Anyone know nut size for studs to exhaust for mustang headers? June 03, 2009, 07:08:54 AM Anyone know nut size for studs to exhaust for mustang headers? I've tried 7/16 coarse thread and doesn't fit. Grabs a few threads and stops Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #1 – June 03, 2009, 08:43:52 AM I just used new header bolts.Nice and clean that way. Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #2 – June 03, 2009, 09:09:18 AM I checked the set here at my shop and its 7/16x14, and thats what you tried. Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #3 – June 03, 2009, 11:40:47 AM Yes, 7/16 -14 coarse and doesn't want to go up on. I've bead blasted them and everything so no dirt or grime in the threads either. Well Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #4 – June 03, 2009, 01:04:00 PM Sounds like you need to tap the holes... Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #5 – June 03, 2009, 02:35:41 PM I had the exact same problem with mine, they would start, and then they would lock up. Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #6 – June 03, 2009, 03:21:10 PM Run a die or a chaser over them. Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #7 – June 03, 2009, 06:58:55 PM Long bolts and nuts work too Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #8 – June 03, 2009, 07:04:43 PM They're shallow threads in the factory nuts...that's how most of the Ford exhaust bolts I've ever run across have been. Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #9 – June 03, 2009, 07:22:17 PM IIRC it is 7/16X20 going into the header and the other end where the H pipe retaining nut threads on is 7/16 x 14. I got some at ACE Hardware, but any good hardware with a fastener isle will have an exhaust stud drawer. Quote Selected
Anyone know nut size for studs to exhaust for mustang headers? Reply #10 – June 03, 2009, 10:45:48 PM 7/16-14 works fine now just needed to add anti seize to the studs and a bit of persuasion at the start and they spun right on with out a problem. X pipe is on:D Quote Selected
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