91 964 purchase-updated heads?
12-16-2008, 01:37 PM
#1
Rennlist Member
Thread Starter
91 964 purchase-updated heads?
I was wondering how to determine if a 91 c2 I am considering has the updated heads, the vin # is WP0AB2967MS410211
12-16-2008, 03:09 PM
#4
Rennlist Member
Look for the "ENGINE SERIAL NUMBER", it is on the right side of the engine under the a/c pump, hard to see, but look around you will find it.
Engine # 62M06836 or later has the updated cylinder heads.
Engine # 62M06836 or later has the updated cylinder heads.
12-16-2008, 03:18 PM
#5
Rennlist Member
Per Porsche TSB 9404 -
Models Affected:
911 Carrera 2/4 years 89 (K), 90 (L), and 91 (M) up to engine number
62 M06836, M64.01 - Manual
62 M52757, M64.02 - Tiptronic
The cylinder heads are supposed to be marked with a "-10" or "-20" on the intake flange. See red circled area in attached picture. But identifying the marks may be quite hard.
Models Affected:
911 Carrera 2/4 years 89 (K), 90 (L), and 91 (M) up to engine number
62 M06836, M64.01 - Manual
62 M52757, M64.02 - Tiptronic
The cylinder heads are supposed to be marked with a "-10" or "-20" on the intake flange. See red circled area in attached picture. But identifying the marks may be quite hard.
