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Discussion Starter · #1 ·
I'm getting .184 to .193 on the original 9mm 2468 injectors with the old copper sealing ring in the new head. This is a CPL 858. The shop manual doesn't list the spec for the 3.9 engines, only for the 4.5 rear gear train engines so I'm assuming not that critical? Do you guys pay any attention to this? I'll install new sealing washers. Any benefit to trying to even out the protrusion between cylinders by lapping the sealing washers?
 

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Discussion Starter · #2 ·
I am assuming from the lack of responses that it is not critical. :confused:
 

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I have never heard of this being a problem. Everything should already be machined within its specified tolerance. Just install the new seals and go with it.
 

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Discussion Starter · #4 ·
Thanks Bob, that is what I am going to do. The manual makes somewhat of a big deal out of this for the 4.5 RGT with the four valve head but doesn't really address it for the 3.9.
 
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