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Look inside the 25+ redesign engine/block/head
- Thread starter Brutal_HO
- Start date
CdnHO
Well-Known Member
They put the extra bearings into the cam bore for a reason. Hopefully to prevent the lifter failures. Interesting video.
MacksRam
Active Member
Overall, I feel Dave had more positive comments than negative comments as it relates to the new 2025 Cummins engine.
People have been saying the head/valves/rocker arms/lifters, etc on the 2025 are the SAME as the 2019-2024 models--Dave proved there are differences--prayerfully these differences are going to result in a more solid platform (especially when Ram gets the "electrical" issues resolved).
The video kept "buffering" for me, so it was difficult to watch.
I've not really seen anyone saying the 25+ engine redesign has the same heads, etc. that were used on the 19-24 CGI. Must just be Bookface fools.
Early on before release, there were many that saw the leaked photos, several of which myself and a few others had early access to, claiming the head was aluminum. That was a big LOL. The valve cover riser is aluminum.
The hydraulic lifters remain, and use the same part number. That doesn't mean they are identical to earlier lifters, there are different suppliers. In the engine he tore down, I saw that they did not have any oil control(?) grooves cut in them.
I think there's merit to the theory proffered by many including Dave that the CGI block has too much flex and the lifters are "fretting" due to this.