Re-build fried engine?

[Nostalgic]

(11-20-2021 )Rawze Wrote:  Here is what quickserv currently shows ...

CPL2732: (mid-tier CM871 engine)...
head: PP10238-04 (4962732 head, 4101454 exhaust valves)
valve cam: 4059331
injector cam: 3684306
injectors: 4954434
turbo: 3767615
pistons: 3684472
crank: 4925761
=========
CPL2919: ...
head: PP10238-04 (4962732 head, 4101454 exhaust valves)
valve cam: 4059331
injector cam: 4101432
injectors: 4088665
turbo: 4048098
pistons: 4923743
crank: 4925761
=========
CPL8081: (ISX- high performance 800Hp industrial/non-emissions engine) ...
head: PP8081-09 (4962732 head, 4101454 exhaust valves)
valve cam: 4059331
injector cam: 3100363
injectors: 4062569
turbo: 4025027 non-VGT HX-60 :or: a 4048098-VGT option
pistons: 4298992 (kit 4352288)
crank: 4925761

Here is also an overhaul kit cross-reference.
https://quickserve.cummins.com/service/e...ss_ref.pdf

NOTE: Not installing the exact kit for your engine CPL and ser# voids all warranties. it also makes for the need of custom programming to correct for any hardware changes so that the engine will run 100% efficiently.

I was going to ask if you had any idea or if Yiyito would know what difference there is between the 4048098 and my 5457297 - if it's wheel size, comp outlet horn, or a different housing entirely? Odd that none of the superseded numbers for mine go back to a 3767615, but different truck and ESN would make sense to have a different turbo. I have a feeling I that mine wouldn't make enough airflow at big HP since right now >1800 RPM, my boost drops down to about 30 lbs with a 53 or 54 closing, and EGT's will start to rise if I stay in it long enough. Not sure where the closing rate/efficiency/ratio ideal line is, but wouldn't think going more closed would really help without just making higher exhaust pressures and cylinder heat - but then again, maybe my injectors are not able to push the fuel out fast enough? All of this is kind of silly, since every time you look at one of my files you mention that I don't run it hard, and the hot/rust line on my turbo is pretty much non-existent.

Also, might add that the oil cooler is different as well. 2919 is aluminum, vs 2732 Stainless.