Engine Mileage - Porsche 2012 911 GT3 CUP Technical Manual

3.9.

Engine mileage

Engine rpm
1.) < 8,500 rpm
2.) 9,000 – 9,500 rpm
3.) > 9,500 rpm
4.) > 10,000 rpm
The engine in the 2012 911 GT3 Cup is designed to rev to a maximum of
8,500 rpm, in this case the rebuild interval is 50 hours. The rebuild
interval changes as follows if this maximum rev limit is exceeded:
uration
D
-
Over 6 seconds
Over 2 seconds
When exceeded for first time
If criteria 3.) and 4.) are met the minimum amount of parts required for a
rebuild are as follows:
- replace all connecting rod bearings
- replace damaged connecting rods
- replace all connecting rod bolts
- replace main bearings
- replace all pistons, cylinders and water jackets
- leak-test on cylinder-heads
- replace both timing chains
- replace both timing chain tensioners
- replace all cam followers
- replace all valve springs
Rebuild
after 50 hours
Immediate check
dynamometer
Immediate rebuild
Immediate rebuild
on
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