disk swap bracket question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

paulbrgr9999 · 10-17-2014, 12:16 PM

How did you guys drill this hole in the firewall? (See pic.) Look closely and you can see the pencil mark I made where the hole needs to be. Sorry the pic is sideways.

I cant get a drill in that tight spot to drill a straight hole for the bolt that needs to come through and secure the bracket from the booster.

And drilling from the other side inside the cab makes me concerned that the hole will not be exactly in the right place.

thanks

no1udknow · 10-17-2014, 12:25 PM

I can't see the pencil mark, but what booster are you using? maybe try using a air ratchet with a self tapping screw to make a pilot hole then go inside and drill outward. Or use a center punch, and then go inside and look for the dimple, punch it back the other way, and drill it.

paulbrgr9999 · 10-17-2014, 12:32 PM

I darkened the pencil mark. Also a pic of master and booster.

**kwmech** · 10-17-2014, 12:42 PM

What's up with all the upside down pictures lately?

**FirstOwner69** · 10-17-2014, 01:01 PM

Davepl did this recently. You could PM the question to him.

Can you get in there with a shortened drill bit in a right angle drive or from inside the cab?

paulbrgr9999 · 10-17-2014, 01:50 PM

Thanks all for helping. I got it done. Used a dremell to start a tiny hole so I could see light from the hole on the inside of the cab. Then drilled from the inside.

Now the the big problem. The brake lines. But thats a hole different thread and drama!

10-17-2014, 12:16 PM	#1
paulbrgr9999 Registered User Join Date: Jun 2013 Location: anaheim, ca Posts: 148	disk swap bracket question How did you guys drill this hole in the firewall? (See pic.) Look closely and you can see the pencil mark I made where the hole needs to be. Sorry the pic is sideways. I cant get a drill in that tight spot to drill a straight hole for the bolt that needs to come through and secure the bracket from the booster. And drilling from the other side inside the cab makes me concerned that the hole will not be exactly in the right place. thanks Attached Images

10-17-2014, 12:25 PM	#2
no1udknow Registered User Join Date: Jan 2014 Location: Sacramento,California Posts: 696	Re: disk swap bracket question I can't see the pencil mark, but what booster are you using? maybe try using a air ratchet with a self tapping screw to make a pilot hole then go inside and drill outward. Or use a center punch, and then go inside and look for the dimple, punch it back the other way, and drill it. __________________ Built not bought! My dad always tried to convince me HEI was pointless! Welding is a lot like sex, you don't have to be great with the rod as long as you thoroughly prep the surface and your good at grinding My build : 68 C10 Short Bed Conversion

10-17-2014, 12:32 PM	#3
paulbrgr9999 Registered User Join Date: Jun 2013 Location: anaheim, ca Posts: 148	Re: disk swap bracket question I darkened the pencil mark. Also a pic of master and booster. Attached Images

10-17-2014, 12:42 PM	#4
kwmech Senior Member Join Date: Mar 2003 Location: Colfax-California Posts: 8,650	Re: disk swap bracket question What's up with all the upside down pictures lately?

10-17-2014, 01:01 PM	#5
FirstOwner69 Senior Member Join Date: May 2010 Location: Wisconsin & Arizona Posts: 4,852	Re: disk swap bracket question Davepl did this recently. You could PM the question to him. Can you get in there with a shortened drill bit in a right angle drive or from inside the cab?

10-17-2014, 01:50 PM	#6
paulbrgr9999 Registered User Join Date: Jun 2013 Location: anaheim, ca Posts: 148	Re: disk swap bracket question Thanks all for helping. I got it done. Used a dremell to start a tiny hole so I could see light from the hole on the inside of the cab. Then drilled from the inside. Now the the big problem. The brake lines. But thats a hole different thread and drama!



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