Ported a little too much?

[Azrael]

I'll let the pics explain.

Happened on 4 of the 6 bolt holes. Do I have options or is it done for?

[SappySE107]

Not necessarily from porting. The uppers are easy to crack if you don't slowly tighten as you go around. Ported are just easier to crack cause that area is thinner.

JB weld or another epoxy is about it as far as saving it goes. Welding will be a PITA and take more work.

[Azrael]

Ok so torquing each bolt straight to 18 lbs-ft was my bad. I can see light through the crack I posted so I'm not sure I can trust it even with jb weld. I'll go to a wrecker tomorrow and pick up another manifold just in-case.

[robertisaar]

ouch.... those looked like nice, clean ports too...

[Azrael]

Dropped $80 on a new intake. 2 of the bolts cracked at 12 lbs-ft. I was tighening each a lb-ft at a time. I think my torque wrench might have been dropped and needs recalibrating. That might explain why my compression numbers are all over the place. Some of the rockers might have been overtightened too.

[SappySE107]

are you sure the lower isn't warped on top or gasket material is left behind? It doesn't take hardly any torque to seal the manifolds together.

[Azrael]

Lower was arrow straight across all the ports my straightedge could reach. The gaskets I was using was crushed under all the bolt holes so I'm leaning towards an overtightening toque wrench.

[Azrael]

Found the culprit and it's so stupid. It was the wiring harnes getting pinched between the plenum and the fuel-rail mounting bracket. Shoved it to the side where the bracket recesses a little and everything's good. Expensive lesson learned.