Compression of Wendy

[McRat]

2006 LBZ stock internals, 70k miles: 440 PSI warm using Kent Moore LBZ/LMM tip and gauge. Only #7 was tested as a base value.

 

[whitetrash21]

Damn, pretty impressive considering all its done.

 

[McRat]

I put this up because nobody could give me a solid answer as to what an LBZ/LMM has as factory compression with the Kent Moore tool. I didn't think it was over 360 PSI, and I was wrong. In comparison, last compression sheet I have on Casper is 320 PSI, but the pistons are de-lipped.

 

[DIGGLER]

my 250k mile stock lbz hit over 400 on all but 2 cyls. most were 420ish.
thats with a harbor freight pos gauge, however.

 

[Sledhead]

My stock (on the shop floor cold) LB7 was mostly 450 - 460, don't remember the tester brand though.
http://duramaxdiesels.com/forum/album.php?albumid=274&pictureid=2212

 

[x MadMAX DIESEL]

my 250k mile stock lbz hit over 400 on all but 2 cyls. most were 420ish.
thats with a harbor freight pos gauge, however.

How did that work out for you?? Since the casting on the head doesn't allow you to install the adapter into the glow plug hole more than half a turn

 

[Chevy1925]

How did that work out for you?? Since the casting on the head doesn't allow you to install the adapter into the glow plug hole more than half a turn

in his thread he said he got 4-5 threads in.

 

[x MadMAX DIESEL]

I wish I could, I was afraid to try it with the little threads I could use.