ISX 871 525hp No throttle response

[Rawze]

(03-11-2017 )Biglentil Wrote:  Just an update on my progress. I have an Inline 5 kit on order should be here in 3-4 days hopefully. In meantime im on mission yank the leaky water cooler and build a cross over water tube to replace it. Im quite good with copper having built many a liquor still. (look up bokabob if interested). Can also tig weld copper or stainless decently. Maybe stainless is the way to go. Will also get the new sensors. Pull my dash so i can trace where my OAT sensor goes and replace if necessary. Like Rawes says if its even there.

Flow through the egr cooler device on a CM871 is the equivalent of a 3/4" pipe. Keep that in mind when designing something. You also don't want it to be too straight. It needs to have a slight "U" shape bend in it for heat expansion.

Funny thing is that cummins actually makes factory egr cooler bypass piping for the other model engines that use the same block as the CM871. I have seen them but I don't know the part number at all.