1970T Engine # Question

[pgeorgeson]

I have a 1970T that was purchased new in Germany (by an American serviceman). It was a June 1970 build Karmann Coupe (build # 3697). It has a 911/01 5 speed manual transmission (# 7701356). This all matches the Porsche Production Specifications that I got from the factory.

The Specifications say it had a 911/07 engine. I believe it has the original motor. However, my confusion is the engine number, which is 6109446. By everything I can find, that number looks like US Sportomatic engine.

Two questions. First, am I decoding that number correctly (as a Sportomatic motor)? Second, if so, is there any way it could have left the factory with that motor?

[30westrob]

I would suggest you look for engine type #. If you at the bottom of the vertical serial # boss, then look slightly forward on the horizontal position of the engine case. You will find the type#, sometimes hidden by engine grime. Rob

[PNW Targa]

Locating the engine type should help quite a bit. Engine numbers can be a bit wonky to decode.

The table that I have shows two sets of ranges for Type 911/07 (USA) engines in 1969/1970 911T models. The engine number ranges are 610 5001 - 610 7999 and 610 8501 - 610 9955. That second range seems to be where your engine number lands.

The USA sporto engine numbers fall in the middle range: 610 8001 - 610 8374. Sporto cars should also have a 911/08 engine type number.

- Rich

[pgeorgeson]

Engine type is 911/07. So it sounds like it is in the second group that Rich mentions.

[Mark Salvetti]

Let me throw this out to you, as it will probably come up at some point in the future.

The Porsche Red Book is often cited as a great resource, and it contradicts Rich's info:



That second range of numbers is shown here as a 911E Type 911/01 engine. But this must be wrong, as it is different from what you know you own.

Is your VIN in the 9110120001-9110124126 range?

Mark

[pgeorgeson]

Mark,
Yes, VIN is in that range: xxxxxx3697. Seems like different sources all have different information on engine numbers. I know from the Porsche Production Specifications that it is a ‘70 T Karmann Coupe that came with a 911/07 engine. All that matches as (as does everything else on the car). It is just the higher range engine # (9446) that seems to be throwing everything off.