Which engine is this?

[Robert Espeseth]

Hello folks, my son and me has recently puchased another 911SC, a 1981 model which has gotten the engine replaced sometime. We got a little confused about what type of engine that is installed, can anyone in here clear up?

The engine code is clearly stamped 930/16, and the case is the casting with the drain plug at the side as on the 3,2. So far this tells us it is a late 83 production 3 liter case.

But the serial number on the same case is *6700148*...and that does not match with what we can find in our litterature...please take a look at the picture of the numbers.

[TRE Cup]

that is because it looks suspiciously like a file and stamp job. the font is not correct and the edges of the number casting are sharp. If you compare to a proper case you will see that the edges of the casting are beveled with a grinder and the numbers are sized differently

[Robert Espeseth]

OK, any theory about why people do so, what is the motivation? ...this car comes from NY.

[fryardds]

Right on Dave. Not a Factory stamped serial #. At least it's not 663XXXX.

[darrin]

Originally Posted by Robert Espeseth

OK, any theory about why people do so, what is the motivation? ...this car comes from NY.

perhaps to hide the true source of the engine?

[timmy2]

Perhaps an unstamped replacement case?

[db_cooper]

Looks like a replacement case..saw a few from time to time.

[Matt Monson]

Someone didn't know what they were doing. They took a 930/16 911SC case (likely an unstamped replacement case ) and gave it a 930/60 turbo serial number? That's a WTFBBQ if I ever saw one.

[Brad Beck]

Maybe from a stolen car?

[Danny_Ocean]

Originally Posted by Brad Beck

Maybe from a stolen car?

Does the stamped engine # correlate to the VIN in any way?

[Robert Espeseth]

Originally Posted by Danny_Ocean

Does the stamped engine # correlate to the VIN in any way?

No, the engine is not correct to the car. VIN tells 81SC, the engine has the updated case that came late 83...

[Danny_Ocean]

Originally Posted by Robert Espeseth

No, the engine is not correct to the car. VIN tells 81SC, the engine has the updated case that came late 83...

My (rhetorical) question was to Brad Beck who is implying your engine came from a stolen car. The engine #, as far as I know, isn't repeated in the VIN, so there is no need to re-stamp the block in such situation.

[group911@aol.co]

Originally Posted by db_cooper

Looks like a replacement case..saw a few from time to time.

Replacement cases didn't come with stamped type number and that appears to be a factory stamped type number. Borrowed and filed/ restamped engine.