Waht to use to drill holes in hemi valve covers?

[nitro_force_fan]

Hey guys what size drill bit do you use for drilling holes in valve covers?Whats the best way to go about it? thanks..joe

[martinfan5]

Get your self a pinvise, this is the one I have

http://www.testors.c...e_with_5_Drills

I got mine at hobby lobby used a 40% off coupon and got it for $7

Edit- I missed read the opening post

Edited March 1, 2012 by martinfan5

[SuperStockAndy]

#77 bit is about right, but I'd go #78 and make it bigger if necessary.

Edited March 1, 2012 by SuperStockAndy

[nitro_force_fan]

Awsome...thanks guys!...joe

[Guest Johnny]

I always used a heated needle!

[FASTBACK340]

**TIP** Before you go after an item with the drill bit (especially a Hemi valve cover, where alignment is visible) I install a straight pin in either an x-acto handle or pin vise. Then I carefully find the exact spot I want the hole, and I gently push the point into the plastic. This leaves a center punched starter-hole for when you drill. If your aligned your drilled holes will line up neatly.

I use this method when ever I have to have a no-slip hole drilled.