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| Dodge Competition and Performance General Dodge Competition and Performance Discussion |
09-10-2016, 01:51 PM
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#1
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Name: 215cummins
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2010
Location: Bellville, Ohio
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Posts: 93
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Turbo numbers.
I feel like a total idiot to ask this.. But can some one please explain the three sets of number used when talking about turbos( 873/74/08-example). Thanks in advance..
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09-10-2016, 01:57 PM
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#2
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Name: chevota84
Title: Too Much Time
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Join Date: Jul 2009
Location: Prineville, OR
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66/71/13 = compressor inducer in mm/turbine exducer in mm/turbine housing volume in cubic centimeters. Sometimes the last number will be a/r ratio.
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99 Dodge 2500 with stuff
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09-10-2016, 03:48 PM
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#3
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Name: 215cummins
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2010
Location: Bellville, Ohio
Member`s Gallery
Posts: 93
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Quote:
Originally Posted by chevota84
66/71/13 = compressor inducer in mm/turbine exducer in mm/turbine housing volume in cubic centimeters. Sometimes the last number will be a/r ratio.
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Thank you! That really helps me out.
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09-10-2016, 11:57 PM
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#4
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Name: Tate
Title: What?
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Join Date: Nov 2007
Location: Airdrie, Alberta
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Posts: 3,419
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Quote:
Originally Posted by chevota84
66/71/13 = compressor inducer in mm/turbine exducer in mm/turbine housing volume in cubic centimeters. Sometimes the last number will be a/r ratio.
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It seems that turbine exducer numbers are used for small/medium frame turbos. When ever you talk about S400, you refer to the inducer size.
Housing size is in square centimetres, but a lot of them are applied to housings that are measure in A/R (area/radius) ratios. Look at Bord Warners site, the S-series turbos are listed by A/R's (as well as Garrett and most others), and K-series are in cm^2 (as are most Holsets). But people will call an S300 0.80A/R housing a 12/13/14 cm^2 housing as it was comparable to a 14 cm^2 housing on an HX35.
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09-11-2016, 12:08 AM
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#5
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Name: CorneliusRox
Title: Seasoned Rookie
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__________________
Corey - BSME '21 Tesla Model 3 Perf
'22 DMax AT4 2500
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09-11-2016, 02:07 AM
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#6
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Name: chevota84
Title: Too Much Time
Status: Not Here
Join Date: Jul 2009
Location: Prineville, OR
Member`s Gallery
Posts: 4,926
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Quote:
Originally Posted by Tate
It seems that turbine exducer numbers are used for small/medium frame turbos. When ever you talk about S400, you refer to the inducer size.
Housing size is in square centimetres, but a lot of them are applied to housings that are measure in A/R (area/radius) ratios. Look at Bord Warners site, the S-series turbos are listed by A/R's (as well as Garrett and most others), and K-series are in cm^2 (as are most Holsets). But people will call an S300 0.80A/R housing a 12/13/14 cm^2 housing as it was comparable to a 14 cm^2 housing on an HX35.
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Yeah, didn't think about s400's. Now that you bring it up, I wonder why that is?
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