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Join Date: Feb 2013
Posts: 50
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How far can I go without this?
Just the one broken headstud from a 1982 sc
 
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02-16-2013, 12:44 PM
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Friend of Warren
Join Date: Oct 2000
Location: Lincoln, NE
Posts: 16,492
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Just the one? Did you check all of the others? If the rest of them are maintaining the proper torque, you can go a long time.
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Kurt V No more Porsches, but a revolving number of motorcycles. |
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02-16-2013, 12:46 PM
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ROW '78 911 Targa
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1 KM or 100,000 KM's. It's a crapshoot. The longer you wait, the more possibility of damage to your head and cylinder where it is broken.
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Dennis Euro 1978 SC Targa, SSI's, Dansk 2/1, PMO ITBs, Electric A/C Need a New Wiring Harness? PM or e-mail me. Search for "harnesses" in the classifieds. |
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02-16-2013, 12:48 PM
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Join Date: Feb 2013
Posts: 50
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Quote:
Not sure when the VCs were last removed - could have done 50K miles without it already for all I know.. |
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02-16-2013, 12:50 PM
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Somewhat obsessed......
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I drove on mine for a year. The PO did't know about it so who knows how long it went. When I finally tore it down to replace the dilavar studs, there was no damage to the head yet.
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02-16-2013, 12:52 PM
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Join Date: Feb 2013
Posts: 50
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Quote:
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02-16-2013, 12:56 PM
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Registered
Join Date: Apr 2005
Location: outta here
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JR |
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02-16-2013, 01:41 PM
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Banned
Join Date: Nov 2007
Location: Rockwall, Texas
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02-16-2013, 01:50 PM
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Somewhat obsessed......
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The long and short of it is I don't know. I discovered the broken stud when adjusting the valves right after I bought it. It looked more corroded than yours. I think it was broken for a while. I drove 2000 ish miles more before tearing it down. I may be an outlier but mine turned out ok. Keep a close eye on it though.
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02-16-2013, 02:29 PM
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Registered
Join Date: Jan 2002
Location: VA
Posts: 3,573
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Just out of curiosity, which motor did this come out of?
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'06 Cayman S '16 Cayenne '08 Audi RS 4 |
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02-16-2013, 04:08 PM
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Registered User
Join Date: Feb 2013
Posts: 50
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Quote:
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02-16-2013, 10:58 PM
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Registered User
Join Date: Feb 2013
Posts: 50
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Quote:
I was expecting the black coated studs. |
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02-16-2013, 11:08 PM
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Registered
Join Date: Jan 2002
Location: VA
Posts: 3,573
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Unless the car is a total basket case and something you consider disposable, I would go ahead and get all the studs replaced.
Yes, it is a nice chunk of coin, but I would also search the Engine Rebuild forum as well as this forum and get a feel for the added cost of what head and cylinder damage could cost.
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'06 Cayman S '16 Cayenne '08 Audi RS 4 |
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02-17-2013, 04:05 AM
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grateful user
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If it broke in the middle of the case somewhat, cyl 2 and 5, could last a while as the cam tower kinda keep everything together, if on the out side of cyl 1,3,4 or six, it could start making a poping sound on acceleration as soon as the little alum. seal breaks between the head and jug, time to fix once you hear the popping, as damage is now being done.
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fully disassembled, blasted, customized and restored 75 targa with factory hard top, 993 style turbo ft fenders, steel flares, C2 bumpers and rockers, 82 3.0 sc 9.5/1 engine with PMS flywheel, 964 cams, flowed heads, ssi's short geared 915 w/lsd, polybronze, bilstein,working lambda, modified and highly tuned cis, tensioners, pop valve, backdated exhaust and heater, 2300 lbs. no bolt left untouched. 1970 911E. Nice car but needs a re-do. |
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02-17-2013, 04:19 AM
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grateful user
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 damage from a boken head stud. The head and jug sealing suface get beat to crap. Just more machine work and more $$
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fully disassembled, blasted, customized and restored 75 targa with factory hard top, 993 style turbo ft fenders, steel flares, C2 bumpers and rockers, 82 3.0 sc 9.5/1 engine with PMS flywheel, 964 cams, flowed heads, ssi's short geared 915 w/lsd, polybronze, bilstein,working lambda, modified and highly tuned cis, tensioners, pop valve, backdated exhaust and heater, 2300 lbs. no bolt left untouched. 1970 911E. Nice car but needs a re-do. |
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02-17-2013, 04:22 AM
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Registered User
Join Date: Aug 2012
Location: New York
Posts: 31
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Just a Question,I'm new to P-cars. Why can't he just replace the broken head bolt,seems he got the bolt out. Until he can either afford to or have it fixed when rebuilding engine. If it runs fine and to prevent any further damage replace the bolt and re torque the head? Maybe a compression test and leak down test could help decide that?
Last edited by nowaydude; 02-17-2013 at 04:54 AM.. |
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02-17-2013, 04:46 AM
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Quote:
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Dustin |
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02-17-2013, 04:53 AM
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Registered User
Join Date: Aug 2012
Location: New York
Posts: 31
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OH!!! I see,I thought the hex part was the bolt head,didn't see the threads inside? It's actually a nut. Thanks
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02-17-2013, 05:12 AM
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Registered User
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Quote:
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Dustin |
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02-17-2013, 05:36 AM
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Registered
Join Date: Jul 2012
Location: Mississippi
Posts: 2,354
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See post #52 of this thread for a really ingenious tool. Might be worth a shot. My 82 SC engine is an early one of that production run, like 64C00097, and if Hans or Frans were as liberal with the loctite on your studs as they were with mine, it's going to be a tough go.
I will say this: You are at a cross-roads and the next thing you need to determine is whether or not you have the Mahle Nikasil pistons/cylinders or the KS Alusil pistons/cylinders. Do some homework before you decide to tear things down and pitch the piston rings in a pile on your work bench. Broken head removal without engine disassembly - insanity? Last edited by SCadaddle; 02-17-2013 at 07:24 AM.. |
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02-17-2013, 07:21 AM
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Heinz
Stuart (The Kieser)
75 Porsche 911
bike
1970 porsche E
