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T3 Turbo compressor rating on 617A
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Posted 4/21/2007 10:53 AM
id_gwagen

Date registered: Dec 1899
Location:
Vehicle(s):
T3 Turbo compressor rating on 617A

Folks,

My T3 intake compressor measured exactly 60mm (inner lip), what is the horsepower rating for this turbo? I've read many times that the std 617A has 45 compressor rating, is that the size of the compressor wheel or the intake?

Regards,




(comp.jpg)



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#70878
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Author
Posted 4/21/2007 7:04 PM
ForcedInduction
Regular




Date registered: Sep 2006
Location: Federal Heights, CO
Vehicle(s): 1980 240D 3.0VNT
Posts: 89
50
RE: T3 Turbo compressor rating on 617A

How did you measure the wheel and what math did you use?

 

The compressor wheel in that picture looks damaged. 

#70913 - in reply to #70878
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Posted 4/22/2007 1:20 AM
id_gwagen

Date registered: Dec 1899
Location:
Vehicle(s):
RE: T3 Turbo compressor rating on 617A

ForcedInduction - 4/21/2007 6:04 AM

How did you measure the wheel and what math did you use?

The compressor wheel in that picture looks damaged.



I used a vernier caliper (we call it sigmat down here), measured the outside diameter.

How could you tell the compressor wheel is damaged, it's way underexposed.
#70934 - in reply to #70913
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Posted 4/22/2007 1:28 AM
ForcedInduction
Regular




Date registered: Sep 2006
Location: Federal Heights, CO
Vehicle(s): 1980 240D 3.0VNT
Posts: 89
50
RE: T3 Turbo compressor rating on 617A

Trim = (minor diameter / major diameter) ^2 * 100 The housing needs to be removed to measure it.

 

The blades on the wheel are curved back, they should be straight. Can you take the housing off and post a picture?

#70935 - in reply to #70878
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Posted 4/22/2007 1:36 AM
id_gwagen

Date registered: Dec 1899
Location:
Vehicle(s):
RE: T3 Turbo compressor rating on 617A

Thanks for the formula, that would be useful later.

You probably saw my earlier postings on the wheel right? it's been fixed when the wheel was cleaned off. I'll take off the housing again to measure the wheel when I'm ready to install the IC later om.

#70936 - in reply to #70935
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Author
Posted 4/22/2007 2:36 AM
ForcedInduction
Regular




Date registered: Sep 2006
Location: Federal Heights, CO
Vehicle(s): 1980 240D 3.0VNT
Posts: 89
50
RE: T3 Turbo compressor rating on 617A

id_gwagen - 4/22/2007 11:36 PM You probably saw my earlier postings on the wheel right? it's been fixed when the wheel was cleaned off. I'll take off the housing again to measure the wheel when I'm ready to install the IC later om.

 

I must have missed that. I'll search back through the forum for it. 

#70940 - in reply to #70936
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