The Ford Barn

Brad · 09-17-2015, 04:52 PM

can I replace a 7/16 stud with a 12mm I have a stripped thread in the block what's the best way to do a fix without removing the head can I drill out the 7/16 threaded hole to the next larger size.

Ronnie · 09-17-2015, 06:09 PM

Remove the head and do it properly don't fudge it up then you will really be locking for help. Heli coil is a good repair,there are others as well.

R

WestCoast · 09-17-2015, 06:16 PM

Ronnies right, spend a few hours and remove the head an heli coil it, any other way your going to mickey mouse it and it will come back and bite you in the butt

51 MERC-CT · 09-17-2015, 06:17 PM

Ditto on pull the head and do it right. It's not the dia. of the bolt that presents the problem it's the different thread count.

Capt Kirk · 09-17-2015, 06:20 PM

Brad, I'm assuming you have a flathead. Personally, I'm not going to give you advice that condones jury-rigging. I'd pull the head, and put a heli-coil in the problem hole. I wouldn't think it would take more than a few hours to do and you could rest comfortably knowing that you did it right. Head bolts/studs go through a lot and they're not something to try to cut corners on.

Capt Kirk · 09-17-2015, 06:22 PM

Sponsored Links (Register now to hide all advertisements)

LOL...looks like others beat me to the punch while I was typing!

bobH · 09-17-2015, 07:10 PM

Once beyond all the 'right' fixes, go search the archives for Ron's comments. You won't be the first to use the metric fastener, or even a 1/2-13. I'm not offering a recommendation, all I'm saying is, it has been done, and it works. It's just an old Ford, originally serviced with a monkey wrench and a hammer. You aren't working on a 'concourse' car are you? (JMHO)

Capt Kirk · 09-17-2015, 08:32 PM

Bob. I totally respect all of Ron's responses...I really do. A guy could drive an old railroad spike in that stud bolt hole and would probably be fine. Doesn't mean it's the right way to solve the problem. It's an easy problem to solve and doesn't take that much time to do it right....and not expensive at all. Fix it right and be done with it!

Brad · 09-18-2015, 06:55 AM

Thanks guys kind a through it was the best way to do it

09-17-2015, 04:52 PM	#1
Brad Junior Member Join Date: May 2010 Posts: 25	head bolt replacement with a12mm can I replace a 7/16 stud with a 12mm I have a stripped thread in the block what's the best way to do a fix without removing the head can I drill out the 7/16 threaded hole to the next larger size.

09-17-2015, 06:09 PM	#2
Ronnie Senior Member Join Date: May 2010 Location: Canada Where it snows Posts: 2,058	Re: head bolt replacement with a12mm Remove the head and do it properly don't fudge it up then you will really be locking for help. Heli coil is a good repair,there are others as well. R

09-17-2015, 06:16 PM	#3
WestCoast Senior Member Join Date: Sep 2014 Location: oroville calif Posts: 893	Re: head bolt replacement with a12mm Ronnies right, spend a few hours and remove the head an heli coil it, any other way your going to mickey mouse it and it will come back and bite you in the butt

09-17-2015, 06:17 PM	#4
51 MERC-CT Senior Member Join Date: May 2010 Location: East Hartford, Ct Posts: 5,898	Re: head bolt replacement with a12mm Ditto on pull the head and do it right. It's not the dia. of the bolt that presents the problem it's the different thread count. __________________ DON'T RECALL DOING SOMETHING FOR MYSELF BASED ON SOMEONE ELSE'S LIKES OR DISLIKES

09-17-2015, 06:20 PM	#5
Capt Kirk Senior Member Join Date: May 2015 Location: Clarkston MI Posts: 830	Re: head bolt replacement with a12mm Brad, I'm assuming you have a flathead. Personally, I'm not going to give you advice that condones jury-rigging. I'd pull the head, and put a heli-coil in the problem hole. I wouldn't think it would take more than a few hours to do and you could rest comfortably knowing that you did it right. Head bolts/studs go through a lot and they're not something to try to cut corners on. __________________ 35 Ford Cabriolet 56 Chevy Pickup 63 VW Bug Empty wallet

09-17-2015, 06:22 PM	#6
Capt Kirk Senior Member Join Date: May 2015 Location: Clarkston MI Posts: 830	Re: head bolt replacement with a12mm Sponsored Links (Register now to hide all advertisements) LOL...looks like others beat me to the punch while I was typing! __________________ 35 Ford Cabriolet 56 Chevy Pickup 63 VW Bug Empty wallet

09-17-2015, 07:10 PM	#7
bobH Senior Member Join Date: May 2010 Location: so cal, placerville, vegas Posts: 1,394	Re: head bolt replacement with a12mm Once beyond all the 'right' fixes, go search the archives for Ron's comments. You won't be the first to use the metric fastener, or even a 1/2-13. I'm not offering a recommendation, all I'm saying is, it has been done, and it works. It's just an old Ford, originally serviced with a monkey wrench and a hammer. You aren't working on a 'concourse' car are you? (JMHO)

09-17-2015, 08:32 PM	#8
Capt Kirk Senior Member Join Date: May 2015 Location: Clarkston MI Posts: 830	Re: head bolt replacement with a12mm Bob. I totally respect all of Ron's responses...I really do. A guy could drive an old railroad spike in that stud bolt hole and would probably be fine. Doesn't mean it's the right way to solve the problem. It's an easy problem to solve and doesn't take that much time to do it right....and not expensive at all. Fix it right and be done with it! __________________ 35 Ford Cabriolet 56 Chevy Pickup 63 VW Bug Empty wallet

09-18-2015, 06:55 AM	#9
Brad Junior Member Join Date: May 2010 Posts: 25	Re: head bolt replacement with a12mm Thanks guys kind a through it was the best way to do it