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92gmc
03-12-2004, 10:51
what is the difference between all the different pre-combustion chambers ?

GM lists several for the 6.2, for the 6.5 NA and 6.5 turbo.

thanks in advance
JohnC
03-12-2004, 11:18
Some are designed for power and others for fuel economy. Can't have both!
92gmc
03-12-2004, 11:31
fair enough, but other than knowing what engine they are out of, is there a reference to the codes on them ?

thanks
Kennedy
03-12-2004, 12:27
No reference that I am aware of, but the "T" cups may well be the best solution.

I put some bigger yet in my '96, but no telling what the real benefit was...
92gmc
03-13-2004, 08:23
Originally posted by JohnC:
Some are designed for power and others for fuel economy. Can't have both! so how would a PCC designed for power be different physically than a PCC designed for economy ?

thanks
grape
03-13-2004, 10:57
area of the opening is different
dieseldummy
03-13-2004, 11:39
Kennedy,
What are the "T" cups you talk about are they just the turbocharged cups? Where would a person find ones that are even bigger?
Justin
TurboDiverArt
03-16-2004, 06:37
Does anyone have a picture of what these are? Looked in the member section in the 6.2/6.5 head article but there were no pictures of this. Maybe a schematic drawing of a diesel head? I'm trying to imagine what a T-cup is for the combustion chamber. Not knowing much about diesels as never having torn one down, are these replaceable? I just sort of thought we had a hole in the head where the injector screwed in and a hole below the injector for the glow plug? Probably what GM thought too with the Olds gas conversion....

Art.