Compressor housings ... T1 vs T2

[puppet]

All things being equal, inlet and outlet sizes, does one have an advantage over the other ... and why?

In comparing both side by side, the T2 is obviously larger but this size difference seems to be just in the radius that the compressed air flows. Does the tighter wind of the T1's housing hurt anything flow wise?

I ask because I have a early style MP+ turbo. Changing to the stock T2 housing will mean some machine work for the stock inlet. If it doesn't matter ... I'll go with the earlier style housing move on.

[DocFish]

Both T1 and T2 compressors should be the same, except for the inlet!
Garrett

[puppet]

OK ... I can take your response two ways.
Both the same meaning ... how they flow. (what I'm asking)
Both the same meaning scroll shape .... which is not right.

I know the inlets differ.

[moparzrule]

Housings are the same unless you happen to have a super 60 that you think is a T2. The T1 and T2 housings interchange, same size .42 A/R should be stamped somewhere on both.

[puppet]

I owe DocFish an apology ... the scrolls are the same. When I looked at them the other night it appeared to me like the T2 scroll had a larger radius. A closer look shows that the T2 housing just overhangs the scroll more ... the T1 housing edge stops at the scroll radius .... makes it look smaller.
I'll stick with the T1 since it's already the right inlet size.
Thanks fellas.

... note to self, start saving for eyeglasses.

[JDIZZ]

Quote:

Originally Posted by puppet All things being equal, inlet and outlet sizes, does one have an advantage over the other ... and why? In comparing both side by side, the T2 is obviously larger but this size difference seems to be just in the radius that the compressed air flows. Does the tighter wind of the T1's housing hurt anything flow wise? I ask because I have a early style MP+ turbo. Changing to the stock T2 housing will mean some machine work for the stock inlet. If it doesn't matter ... I'll go with the earlier style housing move on.

My MP plus turbo is not the same as a stock T2 Garett (blow through style intake). It has a 60 trim compressor on it (not a super 60). Although it looks like a stock t2 cover from the outside, it is bigger on the inside. So the stock T2 compressor cover will not fit over the 60 trim compressor wheel.
Is yours different? If it has a larger compressor wheel on it as mine does, the t2 compressor housing will not fit over it.
If it has a stock compressor wheel on it than you can use the early (draw through) or later (blow through) style (stock) compressor cover on it.
The overhang of the scroll and the radius you wrote about may be from the bigger 60 trim wheel.
Other than the inlet to the compressor, the stock Garett housings appear to be the same to me.


Joe Dzwil

[moparzrule]

A turbo plus unit would have the .63 turbine though.

[JDIZZ]

Quote:

Originally Posted by moparzrule A turbo plus unit would have the .63 turbine though.

Correct, stock turbine wheel and a .63 turbine housing.


Joe Dzwil

[puppet]

I was just asking about the scroll radius at first Joe. The inlet on the T1 MP+ that I have is bigger than stock.

I was debating on machining the stock T2 to fit over the wheel on the T1 MP+. Since the scrolls are the same as well as the outlets ... T1 vs. T2.. it's a waste of time and money, not to mention the tolerances a guy would need to hold. (the "modified by whoever" T1 housing already fits where it matters.)

I can use a modified inlet flange on the T1 MP+ comp housing, getting alittle sloppy here won't hurt anything, sticking the saved cash someplace else.

[JDIZZ]

Quote:

Originally Posted by puppet I was just asking about the scroll radius at first Joe. The inlet on the T1 MP+ that I have is bigger than stock. I was debating on machining the stock T2 to fit over the wheel on the T1 MP+. Since the scrolls are the same as well as the outlets ... T1 vs. T2.. it's a waste of time and money, not to mention the tolerances a guy would need to hold. (the "modified by whoever" T1 housing already fits where it matters.) I can use a modified inlet flange on the T1 MP+ comp housing, getting alittle sloppy here won't hurt anything, sticking the saved cash someplace else.

Ok, I think I understand what you are saying. I didn't want you to be misled so I tried to clarify the MP plus turbo for you.

Good luck,
Joe Dzwil

[puppet]

Thanks Joe.