engine # *6392956 someone?

gungadin · 07-14-2006, 01:23 AM

This is in a '76S
My dads old car. Once a bad leaker but now dry???

CliffBrown · 07-14-2006, 08:09 AM

Looks like a '69S.

andyjboy · 07-14-2006, 09:24 AM

... or a '79 3.0 SC - Porsche in their wisdom used this same series of engine numbers for both years !

Henry Schmidt · Henry Schmidt's Garage

Installed in a 76 car and no oil leaks I'd guess 1979 3.0.

Is it mag or aluminum?
We could use the designation number (930/??) to be certain.
This number is located on the engine case on the right side of the fan housing.

Case casting number will also tell us which one you have.

gungadin · 07-15-2006, 08:45 AM

That number looks like 930-OS
Does that make it magnesium or aluminum?
Still a '79 3.0L?

Henry Schmidt · Henry Schmidt's Garage

79 911 SC 3.0. Aluminum
This is a very nice up grade for a mid 70s 911.

andyjboy · 07-15-2006, 09:10 AM

More than likely 930/03 - that would concur with it being a '79 SC engine (aluminium crankcases).

930/05 is a Japanese-spec '79 SC engine (serial number would be 619XXXX).

930/06 is a California-spec version with serial number in the form: 659XXXX

gungadin · 07-15-2006, 01:21 PM

YOO DA Men!
laquer thinner/toothbrush....it is a "3"
Thanks so much for your help.

Wayne 962 · Wayne 962's Garage

I'm a huge fan of 1974-77 cars with an upgraded engine. These cars are so neglected and unwanted by the Porsche community for their 2.7 engine problems, that you rarely see too many these days. Installing a 3.0 solves 95% of the engine problems (replace head studs and install Carrera chain tensioners while you're at it), and really makes these narrow body cars sought after.

-Wayne