Subject	If you have a tap, you can see that the threads are not
Posted by	zellamay on October 04, 2011 at 4:03 PM
	This message has been viewed 154 times.
In Reply To	first, i recommend chasing the threads ALWAYS with a posted by ztunerz on October 04, 2011 at 02:54 PM
Message	full to the bottom. Even a "bottoming tap" has some lead to it, and will not create a perfect thread all the way to the bottom. Same with the thread chaser. If you hand tighten a stud, it will stop when the stud threads begin to engage the imperfect threads in the bottom of the hole. By backing it out (how far? that's a matter of opinion and experience, hence the different opinions), you are sure that you are back into perfect threads. ... It would be possible to create a perfect thread almost to the bottom, and if the stud had a large enough chamfer on it, then it's possible the stud would bottom out before the meeting imperfect threads, but I wouldn't count on it unless I had done the threading myself or did some serious measuring first.
Follow Ups	How do you install you ARP head bolts? - toykoz32 02:57:08 10/04/11 I install them by hand until they bottom - aliaZ 08:04:12 10/04/11 Why do you back them out ? (n/m) - ztunerz 09:55:24 10/04/11 ARP recommends it (n/m) - Russell@Z1 10:43:29 10/04/11 Understand but what is the reasoning behind this ? (n/m) - ztunerz 10:50:55 10/04/11 I would suppose that if the stud is bottomed out before - kkrofft (OH) 11:00:44 10/04/11 Makes sense. (n/m) - BigTDogg (MA) 11:18:32 10/04/11 that would imply that the resistance of the threads - ztunerz 13:02:23 10/04/11 Sure. But it could happen and by providing this instruction - kkrofft (OH) 13:15:40 10/04/11 not really because assuming >> - ztunerz 14:49:36 10/04/11 And, the threads are not perfect all the way to the bottom - zellamay 13:04:53 10/04/11 first, i recommend chasing the threads ALWAYS with a - ztunerz 14:54:10 10/04/11 If you have a tap, you can see that the threads are not - zellamay 16:03:28 10/04/11 Studs are supposed to have a shoulder on them - BlackholeZ 13:06:46 10/04/11 on arps installation FAQ nowhere do i see - ztunerz 14:58:39 10/04/11 Yes, I didn't see it either. Maybe they figure that if - zellamay 16:06:37 10/04/11 because bottoming them out can result in the stud - aliaZ 15:25:39 10/04/11 Finally a reasonable answer (n/m) - ztunerz 21:05:41 10/04/11 When you "bottom them out", the stud is probably not - zellamay 22:14:52 10/04/11 You torque them down because the bolts/studs stretch - soulpwr 10:17:06 10/04/11 I think the maximum thread engagement in the block is best - LitlElvis 10:36:20 10/04/11 Yea I meant stud . . . ill give the heat gun trick a try (n/m) - toykoz32 14:26:49 10/04/11 i have often gone in and retorqued the studs after - ztunerz 14:51:56 10/04/11 This is how I was taught to do it... - na300zx (OH) 17:09:00 10/04/11
Post a Followup	You cannot reply to this message because you are not logged in.