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south texas | Ive done this several times. Im not asking for me or about the injectors. Was asking why cummins literature says different valve lash settings for my engine than the tag without explanation. The change from ibc (6inlb) to obc (125 inlb) was explained in the literature provided to me with my last set of injectors. The obc method takes into account wear on the cam, followers ect, the ibc method doesn't have enough pressure to do that.
in 2014 i was having issues figuring out what my engine and methods should be, i ran the obc and ibc methods on the engine for my own knowledge, both came out almost exactly the same. Link to thread about it
https://talk.newagtalk.com/forums/thread-view.asp?tid=442230&posts=2...
this was before i received the literature about the obc method being preferred to take slack out of the valve train. Both methods were published by cummins, now with the change to the n14 mechanical book, the ibc method is not published anymore.
Edited by coastalBend 6/23/2018 08:15
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8970 855 cummins overhead set
