putting grommets in valve covers??

[rbbruno3]

I recently purchased new Mopar Performance black aluminum valve covers. How do you cut them to put in grommets for breather and pcv valve? Thanks for any help, Rick

 

[kocuda]

hole saw and a drill

 

[rbbruno3]

thanks for the reply, I'll give it a try

 

[rednesss]

They're already cast to break out the parts covering the holes. You can just hit em with a ball peen hammer and then clean up the edges with a file.

 

[pettybludart]

They're already cast to break out the parts covering the holes. You can just hit em with a ball peen hammer and then clean up the edges with a file.

Just knocked out mine on some M/T covers,used a socket with extension.Gave it a good tap and they popped out,pre-cut.

 

[rbbruno3]

That sounds good too, do you hit from the outside down or inside out? Thanks again for the help, Rick

 

[rednesss]

Ehhhh, it's been a couple of years since I did mine, but I think I whacked em from the outside, just get a good feel for where the center of the hole is and aim for that.

 

[daredevil]

If you lay them on their back on a flat table and use a punch from inside you run less risk of cracking them because the flange is supported.