fizbin84

Turbo 1 shows a compressor of .48 and impeller of .64. I can't find a match on Garrett's web site.

The second is compressor .80 and impeller .64. I think it is a 2554.. can you confirm?

Hot_Wheels

iTrader: (12)

whats the part number on the tag of the center section say?

fizbin84

no tag that I can see... would that make these knock offs?

Hot_Wheels

iTrader: (12)

no, #2 looks like a t28, has the nissan 3 bolt outlet with the larger inlet,

fizbin84

Morning bump for any more ideas...???!!!

Braineack

iTrader: (62)

Turbo 2 is a T25 from an SR20.

Turbo 1 has a bad compressor wheel.



your pictures suck.

fizbin84

Thanks! and I know

What would that typically cost to rebuild or replace?

Braineack

iTrader: (62)

are you going to be running one of these?

remove the compressor housings and measure the ind/exd. diameters

snap a shot compareing the turbine wheels.

fizbin84

Yea, I'll be running number two for now. I purchased the first blind and got robbed because it is useless without a new compressor. I purchased the second as a known good unit just to get the system running.

I'll take some pics this afternoon.

fizbin84

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...









edited for different pics

Braineack

iTrader: (62)

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.