Thick oil

[Hammerhead]

(08-31-2017 )PeteMelb Wrote:  Found it!

I upped the pressure on the coolant system to 20psi as you suggested Nilao and today we found it, it looks like the liner on number one piston is leaking, so an inframe rebuild is now being planned, its a pity as I removed a big end cap and main bearing cap and I was amazed, there's not one bit of copper showing on either bearing shell.(i was going to upload some pictures but not sure if thats allowed or do able).

Thanks to those who offered advice I'm off to watch Rawze's video's on how to rebuild an ISX.

Uploading and sharing pictures is encouraged around here.
We are all here to learn from and with each other, so let me say "Thanks for updating your discovery". Too many would have just found the issue, fixed it and moved on never letting the rest of us learn from the opportunity.

So let me repay it by letting you know some of the things learned around here...
First, raise the liners to 0.014" protrusion. This has been discovered to be the issue solving liner height.
Second, when you get to the head torque stage, add this to the procedure...after torquing to 300 ft/lbs, DO NOT immediately do the "plus 90*". Wait 24hrs, re torque to 300 ft/lbs, then do the "plus 90*", the gurus around here have learned the head gasket will crush/settle overnight enough to lose approx 90-100 degrees of rotation to achieve the 300 again!

Good luck.