 Exhaust Stud Heli Coil Pulled Out, Wou is me, Help! Correction Time Sert came out |
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| 913B |
 Jul 31 2011, 08:16 PM
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#1
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Senior Member  Group: Members Posts: 863 Joined: 25-April 05 From: South Bay/SoCal Member No.: 3,983 Region Association: None  |
So the continuing saga of fitting the SS heat exchangers continue. I somehow pulled out the heli coil repair on the exhaust stud. The coil measures 9.5mm OD.
I suppose I need to re-tap the hole with a step stud. So what size step stud should I use ?? M8 to (M10 or M11) ? Where would I find such a stud ? Is it do-able, drilling and tapping from under the engine ? How the heck am I going to keep the bit and tap straight and not F/up ? Man it never ends with old cars...... (IMG:style_emoticons/default/ar15.gif) Thanks in advance for everyones help !!!! I really appreciate it. (IMG:style_emoticons/default/beerchug.gif)    |
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| 913B |
Aug 7 2011, 10:21 PM
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#2
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Senior Member Group: Members Posts: 863 Joined: 25-April 05 From: South Bay/SoCal Member No.: 3,983 Region Association: None |
I am 1 lucky SOB. I was successful this weekend. Thanks to the help of all your support and suggestions. What helped was slowly drilling in steps to the desired 27/64 bit for the ez lock. Yeah I can see how a hand drill would have helped. My power handdrill lickily had a speed control so I turned it way down. Oh, for the EZ lok, FYI if you want a free sample. They will send it to for free. ezlok.com They are great and I would use it again in the future.
My new question is the replacement stud I screwed in. It tightens up too far deep in the hole. When I test fit my heat exchangers there are not enough threads to screw the nut. The desired depth I can rotate the stud to by hand. So would it be ok to add some blu loctite and screw the stud to desired depth which will give me enough threads for the nut or just not use any loctite at all and just tighten it down with the HE ???????? I even thought about using a CV bolt instead. Would this ok to use or was there a very good reason why there was a stud there originally instead of a bolt. Man I dodged another bullet this weekend. Thanks for all the help guys.   |
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| Cap'n Krusty |
Aug 8 2011, 08:22 AM
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#3
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Cap'n Krusty Group: Members Posts: 10,794 Joined: 24-June 04 From: Santa Maria, CA Member No.: 2,246 Region Association: Central California |
QUOTE(porsche913b_sp @ Aug 7 2011, 09:21 PM)  I am 1 lucky SOB. I was successful this weekend. Thanks to the help of all your support and suggestions. What helped was slowly drilling in steps to the desired 27/64 bit for the ez lock. Yeah I can see how a hand drill would have helped. My power handdrill lickily had a speed control so I turned it way down. Oh, for the EZ lok, FYI if you want a free sample. They will send it to for free. ezlok.com They are great and I would use it again in the future. My new question is the replacement stud I screwed in. It tightens up too far deep in the hole. When I test fit my heat exchangers there are not enough threads to screw the nut. The desired depth I can rotate the stud to by hand. So would it be ok to add some blu loctite and screw the stud to desired depth which will give me enough threads for the nut or just not use any loctite at all and just tighten it down with the HE ???????? I even thought about using a CV bolt instead. Would this ok to use or was there a very good reason why there was a stud there originally instead of a bolt. Man I dodged another bullet this weekend. Thanks for all the help guys. One would think that the obvious answer, "use a longer stud", would have come to mind. Possibly even the "correct" stud! The Cap'n |
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Posts in this topic
porsche913b_sp Exhaust Stud Heli Coil Pulled Out Jul 31 2011, 08:16 PM
turnaround89 Its not that same area, however, i just had the th... Jul 31 2011, 08:22 PM kg6dxn You need a time-sert. Search ebay. Way better than... Jul 31 2011, 08:23 PM HAM Inc Your best bet now will be to get a M10x1.5 Time-Se... Jul 31 2011, 08:44 PM iamchappy i went through this, i fixed it with a very stout ... Jul 31 2011, 08:50 PM KaptKaos Be careful with the step-stud. You need to make s... Jul 31 2011, 08:57 PM sean_v8_914 ouch, Hoffman laid that one out nicely. Jul 31 2011, 08:58 PM KaptKaos Not trying to 1-up Len. Just trying to add to the... Jul 31 2011, 09:01 PM sean_v8_914 I use a fixture t ensure the holes and tap threads... Jul 31 2011, 09:05 PM Woody The picture looks like a time cert. It has a shoul... Jul 31 2011, 10:14 PM porsche913b_sp dam that time sert pic from ebay looks like exactl... Jul 31 2011, 10:22 PM porsche913b_sp dam that time sert pic from ebay looks like exactl... Jul 31 2011, 10:23 PM Cap'n Krusty You won't like this, but read it anyway. Remo... Jul 31 2011, 10:46 PM porsche913b_sp Dam it. I dont think I have the minimum 9/16 depth... Jul 31 2011, 11:16 PM rjames
I did this a couple of years ago with the engine... Jul 31 2011, 11:16 PM HAM Inc
Everything The Cap'n said is correct. I'v... Aug 1 2011, 07:06 AM porsche913b_sp I don't drill too straight let alone run a tap... Aug 1 2011, 08:07 AM HAM Inc Because of the proximity of the ex seat to the stu... Aug 1 2011, 08:36 AM jcd914 I have never used E-Z LOK inserts so I can't r... Aug 1 2011, 01:40 PM HAM Inc The M8 EZ lock O.D. is ~ the same size as the M10 ... Aug 1 2011, 01:51 PM porsche913b_sp ok, so I checked it again, appears the depth of ho... Aug 1 2011, 05:56 PM porsche913b_sp Hmm who sells the normal M8-1.25 exhaust stud ? Aug 1 2011, 06:03 PM iamchappy Both myself and Phoenix914 have used the EZLOC wit... Aug 1 2011, 07:31 PM
Cap'n Krusty
Both myself and Phoenix914 have used the EZLOC wi... Aug 1 2011, 07:41 PM porsche913b_sp I found this at http://www.mcmaster.com/#
93275A0... Aug 1 2011, 08:26 PM porsche913b_sp
Both myself and Phoenix914 have used the EZLOC wi... Aug 1 2011, 08:31 PM iamchappy Big flat screw driver. Used a punch to lock the Ez... Aug 1 2011, 08:40 PM rjames
If you go slow, it should be fairly easy to dril... Aug 2 2011, 12:30 PM Jake Raby This repair with the engine together requires surg... Aug 2 2011, 01:48 PM Cap'n Krusty I think more luck than precision .................... Aug 2 2011, 06:16 PM Woody I've done this same repair on my car and its b... Aug 3 2011, 06:54 AM 76-914
I've done this same repair on my car and its ... Aug 3 2011, 08:29 AM Phoenix-MN
Both myself and Phoenix914 have used the EZLOC wi... Aug 3 2011, 07:45 AM Bartlett 914
[quote name='iamchappy' post='1518033' date='Aug ... Aug 3 2011, 09:09 AM iamchappy Fastenal carries them also.
I had to make an ext... Aug 3 2011, 07:54 AM 76-914 :thumbsup: Aug 8 2011, 08:01 AM |
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