Nissan T28 turbo housing markings

bruce · Postby **bruce** » Fri Jul 14, 2017 5:13 pm

Howdy,
I've searched the interwebs and all I find is conflicting information and a lot of arguing between Nissan fanboys.
Currently have an SR20DET with a T28. Markings on housing read;
Garrett, AR60, M24, 1.1
Looking at a replacement turbo with the same markings but end in a 1.2
Both are supposed to be S14 turbos. Latter described as a S14/s15.
Can't look at the serial numbers for a definitive answer.
What is the difference?
Is it a direct bolt on changeover for my current setup?
Thanks
Bruce

smy0003 · Postby **smy0003** » Fri Jul 14, 2017 7:02 pm

I think I remember seeing a t25 wastegate (the smaller one) on your car?
The T28 from the sylvias are actually a 2560 turbo, so actually not a T28 at all. The 'T25' is a 2554 turbo. Very confusing.

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bruce · Postby **bruce** » Fri Jul 14, 2017 7:49 pm

Hmmm. The mystery deepens.

Postby **beavis** » Fri Jul 14, 2017 10:05 pm

As far as I was aware they were pretty much all the same although JDM Silvias got a ball bearing turbo?
I asked my best source of silvia knowledge, his only suggestion was maybe one is journal bearing versus ball bearing?

smy0003 · Postby **smy0003** » Fri Jul 14, 2017 10:40 pm

S13 engines definitely came with the smaller turbo (2554, smaller wastegate actuator). S14/S15 came with the 2560 which is identified by the larger wastegate actuator.

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