t28 turbo question
Contributing Member
Joined: Feb 2002
Posts: 500
From: Long Island, NY
Both the T25 and T28 utilize the same flange, a T25 flange. So yes the T28 will bolt up to the SR20's stock manifold. Or any manifold with the T25 flange as well. The T28 is only slightly bigger then the T25, so its efficiency is a little better, meaning it can take about 2 more lbs. or so of boost. But by turbo sizing standards, it is still very small.
Registered User
Joined: Oct 2003
Posts: 176
My S13 red top SR20DET came w/ an S15 T28 dual ball bearing, " Got Lucky", so that proves 100% that YES you can swap out your tiny T25 for a T28, but I cant get more than 8psi, running out of fuel, so if you do it, get bigger injectors, at least 550cc, and a fuel controller, Apex-i S-AFC 1 or 2!
You can pick them up USED for around $500, and NEW like $800+
http://www.phase2motortrend.com
I like the HKS Ex. manifold, pricey but clean!
And another thing, I have seen guys run 22psi( race gas), and 18psi ALL DAY on pump gas, w/ proper fuel system, and tuning!
It seems to be the best bang for your buck red top SR20 upgrade!
But in order to have fuin, you gotta have the fuel!
Rumor has it, you will have a 12sec dailydriven 240sx, w/ this turbo, and hardly any lag at all, so you can drift/street race..
my best time is an embarrasment
14.3 @ 97mph, here at 4800ft elevation, 8psi, street tires, NO LSD, 2.3 60ft, so mayeb some drag radials,or slicks, and a LSD, 13's, then some fuel upgrades, and run 22psi, w/race gas, and high 12,low 13? mayeb better, get a 1.6 60ft!
You can pick them up USED for around $500, and NEW like $800+
http://www.phase2motortrend.com
I like the HKS Ex. manifold, pricey but clean!
And another thing, I have seen guys run 22psi( race gas), and 18psi ALL DAY on pump gas, w/ proper fuel system, and tuning!
It seems to be the best bang for your buck red top SR20 upgrade!
But in order to have fuin, you gotta have the fuel!
Rumor has it, you will have a 12sec dailydriven 240sx, w/ this turbo, and hardly any lag at all, so you can drift/street race..
my best time is an embarrasment
14.3 @ 97mph, here at 4800ft elevation, 8psi, street tires, NO LSD, 2.3 60ft, so mayeb some drag radials,or slicks, and a LSD, 13's, then some fuel upgrades, and run 22psi, w/race gas, and high 12,low 13? mayeb better, get a 1.6 60ft!
Contributing Member
Joined: Feb 2002
Posts: 500
From: Long Island, NY
Originally posted by Sil80guy
My S13 red top SR20DET came w/ an S15 T28 dual ball bearing, " Got Lucky", so that proves 100% that YES you can swap out your tiny T25 for a T28, but I cant get more than 8psi, running out of fuel, so if you do it, get bigger injectors, at least 550cc, and a fuel controller, Apex-i S-AFC 1 or 2!
You can pick them up USED for around $500, and NEW like $800+
My S13 red top SR20DET came w/ an S15 T28 dual ball bearing, " Got Lucky", so that proves 100% that YES you can swap out your tiny T25 for a T28, but I cant get more than 8psi, running out of fuel, so if you do it, get bigger injectors, at least 550cc, and a fuel controller, Apex-i S-AFC 1 or 2!
You can pick them up USED for around $500, and NEW like $800+
1)you don't need larger injectors
2)you wont need an AFC or fuel controller
Just get a boost gauge to monitor how much boost your putting out and make sure you don't over do it.
Registered User
Joined: Aug 2003
Posts: 156
From: mesa, AZ
Originally posted by Sil80guy
My S13 red top SR20DET came w/ an S15 T28 dual ball bearing, " Got Lucky", so that proves 100% that YES you can swap out your tiny T25 for a T28, but I cant get more than 8psi, running out of fuel, so if you do it, get bigger injectors, at least 550cc, and a fuel controller, Apex-i S-AFC 1 or 2!
