MBN Turbo

If housings are fine , nothing wrong with just a cartridge.

 

I do a lot of cartridge only. If your fins are pitted from dirt then I would say you have a leak on the inlet side. Usually a bad filter will plug up and starve it for air if it needs replaced. I would check all my tubes and seal on back of filter even if replacing it. If you don't find where it's sucking dirt your gonna overhaul it sooner than you want

 

I would examine the exhaust housing closely, the turbine housing and exhaust manifold are known to crack or even erode away.

 

+1 ; Found the turbo divider plate cracked on my MBN, Cat wouldn't accept it as a core, wanted almost $3500 for turbo & core (this was about 5 years ago); $2200 walked out of parts house with brand new Borg Warner. Traded that truck 400k mi later, turbo was working great at that time.

 

Toss that $4500 cat turbo on the junk pile and put on a Borg Warner S410G-175963 for $1786 (that's what I paid anyway back in Jan.)

 

I would hold off on a Turbo replacement; Pitted fins aside, i would be more concerned about leaking oil from seals: After checking the air inlet tube for leaks beginning at the air filters housing, chkg all clamps for tightness. Change your air & oil filters regularly. Just put the turbo on a watch list...it may still have several years of life. If, u replace ur filters.

 

To change to a standard replacement turbo on a mbn the ecm needs to be flashed to disable the ecm controlled wastegate, a BW 177148 would be more ideal, the 175963 has an exhaust housing that is too big to work on the 14.6L engine and would need to be swapped with a smaller one to work properly.