What engine lasts longer?

[Rawze]

(01-04-2019 )AHMLLC Wrote:  A well tuned and maintained 2010 Isx or a tuned 2007 Detroit 60 series? I love my cummins but for some odd reason our engine has a bad reputation.

Well maintained, de-mandated, well tuned ISX has a huge profit margin over the S60 over its lifetime.

Turn the ISX down to run and have same response and hp curve as an S60 and it will out-last it every time. Things like the dulled out low-end response an S60 has, lower HP curve, good HP and pulling only in the higher rpm ranges, etc. - Problem is no one wants their ISX to run like an S60.

I.E. it is not the engine design that make it last longer,... it is the dulled low-end response, etc. compared to the ISX. This is even evident in comparing ISX to ISX. Between the CM 870 and the CM871, identical engines but the 870 has a dulled low-end due to the air operated turbo. - On average, the 870 is known to last an avg of 200k miles longer before inframe than the 871 for that reason alone.