grounding to the frame need help

[jpsaudio 10+ year member]

ok im working on a 1970 chevy impala and i got my whole cut to run my ground to the frame but drilling this whole is a B***h. i have one of those step drill bits and a black n decker 18v drill and im not making that much progress. is there any other or better tool i need, or tricks of the trade that yall can help me with, any will help thanx

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[sacsking916 5,000+ posts]

Why not just ground to the battery?

 

[jpsaudio 10+ year member]

not enough 0awg wire to run a secondary from the neg on the battery. the kit only came with about 4ft but i have some extra at the house but not long enough

 

[mlstrass 5,000+ posts]

Step bit ***** for drilling anything but sheet metal. Frame is much thicker, so get some real drill bits. Start with 1/8", then go up to 1/4" or whatever size bolt you plan to use.

 

[audiobaun 5,000+ posts]

cutting torche..takes like 5min...some high schools have a shop class set up,they can either drill for you,or torche it...for free..hassle free on your end

 

[jpsaudio 10+ year member]

i dont mind working just want to make my job a lil bit easier..might go witht he drill bits

 

[TaylorFade 10+ year member]

Man, I sure have something for you. I can't let the cat out of th bag just yet though. I know that doesn't help you much at the moment. Lol.

If you don't get it figured out in the next day or two, shoot me a PM.

 

[Ignatowski 5,000+ posts]

i question your ability's .........

A unibit a real one not some cheap harbor frienght bit will go through a frame like butter once you drill a pilot hole however usually

I can find a pre existent hole to use with a 3/8" bolt somewhere on the frame

open your eyes a little ,old chevys have lots of holes

 

[maylar 10+ year member]

I use titanium or nitride coated high speed drill bits. Anything else seems to dull in no time.

BTW the frame is actually a lousy ground... there's no direct connection from the frame to the battery. You'll have to make that connection yourself. Motor mounts are rubber.