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83 911 Production Cab #10
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My first tap... Time-Serts to the rescue
Just use a Big Serts to fix one of the POs making the TX mount 14mm after he F.U. the 12mm hole.
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Who Will Live... Will See  83 911 Production Cab #10, Slightly Modified: Unslanted, 3.2, PMO EFI, TECgt, CE 911 CAM Sync / Pulley / Wires, SSI, Dansk Sport 2/2, 17" Euromeister, CKO GT3 Seats, Going SOK Super Charger |
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06-18-2013, 02:13 PM
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Straight shooter
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Helicoil can cause studs to not be perfectly vertical from the spigot face. This can cause other damage...
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“Of the value traps, the most widespread and pernicious is value rigidity. This is an inability to revalue what one sees because of commitment to previous values. In motorcycle maintenance, you MUST rediscover what you do as you go. Rigid values makes this impossible.” ― Robert M. Pirsig, Zen and the Art of Motorcycle Maintenance: An Inquiry Into Values Last edited by Lapkritis; 06-18-2013 at 03:06 PM.. |
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06-18-2013, 02:49 PM
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Registered
Join Date: Jan 2008
Location: Herts - UK
Posts: 56
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Ok,
Picked the engine up from the machine shop today. The photo of the stud in the first picture turns out to be the end of a broken drill bit! That's why it was so hard to drill it out and why weld wouldnt stick to it very well. It took the guy ages with numerous drill bits to finally drill it out. He wouldn't touch the three remaining studs as he said the metal was now very brittle and would break off. I'll try the welded-on nut trick over the weekend and see what happens. G.
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1974 911s (Backdated to RS Clone), 2006 Cayman S, 1963 MGB 
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06-21-2013, 03:48 AM
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Registered
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Use heat...and lots of a good fluid.
I would try to go through 2 or 3 heat/cool cycles to break them free...before trying to turn them. If you do go to the heat the block method...try some instant freeze (electronics store) on the stud when the case is hot....the temperature differential will help. Bob
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Bob Hutson |
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06-21-2013, 09:45 AM
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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If you don't want to risk screwing up the block at this point (machine shop couldn't extract them), find an EDM machining service. Not DIY, but less drama.
Sherwood |
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06-21-2013, 09:48 AM
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Registered
Join Date: Jan 2008
Location: Herts - UK
Posts: 56
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The welded nut trick worked! Very happy.
I simply put a blob of weld directly onto the end of the stud to ensure it had got a good hold, then welded a 17mm nut to that. - easy. I dont know what all the fuss was about. If an IT geek can do that, why was an engineering shop so afraid to try? Anyway, all the studs are out now. Next - get the case apart and start cleaning/measuring. G
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1974 911s (Backdated to RS Clone), 2006 Cayman S, 1963 MGB
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06-22-2013, 12:07 PM
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Das Babe
Das Babe Metalberiech
P911
Harley
