Thank you for deciphering this, guys. You should be working in intelligence:-)
I agree. "Johnīs Automotive" is not very confidence inspiring and there is no information to be found on the web. On the other hand; after decades of spending foolish money on old cars and motorbikes I have met overpriced idiots in "specialist workshops" and wizards in backyard garages. Letīs just hope John is one of the latter and knew his way around old 911s back in 1999.
The engine has different numbers on the fan housing and on the left valve cover. Where the engine number normally is stamped (on the right side under the fan housing) it is blank, indicating a replacement case:
So I guess that I have a replacement magnesium 2.7 case and that the engine had a con rod failure already at 68 thousand miles (!) in 1999. The latest odometer reading on the invoices is 78000 miles from 2002. After that it was changed to km/t and not driven very much.
The car runs strong, but coming from a fast Euro 3.2 I had initially thought of upping the compression and changing the cam. I guess Iīll wait until the engine needs a major overhaul. The engine already has Carrera chain tensioners, SSI headers/Dansk muffler, 11-blade fan and all thermal reactor stuff removed, so it has had the most needed updates at some time.
Even without front oil cooler I never manage to get the oil temperature over an indicated 210 on full throttle in hot weather. 10 minutes of cruising home and it is down to 170, so it seems healthy.
BTW: When changing from 5-blade to 11-blade fan is also the fan housing changed? (explaining the different engine numbers)