When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Mine went somewhere between 120,000 and 125,000 miles and 34-35 years. Just one stud on the lower right side (#4 I think) and it fell off in my hand as soon as I opened my valve covers for valve adjustment.
eeny meany miny and Moe .. Moe Money more like it .
The Dilivar Gang are no more in my engine , their reign of tyrany is over !!
Mine did it at 260k km , as Dave mentioned I could hear a metal on metal tapping as I drove. I took valve cover off and it fell into my hand. By the time I got the engine out and on to the stand and rotated, 3 more fell out. All lowers all Dilivar, replaced with steel.
Last edited by theiceman; May 14, 2018 at 05:56 PM.
Its worth pointing out that this is not a catastrophic failure. One breaks. Start budgeting to have the top in end done.
Unlike an IMS failure of a more modern porsche. Immediately take your wallet out to buy a new engine . Or scrap your car
The 3.0 and 3.2 all break sooner or later. I won't look at any car that hasn't had studs replaced. The last 2 SC's I owned had new studs. One was an original 55K car. Time, not mileage in this case.
Stress risers on the studs created by corrosion.
Here are some from a '69 Group 3 Porsche factory engine. Every one of them broke. The "covers" held moisture. Moisture = Corrosion. Heat cycling did the rest.
Interesting results so far, although we only have 17 responses. I find it interesting that even though these cars are now 35 to 40 years old, some cars have not suffered this failure. It may happen to all of them at some point, but some have held up for several decades now. Wonder if mileage, heat/cool cycles/temps and/or moisture have something to do with it?
Interesting results so far, although we only have 17 responses. I find it interesting that even though these cars are now 35 to 40 years old, some cars have not suffered this failure. It may happen to all of them at some point, but some have held up for several decades now. Wonder if mileage, heat/cool cycles/temps and/or moisture have something to do with it?
I've seen low mile cars (30K) with broken studs that were kept up quite well. These studs corroded, created stress risers and snapped. No rhyme or reason but until a seller can prove the studs in a car
are replaced I'm not a buyer. It's not a matter of if.
Porsche 911 GT3 Artisan Edition Pays Homage to Japanese Culture
Slideshow: Porsche has created a Japan-only 911 GT3 Artisan Edition that blends track-ready hardware with design cues inspired by traditional Japanese craftsmanship.
Porsche Reveals Coupe Variant of the Electric Cayenne With a Fresh Look
Slideshow: Porsche's latest electric Cayenne Coupe blends dramatic styling with supercar acceleration, turning the brand's midsize SUV into a 1,139-horsepower flagship.
