t28 turbo

[89S13 Drifter]

I was wondering if any of the sr20det's came with a t28, and if so was it normal, ceramic or ball bearing, or both? I thought I saw on a site once that the s15 had a ball bearing t28 but I lost the page, so I figured I would check with you guys.

[NeedCAforS13]

s15 sr uses a ball-bering t-28...don't know if its ceramic or not...

Sean

[drumma022]

from what i remember, the s15 has a ceramic EX wheel, and is ball bearing. I remember paul raving about his incolnel wheel. I also know that the s14 SRs came with the t28 as well. Check out various sites out there. I am sure that you can find good specs about the s14 turbos.

[Touring240]

the t28 came on both s14, and s15it is ball bearing.

its an affordable upgrade over the t25. many people say its not worth the effort though as only small gains will be made.

heavythrottle.com says that the t28 is only good to about 260whp. not sure if thats true though

[89S13 Drifter]

The reason I ask, is I am thinking of useing a t28 ball bearing on my 300zx, and then give my ka24e the t25 I have. The reason I am thinking t28 is because the t25 is impressinve for a small turbo so I figured a ball bearing t28 would be even more so. And as it isn't gonna be a pure drag car I don't feel like putting up with the lag of a t4 or big t3/to4e. Are their any good hybrid combinations for the t28? My gool is 400hp in the long run, maybe 500 if possible. And I don't want nos or lots of lag.

[Nathan]

GT2540...dual ball bearing and should support enough power for you but still spool well I'll tell you how it works on a CA18DET pretty soon!

[I H8 UR DSM]

The reason I ask, is I am thinking of useing a t28 ball bearing on my 300zx, and then give my ka24e the t25 I have. The reason I am thinking t28 is because the t25 is impressinve for a small turbo so I figured a ball bearing t28 would be even more so. And as it isn't gonna be a pure drag car I don't feel like putting up with the lag of a t4 or big t3/to4e. Are their any good hybrid combinations for the t28? My gool is 400hp in the long run, maybe 500 if possible. And I don't want nos or lots of lag.

The T25 is too small of a turbo for the ka(in any way shape or form to make it even worthwhile).....

The T28 is too small for the 300z.....

The t25 isnt impressive at all....

The t28 isnt going to get you anywhere neer 400hp, put it on your 300z, and most likely your going to loose hp...

on either car your not getting 400hp out of the t28, i think whole idea is wak, and needs rethinking personally...

also since when did Z31's come w/ t25's ??

[89S13 Drifter]

300zx's came with a t25 starting in 88. And Nathan, does gt2540 stand for gerret t25/t04 hybrid? Just asking as I have never heard to much about them.

[I H8 UR DSM]

SIGH....

You have a 300zx? Who told you or where did you get that info that it had a T25?

The twin turbo z's had 2 t25's...still they are not the same t25 found in the SR20det...but the Z31, pre 90 300z's had T3's..not t25's...

[89S13 Drifter]

SIGH....

You have a 300zx? Who told you or where did you get that info that it had a T25?

The twin turbo z's had 2 t25's...still they are not the same t25 found in the SR20det...but the Z31, pre 90 300z's had T3's..not t25's...

Sorry to tell you, but in 88 the car got a t25. They changed the engine around a little bit that year. higher compression and a t25 yeilded a little more horsepower than the old t3 z cars. The insides were changed a bit to, that is why you can use 2nd gen 300zx rods and pistons in a 88-89 300zx no problem. If you don't believe me, check out z31.com, its all there.

[I H8 UR DSM]

so up to 87 had a t3, and 88 and 89 had t25's? Then z32's have t22h's or something weird like that? Im not the 300z guy, i was under the impression, as was everyone else i asked that all z31's had the t3's.

[89S13 Drifter]

well it is very commen for people to put a t3 on the 88-89. See I liked the t25 cause on my friends stock z, he gets 10psi at 2500 and 225lbs of torque. Feels real good, not exactly the fastest car in the world, but when you live in PA with winding roands and probably the most pot wholes on the road, you don't realy ever get a chance to be up past 125mph for any extened amount of time.

[BuudWeizErr]

My buddy has a JDM VG30DETT sitting in his garage. It comes with 2 T28's. We were considering swapping one of his turbos onto my SR when we had it on the engine stand. The problem is that the compressor and exhaust housing is much smaller on that turbo, even though the compressor wheel is probably a bit bigger.

My conclusion:The VG30 T28 housing is smaller because the turbo was only meant to feed 3 cylinders as opposed to the 4 cylinder SR.

[Nathan]

I was talking about the HKS GT2540...but dont pay retail on it, it's outrageous...its a dual ball bearing turbo, and yeah it's a t25/t4 hybrid...some people have talked about the compressor and turbine not matching up well but I think it should be fine, I'm expecting boost to come on full around 4000-4500rpms.

[Onizuka]

S14 t28 is journal bearing (260-280 max hp)s15 t28 is ball bearing (290-310 max hp)

those are just hp claims i have heard both on this board and in magazines

[eliterit]

My buddy has a JDM VG30DETT sitting in his garage. It comes with 2 T28's. We were considering swapping one of his turbos onto my SR when we had it on the engine stand. The problem is that the compressor and exhaust housing is much smaller on that turbo, even though the compressor wheel is probably a bit bigger.

My conclusion:The VG30 T28 housing is smaller because the turbo was only meant to feed 3 cylinders as opposed to the 4 cylinder SR.

a friend of mine has 2 turbos from a z32 usdm motor.

have you ever heard of anyone putting the z32 turbo on an sr manifold? i just want to know incase i get a bad turbo with my motorset.

thanks