T28 Roller bearing turbo's
26-05-2006, 04:49 PM
#1
Chasing Radders
Thread Starter
T28 Roller bearing turbo's
I am looking at a Series 1 that is running a T28 Roller bearing turbo on instead of a T3 as usual.
What are the pro's and Cons of these Turbos??
What are the pro's and Cons of these Turbos??
26-05-2006, 05:29 PM
#7
Tiff, try and find out who specced that turbo for the job its doing, if it was someone like Karl, then fantastic, cause its possible to make a great CVH with a T28 if you know what you are doing, if it was just picked at random off ebay, then steer clear.
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27-05-2006, 03:13 PM
#12
DEYTUKURJERBS
Originally Posted by abdr500
t3 will deliver more power
Even a standard S14 T28 will push 280bhp, will a standard RST T3 do that? Will it fuck.
Hell, a standard S13 T25 will push about 250, n thas a good bit more than a standard RST T3.
Numbers mean next to fuck all if you dont know the spec of it.
27-05-2006, 04:49 PM
#14
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agreed with steve, so jakes made 400bhp (saph cos) on a GT28, tell me a t3 will make that 
as said before in this thread make sure it's not a ebay america dodgy glued one
as said before in this thread make sure it's not a ebay america dodgy glued one
27-05-2006, 04:59 PM
#17
DEYTUKURJERBS
Ive got one that they also sell on american ebay for the S13, and ive dismantled it right down to its individual components to check the quality.
And its just as well made (hell, its damn identical) to a genuine GT28R from Garrett.
So dont think all stuff people sell on fleabay is junk, just cause its not wildly overpriced like most stuff.
(TBH, ive never seen any glued together T28s, only think ive seen was some T3/4 style turbos a few years ago, which were copies or copies, which was a bit bizzare)
And its just as well made (hell, its damn identical) to a genuine GT28R from Garrett.
So dont think all stuff people sell on fleabay is junk, just cause its not wildly overpriced like most stuff.
(TBH, ive never seen any glued together T28s, only think ive seen was some T3/4 style turbos a few years ago, which were copies or copies, which was a bit bizzare)
27-05-2006, 05:19 PM
#18
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Originally Posted by Stavros
Ive got one that they also sell on american ebay for the S13, and ive dismantled it right down to its individual components to check the quality.
And its just as well made (hell, its damn identical) to a genuine GT28R from Garrett.
So dont think all stuff people sell on fleabay is junk, just cause its not wildly overpriced like most stuff.
(TBH, ive never seen any glued together T28s, only think ive seen was some T3/4 style turbos a few years ago, which were copies or copies, which was a bit bizzare)
And its just as well made (hell, its damn identical) to a genuine GT28R from Garrett.
So dont think all stuff people sell on fleabay is junk, just cause its not wildly overpriced like most stuff.
(TBH, ive never seen any glued together T28s, only think ive seen was some T3/4 style turbos a few years ago, which were copies or copies, which was a bit bizzare)
27-05-2006, 05:35 PM
#19
DEYTUKURJERBS
heard? but have you seen? internet is full of crappy rumour, 99% of people who talk about these things have NO experience of them and just heard from someone else, whos usually heard from someone else, and so on.
there are shit ones, but from what ive seen of PROOF, they a massive minority rather than what it seems when you listern to the people with no actual experience of em.
either way, regarding the turbo on the S1, T28 means next to nothing.
could be made up of god knows what parts, i mean if it used a T28 exhaust housing itd need the manifold flange adapting, and if used 90% of T28 compressors itd need the inlet pipe adaping.
it totally depends what the spec is.
TBH it tells you nothing more (if anything, less :Cry: ) than saying a car has a T3 on it.
generally they better tho, prob at least as much power if not more, with as good if not better spoolup
there are shit ones, but from what ive seen of PROOF, they a massive minority rather than what it seems when you listern to the people with no actual experience of em.
either way, regarding the turbo on the S1, T28 means next to nothing.
could be made up of god knows what parts, i mean if it used a T28 exhaust housing itd need the manifold flange adapting, and if used 90% of T28 compressors itd need the inlet pipe adaping.
it totally depends what the spec is.
TBH it tells you nothing more (if anything, less :Cry: ) than saying a car has a T3 on it.
generally they better tho, prob at least as much power if not more, with as good if not better spoolup
27-05-2006, 05:40 PM
#20
Chasing Radders
Thread Starter
This is what i have been told-
engine had a full rebuild 1.5k ago...all recipts from jems motorsport...
it has a fully balanced and blueprinted bottom end..with h/d shells,
head is port matched and has a std new cam, lifters .all parts are new.also is gas flowed.
the turbo is a t28 roller jobbie....new.
modified down pipe and magnex exhaust
Running 181bhp,194ftlb@ 4100rpm-full boost@2200rpm(13psi),
engine had a full rebuild 1.5k ago...all recipts from jems motorsport...
it has a fully balanced and blueprinted bottom end..with h/d shells,
head is port matched and has a std new cam, lifters .all parts are new.also is gas flowed.
the turbo is a t28 roller jobbie....new.
