will be very unimpressed with this turbo.

For what its worth, I pulled 40-41 lb/min out of an FPT28-28 on a subzero day, so it'll move some air if you set it up right.

What I didn't like was the weak performance on hot days. This is the achilles heal of this turbo, where an EVO3 16g is much less affected by ambient temp increases. On the T28 you will take big performance hits when the weather turns warm.

I think I owned one from 2001 up to 2009, so about 8 years of beating on the little T28. If your heart is set on one get it.

I figure with the 93 octane here i can get 280whp at about 18-20 psi on 560cc evo injectors. Affected that drastically by temp? What mods did you have and what psi? What kind intercooler? I like the turbo for 3 big reasons. It meets my goal, still looks stock and will still be reliable on the car.

 

[T is for TURBO]

I've got to say, I never noticed a difference on hot days. It's response is very strong on very cold days (sub zero to low teens), but if you were to ask me if I noticed a difference between 95 degrees vs 50 degrees, I don't think I could.

 

[4g63tc]

The FP T28's and all the other ones flow about the same, about 505 cfm standard.

The T28's are not that quick spooling. Mine spooled up around 3200 rpms vs. 3300-3400 rpms on the EVO3 16g.

The FP T28 comes with an upgraded thrust bearing, so durability I found to be very good. This turbo does not like +25 psi on any kind of cam upgrade, do not attempt it. It may have been the high turbine backpressure, but the engine did not like it one bit. You'll need an upgraded wastegate actuator or you will be very unimpressed with this turbo.

For what its worth, I pulled 40-41 lb/min out of an FPT28-28 on a subzero day, so it'll move some air if you set it up right.

What I didn't like was the weak performance on hot days. This is the achilles heal of this turbo, where an EVO3 16g is much less affected by ambient temp increases. On the T28 you will take big performance hits when the weather turns warm.

I think I owned one from 2001 up to 2009, so about 8 years of beating on the little T28. If your heart is set on one get it.

The new FP B28 comes with the upgraded WG actuator, Pushing +25 Psi on this turbo is really pushing the limits of it's capability

Mine spools up to 21 PSi, by 3k, and i'm an Automatic.

Ofcourse a Turbocharger/supercharger/na performs better in cold temperature, the colder ambient temp results in a denser charge.

My Gsx lives in + 90 degree temps for over half the year, and runs on crappy 91 octane, and it loves this little turbo. It's only been rebuilt once since 2002.

 

[re-rx7]

Thys discontinued now. They all come with stock 12psi wg. So either way i imaginr 21psi willbe it for me.

 

[pboglio]

I figure with the 93 octane here i can get 280whp at about 18-20 psi on 560cc evo injectors. Affected that drastically by temp? What mods did you have and what psi? What kind intercooler? I like the turbo for 3 big reasons. It meets my goal, still looks stock and will still be reliable on the car.

You should have no problems hitting 300 w.h.p. with your standard bolt-ons. I had speed density, a 23x10x3" ADFX extruded core FMIC, and everything else in my current mods list. It was a very torquey turbo, I broke 2 transmissions running that T28 so it tells you right there how much torque it could make.

Listen, if it meets your goals, go for it. It took me 8 years to outgrow that turbo and probably 3 years I simply plateaued on power, which meant I had no choice but to upgrade. I also had to listen to all the fan boys trying to convince me to buy a 50 trim and all that.

By the way, you need the upgraded actuator, that is not negotiable The difference int the "torque" hit with and without the actuator was huge. I wouldn't let my enemy run a T28 on the stock 12 psi actuator. I still have my Hahnrace craft T28 17 psi wastegate actuator with adjustable pre-load if you need one and can't find it new or something, I have no damned use for it anymore.

 

[re-rx7]

Whats the highest psi you would run with stock injectors and fp. I thinkin bout just running w/g pressure till i can get my fuel upgrades. So 12-14 psi.

 

[herms99gst]

If you chek out the classifieds i can save you a few hundred bucks.

 

[re-rx7]

You should have no problems hitting 300 w.h.p. with your standard bolt-ons. I had speed density, a 23x10x3" ADFX extruded core FMIC, and everything else in my current mods list. It was a very torquey turbo, I broke 2 transmissions running that T28 so it tells you right there how much torque it could make.

Listen, if it meets your goals, go for it. It took me 8 years to outgrow that turbo and probably 3 years I simply plateaued on power, which meant I had no choice but to upgrade. I also had to listen to all the fan boys trying to convince me to buy a 50 trim and all that.

By the way, you need the upgraded actuator, that is not negotiable The difference int the "torque" hit with and without the actuator was huge. I wouldn't let my enemy run a T28 on the stock 12 psi actuator. I still have my Hahnrace craft T28 17 psi wastegate actuator with adjustable pre-load if you need one and can't find it new or something, I have no damned use for it anymore.

Thabks for offer. I willlet you know. Pretty excited. Please give your opinion on my above post.

 

[herms99gst]

I dont know what the hell happend. I thought i was sending a pm.

 

[pboglio]

Whats the highest psi you would run with stock injectors and fp. I thinkin bout just running w/g pressure till i can get my fuel upgrades. So 12-14 psi.

Maybe 15 psi on stock injectors and pump, no more than that to be on the safe side. You would need an a/f ratio meter and something to verify injector duty cycles to make certain. But I think 15 psi on a stock setup with just the T28 would hardly flow much to overpower the fuel system. When you start running a 3" exhaust system, FMIC, cams, that is when airflow and fuel flow start taking off.

 

[re-rx7]

I have a 3'' exhaust, cat delete, and hahn Big SMIC. So I was thinking 12-14 psi. Im sure at even that boost level it will feel stronger than the T25 at 15.

 

[pboglio]

If you had 12-14 psi on the T28 it would not feel too good, based on my own experiences. The T25 at 15 psi might match it actually and spool faster doing it. Once you get the fuel/engine management mods going and crank the boost up to 17 psi, then the differences become apparent.

Where that break even point is about 28 lb/min, that is where the T25 compressor can't supply the engine anymore and the T28 has a chance to pack on the airflow above and beyond that. Based on your current mods and "boost" level, I don't think your flowing much more than 28 lb/min if that. Need a logger to see what is going on at least. YMMV.

 

[re-rx7]

Well im getting the turbo put on and then buying the Injectors and Fp the next week. I guess what i was getting at was the fact T28 would hold that 14 psi all the way to redline vs the 10 psi i see with the T25. My mods are intake, bc, uicp, big smic, stock dp, cat delete, 3'' catback, ecu flash and neo.

 

[4g63tc]

Well im getting the turbo put on and then buying the Injectors and Fp the next week. I guess what i was getting at was the fact T28 would hold that 14 psi all the way to redline vs the 10 psi i see with the T25. My mods are intake, bc, uicp, big smic, stock dp, cat delete, 3'' catback, ecu flash and neo.

Yes, it will hold pressure to redline.

 

[re-rx7]

Thats the difference im talking about. Iam however trying to get my injector and pump the same day.

 

[re-rx7]

Turbo is on, 560cc injectors and the wally 255. I had a custom 2.5" dp made to go with my 3" exhaust and now i have boost creep. I hate to go back to the stock dp because it will limit the power i can make. Any suggestion on curing it or is it basically the same as a 16g. Port it or get the fuel to run those psi's.

 

[H@xtGSX]

You can port, run an external WG, a dump tube, or a knock suppressant (high octane fuel, water/alcohol/propane injection). That's about the extent of your options, I think.