Im running into an issue putting my engine back together after a rebuild. I have the aluminum valve covers from CZP and the kinetix velocity intake manifold.
when taking everything apart I found the plastic PCV nipple on the right side valve cover that connects the hose to the left valve cover was broken. no big deal. its plastic after all. thought it got broken handling it.
fast forward to now going back together I replaced it with upgraded aluminum fittings also from CZP. the intake manifold chamber hits on that right side fitting before it can seal to the lower runners. like it needs a good 5mm of spacer put in.
my issue is I cant find an orientation to make it work, thinking I could swap fittings around or clock them. compared to the factory fittings they appear to stick out of the valve cover the same amount and orientation.
if anybody can suggest a solution or point me in the direction of a spacer that might exist out there somewhere that ive been unable to find.
also if you do have a kinetix velocity manifold, here is a reminder to double check the fit between the RH valve cover cross over fitting to make sure it is not busted open.

 

Aftermarket part mixing is a nasty game, I have the Velocity with OEM covers (honestly the ones to use) and I have no fitment issues.

 

Aren't there different revisions/versions of the velocity manifold? That could also play a part. Most of the aftermarket aluminum valve covers are a near perfect match in terms of outer dimensions and geometry to the OEM plastic units, so I don't think it's the valve covers causing the problem, but without looking at the two side by side or measuring up the PCV pipe fitting to compare, it's going to be hard to tell.

A potential solution is to 3D print a new pipe fitting with a different angle or length that clears the manifold. You could either use a plastic 3D printed unit or take the finished cad files once you verify fitment, and have a metal version machined or printed (laser sintering). There are online services that offer DMLS (metal 3d printing) for prototyping and/or small custom batch parts with a simple upload of the 3d print files. This does require some effort to replicate the part in a cad program. You don't have to buy a printer yourself, but if you have a friend with one, you could partner with them to start the process.

Good Luck!
-Icer

 

I ended up using the spare plastic 45 degree fitting from the left side cover that was left unbroken. I had to drill out the screw holes so I could clock it down slightly. it still touches the manifold chamber but at least it doesnt bend and break when tightening it down.
may decide to fab a space for the lower plenum and the manifold at some point if I run into problems down the road.