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Old 07-30-2011, 01:44 PM   #122
Vlad
Scooby Guru
 
Member#: 46135
Join Date: Oct 2003
Chapter/Region: Tri-State
Location: NY
Vehicle:
19 GLA45 AMG
C63 AMG

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I'm an engineer too. I have some experience with manufacturing optimization and thought about some form of sorting the injectors too.

My thoughts were in the direction that Denso would charge Subaru less for a supply of injectors with a wider tolerance of flow.
Subaru then picks up the injectors, sorts them and matches them using the compenrations at the factory.

This would seem like extra work and since every extra minute on the assembly line can be expensive, at first thought this is not possible.
However, the engine has to go on the test rig as part of the assembly and spends sufficient time there for a quick fueling adjustment.

But here are several problems with the binning thoughts:

Binned/sorted injectors need to be properly coded by Subaru, by their own flow class attributed by Subaru.
Otherwise, injector replacement by an un-trained person will cause disaster.

I have the Subaru Fast2 parts data disc, for USDM, EUDM/AUS and JDM and I can tell you all injectors have 3 part numbers corresponding to:
pinks
light blues
dark blues.

In addition, there are the sidefeeds.

The Spec C went to dark blues with the beginning of version 10.

Injectors of the same engine have all the same part numbers.
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