On the new dt body style ram, 19+ they added tie bars for the manifold bolts, now the manifolds are all cracking. I've replaced a ton of them, both sides
What he said!
If you’ve ever had the manifold off of a Nissan V8 it’s very similar to a Hemi head. Difference being they used a larger fastener in the head. Those manifolds have been cracking for years…..and the cat is integral to it $$$.
as WV said, now the Hemi manifolds are cracking. Easier than extracting broken bolts.
I’ve actually used a step drill bit and widen the end holes on the manifold side hoping that maybe it’ll prevent “shear” and perhaps the bolt will have room to bend some. I’ve also been putting a bead of copper RTV on both sides of the gasket on those end ports. I’ve seen where bolts can be broken, but no leak using that method.
