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Location: Hamburg & Vancouver
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Head Stud Question
Can anyone tell me just from eyeballing the photos below whether the headstuds on my 1988 3.2 liter are the Dilavar studs that should be replaced???
Your replies are much appreciated.  
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_____________________ These are my principles. If you don't like them, I have others.—Groucho Marx |
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09-26-2006, 06:04 PM
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Test them with a magnet. Dilivar studs are non-magnetic.
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Tom Butler 1973 RSR Clone 1970 911E 914-6 GT Recreation in Process |
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09-26-2006, 06:09 PM
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...problem is the engine is already back together.
I had asked the shop to replace the head studs with Raceware studs as per everyones recommendations - but they tell me my studs looked "just fine" so didn't replace them. I only noticed from the photos that they hadn't been replaced.
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_____________________ These are my principles. If you don't like them, I have others.—Groucho Marx |
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09-26-2006, 06:24 PM
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Brando
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They appear to be differant on top than bottom. I would venture that they are the dilavar on bottom and steel on top like from the factory.
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Turbo powa! 1977 911s. it's cool |
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09-26-2006, 06:33 PM
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3.4 Bigger is better
Join Date: Nov 2003
Location: South Dakota
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The bottom studs are epoxy coated dilavar. That is what mine looked like. Two broken on an 88 Carrera with 88,000 miles.
The black are dilavar and the others are steel  These are the steel studs cleaned and ready to go back in the case. Red loctite of course 
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Michael 88 911 Diamond Blue CE Carrera 3.4 HC3.4 member 2020 Honda Passport |
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09-26-2006, 07:45 PM
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From the pictures they look just like the POS 4 broken head studs later SOB'ing Dilavars that I found on my motor that had been recently rebuilt.
The PO had it rebuilt and the shop left in the Dilavars and they lasted about 3 years and 30K miles. Good luck
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1987 911 Coupe-Current ride 2007 997TT-Sold 2006 997 C2S-Sold 1991 964 Turbo-Sold 1987 911 Targa-You never forget your first |
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09-26-2006, 09:52 PM
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They do look like Dilivar to me as well. I wouldn't panic however. First off there is not much you can do at this point. Second, I don't think the Carrera epoxy coated studs fail nearly as much as the SC studs. Remember you only see the failures on this site, not the thousands of engines with no failures. Odds are you'll be fine until your engine needs it's next rebuild.
Just keep an eye on them at every valve adjustment and try not to worry. -Andy
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72 Carrera RS replica, Spec 911 racer |
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09-27-2006, 08:38 AM
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If the engine's never been torn down, they are likely dilivar. However the later 993 steel studs also came coated and if the engine had been done in the past, perhaps they were replaced with the 993 ones then...
I think the coated 993 studs came around about 1.5-2 years ago, prior to that they were uncoated, and some were fully threaded.
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Chris ---------------------------------------------- 1996 993 RS Replica 2023 KTM 890 Adventure R 1971 Norton 750 Commando Alcon Brake Kits |
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09-27-2006, 03:11 PM
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I don't know if the studs need to be replaced, but I tell you what does need to be replaced -- the wheels on that thing standing right next to your engine!!!
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'79 911SC Targa -- "BLUVUDU" '83 930 Coupe -- "TURBAUX" |
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09-29-2006, 11:43 AM
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You talkin' to me?
Join Date: Sep 2005
Location: cupertino, ca
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The chickie? I dunno, she looks pretty hot for a circa-1970's babe. I'd have to see the entire chassis to be sure...
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-Chance ------------------------------------------- '90 C2 Cab - Temporarily out of service |
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09-29-2006, 12:33 PM
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Yup. That's my mechanic's stand-up cut-out of Pamela Anderson.
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_____________________ These are my principles. If you don't like them, I have others.—Groucho Marx |
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09-29-2006, 01:54 PM
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You talkin' to me?
Join Date: Sep 2005
Location: cupertino, ca
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Ah, I mean late '80s babe. The swimsuit threw me off. Speaking of swimsuits...
http://wickedweasel.com/usd/bikinis/default.asp Note - NSFW!
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-Chance ------------------------------------------- '90 C2 Cab - Temporarily out of service |
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09-29-2006, 02:22 PM
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Personally, I would have insisted they be replaced when the engine was out and apart. These engines are awesome but they were known to have problems in this area. Enjoy it!
Regards, Alex
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Its easier asking dumb questions than fixing dumb mistakes 1974 Porsche 911 Coupe, RSR Project 1976 Porsche 911 Targa, Black 1986 Porsche 911 Carrera, Black 2006 Porsche Cayenne S, Black |
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09-30-2006, 08:28 PM
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hoonkraft
1970 Porsche 911 S 
