ISX Cylinder liner sinking causing head gasket failure

I’ve got a 2005 ISX all apart at the moment.

The sleeves look really good with no pitting.



They have no shims.

Counter bores also look really good.

My boss ordered a PAI rebuild kit.

I see the new liners came with brass shims installed.

Picture here I’m doing measurements with both old no shim sleeve and new sleeve with brass shim.



Both came within .012” protrusion.

Told my boss that we should get the old sleeves re-honed and reinstall them

 

Pretty sure you should be measuring protrusion with the liner clamped? ESN?

If there’s no fretting and the block looks good what’s wrong with rebuilding with stock parts?

 

I did have them clamped, I posted the wrong picture.

I have two pictures, one with the bolts and the other without.

My boss thought the PAI kit would be a good upgrade kit from research that he’s been doing.

 

.012 is great. I have always had good luck with PAI kits. They come with everything you need.

 

Goodysnap: ESN

 

I shall talk to my boss about this tomorrow.

 

Interesting, I will start checking the brass shim out more closely. I know when I cut counter bores the first cut will always show a low edge on the exhaust side, sometimes it can be several passes before it trues up. Cat uses stainless shims that stand up well, wonder why Cummins didn't. Have a x15 that I just cut on Friday and they are the same as all the earlier isx design. same brass shim and brown/burnt fire ring head gasket at 8000 hrs. (engine was dusted is why it came apart) We to cut for max protrusion of .014"