I'm trying to make sense of the engine numbers for a '69T I purchased a few months ago. I searched the registry but haven't found much pertaining to the numbers on the case, heads and fan upright. The motor is not original to the car so I don't know the exact build specs of the motor. Any input and direction would be great. Thanks!
Dave Raab
O6 R702 ESR1852
1986 Carrera
Well...your case appears to be from a 3.2 L SC...
Peter Kane
'72 911S Targa
Message Board Co-Moderator - Early 911S Registry #100
I doubt anyone will make sense of the eng number except the guy who stamped it; that's not a factory stamp.
Definitely a late motor.
Anytime we go into these "blind motor" scenarios we usually dyno and check cam number on end of the cam; that will tell you what state of tune.
If it's got MFI and not carbs you've probably got a mildly hot motor there; one that someone spent some dough building.
If it has 40IDA's and small venturis then it's probably a stock CIS/DME motor with carbs thrown on it.
(The A/C pulley and no A/C would lead me to believe it's probably a stock motor.)
How about pics of intake and exhaust?
Last edited by Frank Beck; 11-01-2014 at 08:54 AM.
The case is probably a 3.0 SC case as it has sump plate castings. When the 964's came out all replacement parts that are interchangeable with earlier castings were changed. I bought a new cam housing in like 1990 for an early small journal application and it had 964 casting #. So the above engine is a mix of parts for sure.
Thanks for the input guys.
The motor has 40 webers installed. I don't have info on the Cam numbers unfortunately. I have some info from the previous owner indicating it is a 3.2SS build, single plug but that information is limited as well. I am happy with how it runs and it "feels" like a strong motor. Here is a picture of intake and exhaust
Dave Raab
O6 R702 ESR1852
1986 Carrera
Dave,
Looks like a crime scene.
Everything in your photo makes sense except the pen. What was that used for? Is this a riddle?
How about a pic of the distributor?
Haha! There were no Porsches injured in that photo. I'll post a picture of the distributor when I get home. I don't have a good comeback for the pen in the photo. For some reason I feel it necessary to have a pen handy at all times. Probably some weird DNA glitch
Dave Raab
O6 R702 ESR1852
1986 Carrera
This is my thread on the case casting revisions; as in your first photo:
http://www.early911sregistry.org/for...case-Revisions
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