You can pick them up USED for around $500, and NEW like $800+
My S13 red top SR20DET came w/ an S15 T28 dual ball bearing, " Got Lucky", so that proves 100% that YES you can swap out your tiny T25 for a T28, but I cant get more than 8psi, running out of fuel, so if you do it, get bigger injectors, at least 550cc, and a fuel controller, Apex-i S-AFC 1 or 2!
You can pick them up USED for around $500, and NEW like $800+
Last edited by ridesnowx4; Jan 5, 2004 at 02:32 PM.
Registered User
Joined: Oct 2003
Posts: 176
[QUOTE]Originally posted by ridesnowx4
[B]
Uh NO, an s15 T28 turbo = $500 USED, I can get an s-afc2 for $250!
[B]
Originally posted by Sil80guy
My S13 red top SR20DET came w/ an S15 T28 dual ball bearing, " Got Lucky", so that proves 100% that YES you can swap out your tiny T25 for a T28, but I cant get more than 8psi, running out of fuel, so if you do it, get bigger injectors, at least 550cc, and a fuel controller, Apex-i S-AFC 1 or 2!
You can pick them up USED for around $500, and NEW like $800+
Wait up.... are you talking about the S-AFC 1 and 2 for 500 bucks used.... i got my S-AFC2 for $289.
My S13 red top SR20DET came w/ an S15 T28 dual ball bearing, " Got Lucky", so that proves 100% that YES you can swap out your tiny T25 for a T28, but I cant get more than 8psi, running out of fuel, so if you do it, get bigger injectors, at least 550cc, and a fuel controller, Apex-i S-AFC 1 or 2!
You can pick them up USED for around $500, and NEW like $800+
Wait up.... are you talking about the S-AFC 1 and 2 for 500 bucks used.... i got my S-AFC2 for $289.
Uh NO, an s15 T28 turbo = $500 USED, I can get an s-afc2 for $250!
Thread Starter
Registered User
Joined: Dec 2003
Posts: 42
From: tyler tx
ok thanks for the help everybody. i am ordering the red top in about a month , i already have an issani fmic , and an hks super bov, i just want to make sure i am in the 13's before i drop my motor in. it will save me alot of time and money in the long run. my friend has a gsr motor in a honda hatch and he is runnin 14.1 and he thinks he is a bad ***.
Registered User
Joined: Oct 2003
Posts: 176
Originally posted by Silviaspeed
How do you run out of fuel at only 8psi.? Did you replace your fuel pump with a Waldbro or equivalent? I can tell you right now that with a simple boost controller and the 255lph fuel pump I run at 14 lbs. all day long without a problem. I'm doing it right now. Thats with an S14 SR20, T28 turbo. I could run upwards of 18lbs. on occasion with a FMIC, and still be fine. So:
1)you don't need larger injectors
2)you wont need an AFC or fuel controller
Just get a boost gauge to monitor how much boost your putting out and make sure you don't over do it.
How do you run out of fuel at only 8psi.? Did you replace your fuel pump with a Waldbro or equivalent? I can tell you right now that with a simple boost controller and the 255lph fuel pump I run at 14 lbs. all day long without a problem. I'm doing it right now. Thats with an S14 SR20, T28 turbo. I could run upwards of 18lbs. on occasion with a FMIC, and still be fine. So:
1)you don't need larger injectors
2)you wont need an AFC or fuel controller
Just get a boost gauge to monitor how much boost your putting out and make sure you don't over do it.
Walbro pump are junk, IMO! I have a Tomei fuel pump, had too many problems w/ Walbros in other cars, so you get what you pay for...
i dunno ?WHY? I get fuel cut when I run over 8psi, but I just do...
it doesnt matter anyway, I am getting an RB swap!
Registered User
Joined: Oct 2003
Posts: 176
Originally posted by cutter
ok thanks for the help everybody. i am ordering the red top in about a month , i already have an issani fmic , and an hks super bov, i just want to make sure i am in the 13's before i drop my motor in. it will save me alot of time and money in the long run. my friend has a gsr motor in a honda hatch and he is runnin 14.1 and he thinks he is a bad ***.
ok thanks for the help everybody. i am ordering the red top in about a month , i already have an issani fmic , and an hks super bov, i just want to make sure i am in the 13's before i drop my motor in. it will save me alot of time and money in the long run. my friend has a gsr motor in a honda hatch and he is runnin 14.1 and he thinks he is a bad ***.