Eaton Charger + AFM (DoD) removal issue

[2boosted]

Pl4boy!!!!!!!!! missed u !

He lives in DOHHHHH moments... believe me !

[farmtruc]

Ok, so to recap, we replaced all the lifters in a DoD engine, come to find out, truck has a slight miss on cylinders 1,4,6,7.
All other DoD delete past installs have always included an aftermarket no deactivated lobe cam.

After scratching our heads for a while, we decided to perform a compression test, even though we knew the engine hadn't seen over 3K rpms and hasn't been on the road yet (blow piston, broke ring, etc).

Results:
1,4,6,7 had 120psi
2,3,5,8 had 170psi

For those who don't know, the DoD cams have four different lobes.
The non deactivated lobes are different than the deactivated lobes.
The difference: when you install a standard lifter on a deactivated lobe, it will act as though it has another 40-50 degrees of duration.

I did know that the DoD cam was different, because we've ordered DoD aftermarket comp cams in the past, but it didn't occur to me that it would act differently.

Here's an example of a DoD cam we ordered not too long ago:

As you can see, for us performance guys, it's really not worth the extra gain.
But that doesn't mean we don't install them or there isn't a power increase.

The cam is a 210/218 .500/.500" 114LSA +4 advance
(but the DOD lobes are actually 212/220)

Use cam core 156-000-13

Use these lobe numbers:
13300R/13302R HR 114 +4 (for non-deac cylinders 2,3,5,8)
13310R/13312R HR 114 +4 (for deac cylinders 1,4,6,7)



lesson learned,