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SCadaddle SCadaddle is offline
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Join Date: Jul 2012
Location: Mississippi
Posts: 1,282
No difference in the head studs on an original SC vs. Carrera. The only reason more of them are broken on the SC's than Carreras is due to the fact that the SC's are older cars---corrosion on the shaft of the dilivar studs is where failure begins. My friend the Porsche Guru has even seen broken head studs on 964's.

SC's have larger connecting rod bolts than the Carreras. Rod bolt failure has been demonstrated more often in an over-revved Carrera than the SC's.

Carrera hydraulic chain tensioners are prone to failure as well. The late SC's had better tensioners and wide idler arms that made them more reliable than earlier tensioners. And you can put a safety collar on them for peanuts.

The only reason I would prefer a 915 Carrera over an SC is for the Motronic fuel injection vs. the CIS of the SC. The CIS is not bad and generally works well, but the Motronic fuel injection is just a more modern system.

What is your budget?

Last edited by SCadaddle; 03-16-2016 at 07:35 AM..
Old 03-16-2016, 07:30 AM
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