what size bit for 4guage wire?

[R0ID_RAGE 10+ year member]

drilling the hole in my clutch plate(since dont have one) but ran into a problem...the biggest drill bit i have is 1/4!

what size bit should i be using(obviously one that makes a hole big enough for my 4 guage wire, but do they make them that big for a normal drill?)

**** i keep running into more and more questions and problems--but i am **** determined to do this myself and succeed!

i spent all day trying to find where the clutch plate on the exterior of the firewall, finally found it, then couldn't find a drill bit big enough for my wire--SHJT

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[Worlddre 5,000+ posts]

unibit

 

[goodstuff 10+ year member]

a standard size bit should work fine...do you have the terminals on the end already or something? Can't imagine having a set of drill bits that wouldn't at least have a bit sized to make about a 4 gauge hole.

 

[tigerf117 10+ year member]

http://ec2.images-amazon.com/images/P/B00004SZ5I.01._AA280_SCLZZZZZZZ_.jpg

Those are usually for wood, however I use those to drill through firewalls n such.

They will dull pretty quick (not made for metal), but if you take your time drilling it should be fine. Im sure they make some for metal, but I have them lying around. Not sure what size it is for 4gauge tho. Hope that helps

 

[R0ID_RAGE 10+ year member]

what the hell is a unibit?

i have bigger bits, but they dont fit in my drill--they are made for some other drill that i can't take inside my car...

i was thinking about those, it will go through metal?? http://ec2.images-amazon.com/images/...CLZZZZZZZ_.jpg

 

[R0ID_RAGE 10+ year member]

unibit

JESUS--$80 for a drill bit

 

[goodstuff 10+ year member]

Go to walmart and buy a set that fits your drill...you will need it anyways eventually for something else.

 

[fwb_1234 10+ year member]

not 80. got to lowes. i just saw them. those are designed to cut through thin metal, like conduits and stuff.

other wise, go to the hardware store with a bit of your 4ga in your hand and compare it to the drill bits. shouldn't be more than a couple of bucks for a bit.

What kind of drill do you have that won't fit certain bits?

 

[R0ID_RAGE 10+ year member]

alright...i'll have a unibit tomorrow, free, now HOW big should the hole be(can i make it 1/2 inch for 1 wire, or should i try and make it as tight as possible to the wire?), and where do you find grommets??? i've looked in home depot, autozone, murray's, ACO, and lowe's...all i've come up with is 3/4 inches

how thick is the firewall anyway?

 

[funkyab 10+ year member]

since you are working hard to do your install yourself for the first time,, and have so many questions... you should keep it in one thread.. Those of us following your install will most likely be able to answer any question you have. And in one thread,, you will get all your answers in one place.

grommets.....

http://www.knukonceptz.com/productDetail.cfm?prodID=SB4

even better for your firewall

http://www.partsexpress.com/pe/showdetl.cfm?&Partnumber=263-636

strange you cant find something at an auto parts store

 

[R0ID_RAGE 10+ year member]

yeah...didnt know i was going to have so many ??? though...

thanks for the help!

 

[THUNDERBIRD 10+ year member]

i have found the plastic thread in grommets at an electrical supply house they use them for electrical boxes. hell lowes has to carry them in electrical.