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Turbo Conversion Goes South!! Broken Studs

Finally after collecting all the parts needed to do my 3.0SC turbo conversion I got slapped in the face this morning with the worse possible problem...Broken Head studs

I removed the right side lower valve cover and 3 large objects fell into my oil pan, yep it was 3 broken off head stud ends and washers. I then moved over to the driver side valve cover and 2 more head stud ends fell into the pan

So now my 3 week turbo convertion project will turn into a 6~12 month engine rebuild, or if a come accross a 3.3 long block and pistons for the right price I might go that route.

Anyone out there got any good recomendations? I have herd of putting 3.3 P&C's with a 3.0L block with some small modifications but guess I really need to start reading the Porsche bible "How To Rebuild and Modify Porsche Engines "
Old 12-04-2007, 04:59 AM
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Crotchety Old Bastard
 
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That sux.
Have you tried to remove the offending studs and replace them?
3.3L jugs on a 3.0L engine = 3.1L displacement. A friend of mine has one of those factory built engines.
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Old 12-04-2007, 05:13 AM
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that does suck. I guess the only positive thing I can say, is that @ least it happened now (early on) and you can address the problem.

Good luck
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Old 12-04-2007, 05:24 AM
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For sure with the turbo pushing extra pressure to the heads this would have been found shortly after a couple of spool ups.

Have not tried to see if the studs can be replaced yet, I will get the entire engine out of the car this weekend, pictures clearly shows the stud



Old 12-04-2007, 05:45 AM
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Walking into my garge now is just down right depressing looking at all this stuff.. One minute I'm anticipating an upgraded 911 with all the turbo goodies and next minute I'm comptemplating a engine rebuild. lucky for me this car is not a daily driver..

Guess I can box all this up for awhile
Old 12-04-2007, 06:00 AM
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Sorry to hear of your dilemma...

Nice little parts cache.. I'ver got the reasonably priced 3.3 pistons you asked about, sorry no jugs

Good luck whatever you decided to do.

P-
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Old 12-04-2007, 07:14 AM
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That is bad news, sorry to here!
Afterwards you will have something that will last forever though!

Word of advice, get that stuff off the shelf quickly before it collapses and your buying bolton parts in addition.

Keep the forum advised of your progress!
Old 12-04-2007, 07:30 AM
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Im sorry- that kind of stuff seems to be the story of my life as well...
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Old 12-04-2007, 08:10 PM
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Did you do a compression and/or leak-down before disassembly?

You could just leave the case intact and mike the pistons and cylinders; remove and replace the head-studs, then you could do minor head cleanup….
Plenty of ways to go other than a total rebuild – just let the parts dictate what should be done unless you have fat wallet and plenty of time.

Munchovie.
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Old 12-04-2007, 08:48 PM
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awwwww man sorry to hear that, as mentioned you can now build a tough low compression beast to take a lot of boost!
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Old 12-04-2007, 11:52 PM
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That's just sad. I will be going the same route in the future, sure hope I dont get the same problem...
What turbo is that you are using ,type and specs.
looking forward to hear what you decide on.
regards
Jesper
Old 12-05-2007, 01:00 AM
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Jesper, I ended up with a Garrett To4E that was rebuilt and have also purchased some GSF headers from Albert who had a T4 Flange welded on. This combination with the 930 Euro fuel head should work out pretty good.
Old 12-05-2007, 06:37 AM
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Thanks for the reply.
What trim is the t04E in.
Old 12-05-2007, 12:37 PM
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