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Registered
Join Date: Jun 2004
Location: Friendswood, TX
Posts: 500
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Stuck Head Studs and stripped flywheel bolts
Well,
After seeing the broken exhaust valve guide on my 930/02 3.0 Carrera, I realized that I was going to get a chance to see my crank soon. I bought the engine that had a valve job around 10K ago. I figured that I was just going to have to do some top end seal work. After seeing the broken valve guide, and listing to my Fathers good advice, I realized that it was time to rebuild to learn all the engines mysteries. Attached is the picture of the fun I had. One side of the engine was dilvar and one side steel. So I pulled the dilvar. They all cam out fine except one. After much heat and continuous pressure it finally came free. Thanks Wayne for the advice in your book!! Then to the flywheel. I took care to pull the first three out, but got sloppy on the last three. I figured this out when I saw shards of the tool and bolt fly in the air. All but one bolt came out after much coaxing. It was then that we decided to weld the broken tool to the stripped bolt. Thanks to one of Dad's friend and his great welding, the bolt came out and now serves as a monument of the cost of haste. I would recommend this fix over grinding it out. The flywheel or the pilot bearing race are none the worst for wear. The rest of the engine has checked out fine. Now to the machine shop. 
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John F. Lewis 74' 911S Targa + 930/02 76' 914 - Eternal Type IV project FOR SALE |
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09-13-2004, 07:27 PM
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Join Date: Aug 2003
Location: Denver
Posts: 1,242
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Never thought about welding the tool to the bolt. Pretty cool idea.
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1999 996 C4 Cabriolet 1997 BMW M3 (Hail) 1985 928 S (Sold) 1982 SC Targa (Sold) |
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09-14-2004, 11:55 AM
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I would rather be driving
Join Date: Apr 2000
Location: Austin, TX
Posts: 9,108
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NIce weld too! Great solution. At least it was on the last one.
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Jamie - I can explain it to you. But I can not understand it for you. 71 911T SWT - Sun and Fun Mobile 72 911T project car. "Minne" - A tangy version of tangerine #projectminne classicautowerks.com - EFI conversion parts and suspension setups. IG Classicautowerks |
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09-14-2004, 01:45 PM
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Registered
Join Date: Jun 2004
Location: Friendswood, TX
Posts: 500
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The joys of doing a restoration out at my parents farm. Everybody around knows how to weld. Bob Wagner was the artist with the stick welder.
Other options were to weld a nut to the bolt head, or if the head is broken off, weld a washer and nut to the top of the stud. Damn I need to learn how to weld! 
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John F. Lewis 74' 911S Targa + 930/02 76' 914 - Eternal Type IV project FOR SALE |
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09-14-2004, 07:02 PM
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