Name these turbos
#10
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ok pics and measurments. On the left is turbo 1 right is turbo 2.
I don't have a decent micrometer any more so all numbers are kinda guess work.
Turbo 1 seems to have an inducer of 42mm and exducer of 52mm
Turbo 2 seems to have an inducer of 42mm and exducer of 54mm
Two people have identified turbo 2 as a T25 from an SR20. That seems really close to a GT2554, only 1/2mm different on the exducer. Is that the main difference?
What would the measurments make the first one? Something around a 2252? The A/R does match, but the size is close.
Now the pics...
![Name: DSCN1902.jpg
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![Name: DSCN1900.jpg
Views: 65
Size: 79.7 KB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/188783d1501219585-name-these-turbos-dscn1900.jpg)
![Name: DSCN1904.jpg
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Size: 91.1 KB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/188784d1501219585-name-these-turbos-dscn1904.jpg)
![Name: DSCN1903.jpg
Views: 55
Size: 77.5 KB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/188785d1501219585-name-these-turbos-dscn1903.jpg)
edited for different pics
I don't have a decent micrometer any more so all numbers are kinda guess work.
Turbo 1 seems to have an inducer of 42mm and exducer of 52mm
Turbo 2 seems to have an inducer of 42mm and exducer of 54mm
Two people have identified turbo 2 as a T25 from an SR20. That seems really close to a GT2554, only 1/2mm different on the exducer. Is that the main difference?
What would the measurments make the first one? Something around a 2252? The A/R does match, but the size is close.
Now the pics...
![Name: DSCN1902.jpg
Views: 57
Size: 89.4 KB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/188782d1501219585-name-these-turbos-dscn1902.jpg)
![Name: DSCN1900.jpg
Views: 65
Size: 79.7 KB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/188783d1501219585-name-these-turbos-dscn1900.jpg)
![Name: DSCN1904.jpg
Views: 63
Size: 91.1 KB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/188784d1501219585-name-these-turbos-dscn1904.jpg)
![Name: DSCN1903.jpg
Views: 55
Size: 77.5 KB](https://www.miataturbo.net/attachments/diy-turbo-discussion-14/188785d1501219585-name-these-turbos-dscn1903.jpg)
edited for different pics
#11
Boost Czar
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Turbo 1 seems to have an inducer of 42mm and exducer of 52mm
Turbo 2 seems to have an inducer of 42mm and exducer of 54mm
Two people have identified turbo 2 as a T25 from an SR20. That seems really close to a GT2554, only 1/2mm different on the exducer. Is that the main difference?
Turbo 2 seems to have an inducer of 42mm and exducer of 54mm
Two people have identified turbo 2 as a T25 from an SR20. That seems really close to a GT2554, only 1/2mm different on the exducer. Is that the main difference?
Im going to guess they are both the same sized turbo. Not many 52mm wheels floating around, although the blades look different. 5 blades vs 6.
shame they are slightly different can then you could use the better housing on turbo 2.
the sr20 turbo is sized like a 2554. main difference is journal bearing vs ball bearing. it's a great little turbo to use for a ~220rwhp install.
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