 Is my case shot? |
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| Cevan |
 Jan 4 2010, 07:47 PM
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#1
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Senior Member  Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351  |
So after I had removed all the head studs from the case, I noticed a couple had come out real hard, as if something was wrong with the threads. After cleaning the threads of the stud, I couldn't thread them back in the two suspect holes.
I got a 12mmx 1.5tap and chased those holes. Now, the head studs go right in and they wiggle!! Even after I bottom them out, they can be moved relative to where they exit the case. Is the case shot? What did I do wrong? |
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| Jake Raby |
Jan 5 2010, 09:55 AM
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#2
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Engine Surgeon Group: Members Posts: 9,398 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
You should have used a thread chaser, not a tap. The chase has much shallower roots and doesn't create this issue.
Now that it has occurred you can drill the case 2mm over size and install a time-sert. Thats your best bet for something thats fairly easy to do and inexpensive. |
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| Cevan |
Jan 5 2010, 01:50 PM
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#3
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Senior Member Group: Members Posts: 1,079 Joined: 11-December 06 From: Western Massachusetts Member No.: 7,351 |
QUOTE(Jake Raby @ Jan 5 2010, 10:55 AM)  You should have used a thread chaser, not a tap. The chase has much shallower roots and doesn't create this issue. Now that it has occurred you can drill the case 2mm over size and install a time-sert. Thats your best bet for something thats fairly easy to do and inexpensive. I hope others learn from my mistake. I contacted my local Time Sert dealer and the kit plus the correct size inserts is a little over $100. Do I need to have a machine shop drill and tap the holes in order to keep everything square or is this something I can hand drill and tap? |
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Posts in this topic
Cevan Is my case shot? Jan 4 2010, 07:47 PM
bam914 They should thread in tight like that. The only t... Jan 4 2010, 08:07 PM
Van
They should thread in tight like that. The only ... Jan 5 2010, 08:06 AM Cevan
They should thread in tight like that. The only... Jan 5 2010, 09:12 AM Cap'n Krusty A standard tap, the one everybody has, is NOT mean... Jan 4 2010, 08:51 PM Cevan Seeing as I screwed up only one of the case halves... Jan 4 2010, 09:42 PM bdstone914
Seeing as I screwed up only one of the case halve... Jan 4 2010, 10:05 PM kwales While you were cleaning the studs, did you notice ... Jan 4 2010, 10:36 PM Mark Henry And NO to using two different case halves. They ar... Jan 4 2010, 10:41 PM sww914 Take it to a machine shop and have them fix it. It... Jan 4 2010, 10:58 PM Cevan Thanks for the replies. Looking back on what I di... Jan 5 2010, 07:10 AM Rand My bad - I was thinking exhaust studs. Disregard
... Jan 5 2010, 09:45 AM brp986s Definitely have a shop do it, and a good one at th... Jan 5 2010, 03:40 PM r_towle
You should have used a thread chaser, not a tap.... Jan 5 2010, 04:52 PM underthetire :agree:
Just make sure your table is square to th... Jan 5 2010, 04:54 PM kwales Most drill presses aren't an option....
That ... Jan 5 2010, 06:27 PM r_towle A drill press with a large top bolted in place wil... Jan 5 2010, 08:05 PM Dr Evil Thanks for posting this mistake. I have done simil... Jan 5 2010, 08:14 PM jmill
While you might be tempted to spend all your mone... Jan 5 2010, 09:30 PM Cevan Is a thread locker required when reinstalling the ... Jan 6 2010, 09:15 AM underthetire http://www.mcmaster.com/#inch/metric-threa...inser... Jan 6 2010, 11:24 AM Vacca Rabite Before you go and spend $100 on the TimeCert ... Jan 6 2010, 02:12 PM Cevan
Before you go and spend $100 on the TimeCert... Jan 6 2010, 02:30 PM underthetire
Before you go and spend $100 on the TimeCer... Jan 6 2010, 02:43 PM Cevan I'm getting a headache. :D
I think I'll ... Jan 6 2010, 02:47 PM ME733 :popcorn: Just out of curosity, why did you remov... Jan 6 2010, 06:39 PM r_towle Brockton, Dedham and Newburyport.
There are other... Jan 6 2010, 08:52 PM |
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