Valve cover holes

[truckinman466]

I just bought a set of Mopar performance valve covers. I need to knock out a hole for the pcv valve and breather. Anyone know the best way to do it with out tearing them up?

[Rich G.]

I use a hole saw.

[Dakota]

  I'm going to need to do this in a little while too.

[Chryco Psycho]

you should be able to tap the plug outwith a hammer & clean up the edges

[Dakota]

you should be able to tap the plug outwith a hammer & clean up the edges

So there's a plug that can be knocked out in this location?   If so, I am very grateful to have seen this post. 

[Daveh]

I use a step bit I think they cut better and smoother.  Just my

[RUNCHARGER]

Yes, that knocks out.Then you file it smooth.

[Burdar]

Yes, they knock out.  You should be able to see on the back side that the perimeter of that flat area is much thinner then the rest of the cover.  I still found the procedure to be nerve wracking.  If you have some stepped drill bits in the size you need, I think I'd go that route.

[Claudia]

I agree with the above statements . . . yes, they are designed to "knock" out but it is extremely nerve racking to do so and the edges will still need to be filed (cleaned up).  IMO a stepper drill bit is the only way to go.  Clean and easy!