modified down pipe and magnex exhaust
Running 181bhp,194ftlb@ 4100rpm-full boost@2200rpm(13psi),
27-05-2006, 05:47 PM
#21
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yes but when you consider that a company glues some of their turbos and you hear it about another one in the same production line it's beliveable, sorry if i was wrong, but why would a company simply glue some of the products together and then take time on one's what won't take all the abuse and boost pressure? it's unpredictable of what the products will be like and surely that's not a good thing when i turbos spinning at 100,000 rpm
27-05-2006, 06:26 PM
#23
DEYTUKURJERBS
JHW- if you knew the proper story youd know they DIDNT glue any of their turbos, thats my point
The glued together pics were COPYS of their turbos (well not a copy, just another ind of turbo with their name on it, not even with the right logo really), why anyone would copy a brand that isnt good is beyond me (well i think its cause they are a big name where the copys were also made, ie china), but there you go.
Same as there were fake MasterPower turbos a while back, which is daft too, but gave them a bad name even tho the real ones are just as good as Garretts (hell, the company was started by ex garrett employees)
The glued together pics were COPYS of their turbos (well not a copy, just another ind of turbo with their name on it, not even with the right logo really), why anyone would copy a brand that isnt good is beyond me (well i think its cause they are a big name where the copys were also made, ie china), but there you go.
Same as there were fake MasterPower turbos a while back, which is daft too, but gave them a bad name even tho the real ones are just as good as Garretts (hell, the company was started by ex garrett employees)
27-05-2006, 07:03 PM
#24
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oh sorry for the misunderstanding, so you posted the photos of the copied ones (copied one you bought but you bought the first copy?) so effectively they are a copy of a copy (not the one you bought)
my bad i'll take my
james
my bad i'll take my
james
27-05-2006, 08:26 PM
#25
Chasing Radders
Thread Starter
Originally Posted by TIFF
This is what i have been told-
engine had a full rebuild 1.5k ago...all recipts from jems motorsport...
it has a fully balanced and blueprinted bottom end..with h/d shells,
head is port matched and has a std new cam, lifters .all parts are new.also is gas flowed.
the turbo is a t28 roller jobbie....new.
modified down pipe and magnex exhaust
Running 181bhp,194ftlb@ 4100rpm-full boost@2200rpm(13psi),
engine had a full rebuild 1.5k ago...all recipts from jems motorsport...
it has a fully balanced and blueprinted bottom end..with h/d shells,
head is port matched and has a std new cam, lifters .all parts are new.also is gas flowed.
the turbo is a t28 roller jobbie....new.
modified down pipe and magnex exhaust
Running 181bhp,194ftlb@ 4100rpm-full boost@2200rpm(13psi),
27-05-2006, 09:31 PM
#27
I've got a GT28 on my escos as does Ian3dr and we both run over 400BHP on our cars, there is so many different types, mine has a modified T34 compressor housing that hides a T4 compressor wheel 
Gonna be changing next year though cause I want 450 ish BHP
GT30 or T38?? mmmmmm
Gonna be changing next year though cause I want 450 ish BHP
GT30 or T38?? mmmmmm
27-05-2006, 10:19 PM
#29
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People are confusing a T28 with a GT28......
That sounds fine Tiff. The standard T3 only spools to full boost at around 3k anyway so at 2.2k, it should be quite drivable. You could probably run that turbo at 18 psi held too which should take it well over 200bhp.
That sounds fine Tiff. The standard T3 only spools to full boost at around 3k anyway so at 2.2k, it should be quite drivable. You could probably run that turbo at 18 psi held too which should take it well over 200bhp.
27-05-2006, 10:20 PM
#30
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Originally Posted by abdr500
Stavros
there are so many different type of t28 and t3 turbo so its not utter shit
and rs turbos dont come with t3 as std
there are so many different type of t28 and t3 turbo so its not utter shit
and rs turbos dont come with t3 as std
27-05-2006, 11:29 PM
#32
Chasing Radders
Thread Starter
Originally Posted by Tim
max power at 4100 sounds as good as ya derv tiff or did i read it wrong? 
or did i read it wrong? I did think that when i first saw the spec and power output
Im sure Karlos will be able to make it a bit better than that
28-05-2006, 03:37 AM
#35
Audio specialist
Originally Posted by chip-3door
Tiff, try and find out who specced that turbo for the job its doing, if it was someone like Karl, then fantastic, cause its possible to make a great CVH with a T28 if you know what you are doing, if it was just picked at random off ebay, then steer clear.
28-05-2006, 03:52 AM
#36
Audio specialist
Originally Posted by TIFF
Originally Posted by Tim
max power at 4100 sounds as good as ya derv tiff or did i read it wrong?
or did i read it wrong? I did think that when i first saw the spec and power output
Im sure Karlos will be able to make it a bit better than that
my car was put back to how it was intended, only a tad better quailty build.
yes its as crap as a diesel, but fu*k sake, the bmw 330tdi has a massive torque figure does it not?
so are std cossies crap aswell? they arnt as good as a std bmw derv muncher power wise..?????????
